Spirulina

Spirulina is one of the oldest supplements on the shelf: rich in proteins and pigments, cultivated in basins then dried. Everything depends on the origin of cultivation and the traceability of controls, and this is what we base our selection on. Tablets to swallow or powder to mix, for a simple daily intake to maintain.

Nutriting nuSpiruline
Nutriting nuSpiruline, high concentration organic spirulina
Nutriting nuSpiruline
NUTRITING

Nutriting nuSpiruline

(0)

23,90 €

Now Foods Spiruline Bio 500 mg
NOW Foods Spiruline Bio 500 mg
NOW Foods Spiruline Bio 500 mg — 200 comprimés
NOW Foods Spiruline Bio 500 mg — 100 comprimés
NOW Foods

Now Foods Spiruline Bio 500 mg

(0)

From 8,05 €

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Is spirulina really an algae?

No. Spirulina is a cyanobacterium, a prokaryotic microorganism of the genus Arthrospira—mainly Arthrospira platensis, often reclassified today in the genus Limnospira. Algae are eukaryotes; spirulina is only called an algae in commercial language. Its dark green color comes from chlorophyll, coupled with a blue pigment, phycocyanin.

It is cultivated in freshwater ponds with high alkalinity, at a pH close to 10, then filtered, dried, and sold as flakes, powder, or compressed into tablets. Drying is a real technical challenge: a too-high temperature degrades pigments and some vitamins. Its cultivation exists in France, including Occitania, alongside imported productions from India, China, or South America. Origin is not a marketing argument: it determines the level of health control.

What does spirulina really contain?

The widely circulated figure—60 to 70% protein—is accurate, but it refers to dry matter. ANSES retains this range, with a proportion of essential amino acids close to 47%: a good profile for a plant product. What this figure doesn't say: no one consumes 100g of spirulina. At a usual intake of 3g, a 65% content represents about 2g of protein, or half a scoop of protein powder. Spirulina is not a protein source: to meet a need, one must turn to plant-based protein powders or food.

Other components are more interesting at real doses. Phycocyanin represents 5 to 15% of dry matter, with a minimum of 5% in USP-type standards—a good indicator of freshness, as this pigment degrades with heat and light. Beta-carotene is present at 1.4 to 1.7 mg per gram, which is considerable and deserves an entire paragraph below. Additionally, it contains minerals, including iron, and B vitamins.

Are the iron and vitamin B12 in spirulina assimilable?

This is the most poorly handled aspect of the product, and one where we prefer to lose a sale rather than say anything incorrect. First, vitamin B12: spirulina contains it, and this is what has made its reputation among vegans. The problem is the form: according to the ANSES evaluation, approximately 80% of this B12 is in the form of pseudo-vitamin B12, an analogue that the human body does not use. These analogues are also counted by certain assay methods, which inflates labels. The agency's conclusion is explicit: spirulina is not a reliable source of vitamin B12. A vegan person must supplement elsewhere, with cyanocobalamin or methylcobalamin—this is the role of B vitamins, not spirulina.

Iron requires the same honesty. Spirulina contains it, that's established. But it is non-heme iron, the plant form, whose intestinal absorption is significantly lower than that of heme iron and highly dependent on the rest of the meal. The widespread claim that "spirulina iron is better absorbed than meat iron" is not based on any solid human data, and ANSES nowhere presents spirulina as a solution to iron deficiency. If this concerns you: a blood test prescribed by your doctor, then appropriate supplementation if justified—our iron section exists for this. Note: vitamin C taken with the same meal improves the absorption of non-heme iron, while tea and coffee reduce it.

How to assess the quality of spirulina?

This is the real question for this product, even before dosage: grown in an open environment, spirulina concentrates what is in its water. Two families of contaminants are documented by ANSES. First, cyanotoxins, primarily microcystins, produced not by spirulina itself but by other cyanobacteria likely to colonize a poorly managed pond: the USP standard sets a threshold of 0.5 mg per kilo of product, and the World Health Organization a tolerable daily intake of 0.04 µg per kilo of body weight. Then, metallic trace elements—lead, mercury, arsenic—with samples exceeding regulatory limits in controls cited by the agency.

ANSES's recommendation is a single sentence: prioritize supply chains best controlled by public authorities, with traceability and identifiable manufacturers. Therefore, avoid marketplaces without an established seller, and prefer a label that indicates the species, cultivation origin, lot number, and party responsible for placing it on the market. Organic certification documents the cultivation method; it alone does not guarantee the absence of microcystins, which requires batch analyses. This requirement applies to the entire superfoods section.

What is blue spirulina?

Blue spirulina is not a variety: it is phycocyanin, extracted and purified from classic spirulina, in the form of powder or liquid of an intense blue widely used as a natural food coloring. Extraction concentrates the pigment but leaves behind proteins, beta-carotene, and minerals: it is not an improved spirulina, it is a different and narrower product. Announced concentrations vary enormously, and a percentage expressed without a specified dosage method does not mean much. From a regulatory perspective, no health claims are permitted in Europe for phycocyanin, any more than for whole spirulina.

What dose to take, and in what form?

Typical doses range from 1 to 5g per day for adults. ANSES considers that spirulina does not appear to present a health risk at low doses, up to a few grams per day for adults, provided there is no contamination. Starting with 1g in the first week then gradually increasing limits initial digestive discomfort.

A ceiling should be explicitly stated, and it is rarely mentioned. Beta-carotene supplied by food supplements is subject to a maximum daily dose of 7 mg in France, due to pro-oxidant effects observed particularly in smokers. With 1.4 to 1.7 mg per gram, 5g of spirulina provides 7 to 8.5 mg of beta-carotene: the limit is reached, or even exceeded. If you smoke, or if you also take a multivitamin containing beta-carotene, stick to low doses.

As for form, tablets are compressed from the same powder, without excipients in the best brands. They solve the only real problem with spirulina: its distinct taste, somewhere between algae and dried mushroom. Count them—at 500 mg each, 3g means six tablets. Powder is cheaper per gram; it can be added to a smoothie or an acidic juice, never to a hot preparation. It's best taken with a meal.

What should not be expected from spirulina, and who should abstain?

First, the framework: no health claims are authorized in Europe for spirulina. What you read elsewhere about immunity, fatigue, or detoxification is commercial argument. It is a concentrated food, not a treatment.

The ANSES nutrivigilance system has analyzed reports associated with these supplements: digestive disorders, allergic angioedema, myositis-type muscle damage, kidney damage. These cases remain few, and imputability was judged probable or very probable for only some of them, but they exist: an unusual reaction justifies stopping the product and seeking medical advice.

ANSES advises against these supplements for individuals with phenylketonuria, as spirulina is rich in phenylalanine, and for individuals with an allergic predisposition. It calls for vigilance in cases of known muscle or liver fragility.

Three other situations require basic prudence and should be decided by a doctor, even without a formal agency position: hemochromatosis and any iron overload; gout and hyperuricemia, as spirulina is rich in nucleic acids and thus purines; and autoimmune diseases, where the hypothesis of immune stimulation, not demonstrated, advises against acting alone. Add pregnancy, breastfeeding, children, and any long-term treatment. In all these cases, the decision belongs to your doctor.

Frequently asked questions

What is spirulina?

A cyanobacterium of the genus Arthrospira, cultivated in alkaline freshwater ponds, then filtered, dried, and sold as powder, flakes, or tablets. Despite its commercial name, it is not an algae in the biological sense. Nutritionally, it is a highly concentrated product: 60 to 70% protein on dry matter, pigments (phycocyanin, chlorophyll), beta-carotene, and minerals. A food, therefore, not a medicine.

What are the benefits of spirulina?

The honest answer begins with a regulatory limit: no health claims are authorized in Europe for spirulina. Not for immunity, fatigue, detoxification, or hair. A seller who promises you any of these is operating outside the legal framework. What can be said without error relates to its composition: it is a nutrient-dense food rich in proteins, pigments, and minerals, which supplements a varied diet without replacing it. Two important nuances, detailed above: its vitamin B12 is not assimilable, and its iron is poorly absorbed.

What vitamins does spirulina contain?

Mainly B vitamins, beta-carotene (a precursor to vitamin A) at 1.4 to 1.7 mg per gram, and moderate amounts of vitamin E. Two details matter more than the list. The B12 displayed on labels is largely unusable by the body—approximately 80% pseudo-vitamin B12 according to ANSES. And beta-carotene, for its part, is so concentrated that 5g of spirulina already reaches the maximum daily dose of 7 mg set in France for food supplements. Spirulina is therefore not a substitute for a multivitamin.

What are the dangers of spirulina?

The main risk does not come from spirulina itself but from its cultivation. Grown in open ponds, it can concentrate microcystins—toxins produced by other cyanobacteria—and heavy metals (lead, mercury, arsenic): ANSES has noted samples exceeding regulatory limits in controls. Hence the only valid precaution: buy a product whose species, origin, lot number, and responsible party for placing it on the market are identifiable. The agency's nutrivigilance has also recorded reports of digestive disorders, allergic angioedema, muscle damage, and kidney damage: few but real. An unusual reaction justifies immediate cessation and medical advice.

Who should not take spirulina?

ANSES advises against it for individuals with phenylketonuria (it is rich in phenylalanine) and for those with an allergic predisposition, and calls for vigilance in cases of known muscle or liver fragility. Three other situations require a doctor's arbitration: hemochromatosis or any iron overload, gout and hyperuricemia (spirulina is rich in purines), and autoimmune diseases. Add pregnancy, breastfeeding, children, and any long-term treatment. When in doubt, consult your doctor before purchasing, not after.

Why take spirulina as a course of treatment?

The motivations we most often hear at the counter are periods of fatigue, vegan diets, and the desire to "densify" a diet poor in vegetables. In all three cases, it's best to know what spirulina can and cannot do. It provides a concentrate of nutrients in a small volume, which is genuinely useful when the diet is monotonous. However, it does not correct neither a B12 deficiency nor an iron deficiency, which are precisely the two reasons why it is wrongly recommended. Persistent fatigue should be investigated with a blood test, not by a course of treatment.

Is it good to take spirulina?

The honest answer begins with the framework: no health claims are authorized in Europe for spirulina, and no one has the right to promise you a benefit. It is a concentrated food, rich in pigments, beta-carotene, and minerals, taken as a supplement to a varied diet. If you are looking to meet a specific iron or vitamin B12 intake, it is not the right product, for the reasons detailed above. And in cases of phenylketonuria, allergic predisposition, or muscle or liver fragility, consult your doctor before purchasing.

What is the daily amount of spirulina?

Typical doses range from 1 to 5g per day for adults. Start with 1g in the first week, then gradually increase: this limits initial digestive discomfort. A ceiling to be aware of: at 1.4-1.7 mg of beta-carotene per gram, 5g of spirulina already reaches the maximum daily dose of 7 mg set in France for supplements. If you smoke or already take a multivitamin containing beta-carotene, stay at the lower end of the range.

How many spirulina tablets per day?

This depends entirely on the weight of the tablet, which should be stated on the label. With 500mg tablets, 3g means six tablets; with 250mg tablets, you need twelve for the same quantity. Always count in grams, never in the number of tablets—this is the most frequent mistake, and one that doubles a dose without realizing it.

How to use spirulina powder?

Dilute it in cold or lukewarm liquid, never in a hot preparation: phycocyanin and beta-carotene degrade with heat. An acidic juice, a smoothie, or a little applesauce can mask the strong taste well. Take it preferably with a meal, starting with 1g in the first week before gradually increasing. A measuring spoon is more reliable than a teaspoon, as the powder's density varies greatly from one brand to another.

Can spirulina be taken all year round?

Both approaches are practiced. A course of six to eight weeks, possibly renewed, remains the most common. Continuous intake at a low dose is also conceivable, with one crucial condition: monitor the cumulative intake of beta-carotene and iron with your other supplements. If you smoke, or if you already take a multivitamin containing beta-carotene, stick to low doses. There is no contraindication to combining it with omega 3 or turmeric at usual doses.

Does spirulina make you gain weight?

No. At 3g per day, it provides about a dozen kilocalories: this is negligible on a daily scale, and weight issues are managed elsewhere. The confusion often comes from weight gain observed during a course of treatment and attributed to the product, when it is due to the rest of the diet. Conversely, spirulina does not cause weight loss either.

Does spirulina help with weight loss?

No, and no claims to that effect are authorized. What affects body composition is caloric deficit and exercise; our weight loss section includes accompanying products without attributing more to them.

Does spirulina affect hair?

This is one of the most frequent searches for this product, and the regulatory answer remains the same: no health claims are authorized in Europe for spirulina, including for hair, skin, or nails. The "hair treatments" you see elsewhere are commercial arguments, not validated data. Persistent or worsening hair loss deserves medical advice and, if necessary, an assessment: it may have a cause that no supplement will resolve.

Is organic spirulina safer?

Organic certification governs the cultivation method and the absence of synthetic inputs. It does not specifically cover microcystins or heavy metals, which depend on the water, site, and batch analyses. A good signal, but not a complete guarantee.

How much does spirulina cost?

The price displayed on a jar means nothing until it's converted to per gram. Two boxes announcing "200 tablets" can contain 100g in one case and 50g in the other, depending on whether the tablet weighs 500 or 250mg. Always calculate based on net weight, then relate it to your daily dose. Powder is always cheaper per gram than tablets, which charge for compression and convenience of use. A price difference between two origins is mainly justified by traceability and the level of control, not by protein content, which varies little.

Where can spirulina be found?

In specialty stores, pharmacies, organic stores, and online, including directly from some French producers. The place of purchase matters less than what the label indicates: identified species, origin of cultivation, lot number, party responsible for placing it on the market. ANSES recommends prioritizing supply chains best controlled by public authorities, which effectively excludes marketplaces where the seller is not identifiable. Our products are available on shelves in Vendargues, ten minutes from Montpellier, and shipped throughout France.

What spirulinas are found in this section?

Our selection criteria are those of ANSES, not marketing: identified species, specified cultivation origin, manufacturer responsible for placing on the market, control documentation. Nutriting offers a high-concentration organic spirulina whose labeling details the origin and dosage per tablet — the level of information we require before referencing a raw material.

If you are building a micronutrition foundation rather than making an isolated purchase, consider vitamin D, magnesium, and probiotics. For athletes, spirulina remains a supplement and not a performance product: our complete guide to sports nutrition puts each family in its place, and the entire catalog starts from the sports nutrition section.

Where to find spirulina near Montpellier?

Our store in Vendargues, about ten minutes from Montpellier, allows you to compare labels in hand: species, cultivation origin, weight per tablet, announced phycocyanin level. This is the kind of product where reading the jar changes the decision. We also ship throughout France and Europe. We will tell you what a product contains and how to take it; we will not tell you if you are iron or B12 deficient — that should be discussed with your doctor.

Sources: ANSES for the risk assessment of spirulina-based supplements, nutrivigilance data, and the maximum dose of beta-carotene; Ciqual for food composition; EFSA for the register of health claims.

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Is spirulina really an algae?

No. Spirulina is a cyanobacterium, a prokaryotic microorganism of the genus Arthrospira—mainly Arthrospira platensis, often reclassified today in the genus Limnospira. Algae are eukaryotes; spirulina is only called an algae in commercial language. Its dark green color comes from chlorophyll, coupled with a blue pigment, phycocyanin.

It is cultivated in freshwater ponds with high alkalinity, at a pH close to 10, then filtered, dried, and sold as flakes, powder, or compressed into tablets. Drying is a real technical challenge: a too-high temperature degrades pigments and some vitamins. Its cultivation exists in France, including Occitania, alongside imported productions from India, China, or South America. Origin is not a marketing argument: it determines the level of health control.

What does spirulina really contain?

The widely circulated figure—60 to 70% protein—is accurate, but it refers to dry matter. ANSES retains this range, with a proportion of essential amino acids close to 47%: a good profile for a plant product. What this figure doesn't say: no one consumes 100g of spirulina. At a usual intake of 3g, a 65% content represents about 2g of protein, or half a scoop of protein powder. Spirulina is not a protein source: to meet a need, one must turn to plant-based protein powders or food.

Other components are more interesting at real doses. Phycocyanin represents 5 to 15% of dry matter, with a minimum of 5% in USP-type standards—a good indicator of freshness, as this pigment degrades with heat and light. Beta-carotene is present at 1.4 to 1.7 mg per gram, which is considerable and deserves an entire paragraph below. Additionally, it contains minerals, including iron, and B vitamins.

Are the iron and vitamin B12 in spirulina assimilable?

This is the most poorly handled aspect of the product, and one where we prefer to lose a sale rather than say anything incorrect. First, vitamin B12: spirulina contains it, and this is what has made its reputation among vegans. The problem is the form: according to the ANSES evaluation, approximately 80% of this B12 is in the form of pseudo-vitamin B12, an analogue that the human body does not use. These analogues are also counted by certain assay methods, which inflates labels. The agency's conclusion is explicit: spirulina is not a reliable source of vitamin B12. A vegan person must supplement elsewhere, with cyanocobalamin or methylcobalamin—this is the role of B vitamins, not spirulina.

Iron requires the same honesty. Spirulina contains it, that's established. But it is non-heme iron, the plant form, whose intestinal absorption is significantly lower than that of heme iron and highly dependent on the rest of the meal. The widespread claim that "spirulina iron is better absorbed than meat iron" is not based on any solid human data, and ANSES nowhere presents spirulina as a solution to iron deficiency. If this concerns you: a blood test prescribed by your doctor, then appropriate supplementation if justified—our iron section exists for this. Note: vitamin C taken with the same meal improves the absorption of non-heme iron, while tea and coffee reduce it.

How to assess the quality of spirulina?

This is the real question for this product, even before dosage: grown in an open environment, spirulina concentrates what is in its water. Two families of contaminants are documented by ANSES. First, cyanotoxins, primarily microcystins, produced not by spirulina itself but by other cyanobacteria likely to colonize a poorly managed pond: the USP standard sets a threshold of 0.5 mg per kilo of product, and the World Health Organization a tolerable daily intake of 0.04 µg per kilo of body weight. Then, metallic trace elements—lead, mercury, arsenic—with samples exceeding regulatory limits in controls cited by the agency.

ANSES's recommendation is a single sentence: prioritize supply chains best controlled by public authorities, with traceability and identifiable manufacturers. Therefore, avoid marketplaces without an established seller, and prefer a label that indicates the species, cultivation origin, lot number, and party responsible for placing it on the market. Organic certification documents the cultivation method; it alone does not guarantee the absence of microcystins, which requires batch analyses. This requirement applies to the entire superfoods section.

What is blue spirulina?

Blue spirulina is not a variety: it is phycocyanin, extracted and purified from classic spirulina, in the form of powder or liquid of an intense blue widely used as a natural food coloring. Extraction concentrates the pigment but leaves behind proteins, beta-carotene, and minerals: it is not an improved spirulina, it is a different and narrower product. Announced concentrations vary enormously, and a percentage expressed without a specified dosage method does not mean much. From a regulatory perspective, no health claims are permitted in Europe for phycocyanin, any more than for whole spirulina.

What dose to take, and in what form?

Typical doses range from 1 to 5g per day for adults. ANSES considers that spirulina does not appear to present a health risk at low doses, up to a few grams per day for adults, provided there is no contamination. Starting with 1g in the first week then gradually increasing limits initial digestive discomfort.

A ceiling should be explicitly stated, and it is rarely mentioned. Beta-carotene supplied by food supplements is subject to a maximum daily dose of 7 mg in France, due to pro-oxidant effects observed particularly in smokers. With 1.4 to 1.7 mg per gram, 5g of spirulina provides 7 to 8.5 mg of beta-carotene: the limit is reached, or even exceeded. If you smoke, or if you also take a multivitamin containing beta-carotene, stick to low doses.

As for form, tablets are compressed from the same powder, without excipients in the best brands. They solve the only real problem with spirulina: its distinct taste, somewhere between algae and dried mushroom. Count them—at 500 mg each, 3g means six tablets. Powder is cheaper per gram; it can be added to a smoothie or an acidic juice, never to a hot preparation. It's best taken with a meal.

What should not be expected from spirulina, and who should abstain?

First, the framework: no health claims are authorized in Europe for spirulina. What you read elsewhere about immunity, fatigue, or detoxification is commercial argument. It is a concentrated food, not a treatment.

The ANSES nutrivigilance system has analyzed reports associated with these supplements: digestive disorders, allergic angioedema, myositis-type muscle damage, kidney damage. These cases remain few, and imputability was judged probable or very probable for only some of them, but they exist: an unusual reaction justifies stopping the product and seeking medical advice.

ANSES advises against these supplements for individuals with phenylketonuria, as spirulina is rich in phenylalanine, and for individuals with an allergic predisposition. It calls for vigilance in cases of known muscle or liver fragility.

Three other situations require basic prudence and should be decided by a doctor, even without a formal agency position: hemochromatosis and any iron overload; gout and hyperuricemia, as spirulina is rich in nucleic acids and thus purines; and autoimmune diseases, where the hypothesis of immune stimulation, not demonstrated, advises against acting alone. Add pregnancy, breastfeeding, children, and any long-term treatment. In all these cases, the decision belongs to your doctor.

Frequently asked questions

What is spirulina?

A cyanobacterium of the genus Arthrospira, cultivated in alkaline freshwater ponds, then filtered, dried, and sold as powder, flakes, or tablets. Despite its commercial name, it is not an algae in the biological sense. Nutritionally, it is a highly concentrated product: 60 to 70% protein on dry matter, pigments (phycocyanin, chlorophyll), beta-carotene, and minerals. A food, therefore, not a medicine.

What are the benefits of spirulina?

The honest answer begins with a regulatory limit: no health claims are authorized in Europe for spirulina. Not for immunity, fatigue, detoxification, or hair. A seller who promises you any of these is operating outside the legal framework. What can be said without error relates to its composition: it is a nutrient-dense food rich in proteins, pigments, and minerals, which supplements a varied diet without replacing it. Two important nuances, detailed above: its vitamin B12 is not assimilable, and its iron is poorly absorbed.

What vitamins does spirulina contain?

Mainly B vitamins, beta-carotene (a precursor to vitamin A) at 1.4 to 1.7 mg per gram, and moderate amounts of vitamin E. Two details matter more than the list. The B12 displayed on labels is largely unusable by the body—approximately 80% pseudo-vitamin B12 according to ANSES. And beta-carotene, for its part, is so concentrated that 5g of spirulina already reaches the maximum daily dose of 7 mg set in France for food supplements. Spirulina is therefore not a substitute for a multivitamin.

What are the dangers of spirulina?

The main risk does not come from spirulina itself but from its cultivation. Grown in open ponds, it can concentrate microcystins—toxins produced by other cyanobacteria—and heavy metals (lead, mercury, arsenic): ANSES has noted samples exceeding regulatory limits in controls. Hence the only valid precaution: buy a product whose species, origin, lot number, and responsible party for placing it on the market are identifiable. The agency's nutrivigilance has also recorded reports of digestive disorders, allergic angioedema, muscle damage, and kidney damage: few but real. An unusual reaction justifies immediate cessation and medical advice.

Who should not take spirulina?

ANSES advises against it for individuals with phenylketonuria (it is rich in phenylalanine) and for those with an allergic predisposition, and calls for vigilance in cases of known muscle or liver fragility. Three other situations require a doctor's arbitration: hemochromatosis or any iron overload, gout and hyperuricemia (spirulina is rich in purines), and autoimmune diseases. Add pregnancy, breastfeeding, children, and any long-term treatment. When in doubt, consult your doctor before purchasing, not after.

Why take spirulina as a course of treatment?

The motivations we most often hear at the counter are periods of fatigue, vegan diets, and the desire to "densify" a diet poor in vegetables. In all three cases, it's best to know what spirulina can and cannot do. It provides a concentrate of nutrients in a small volume, which is genuinely useful when the diet is monotonous. However, it does not correct neither a B12 deficiency nor an iron deficiency, which are precisely the two reasons why it is wrongly recommended. Persistent fatigue should be investigated with a blood test, not by a course of treatment.

Is it good to take spirulina?

The honest answer begins with the framework: no health claims are authorized in Europe for spirulina, and no one has the right to promise you a benefit. It is a concentrated food, rich in pigments, beta-carotene, and minerals, taken as a supplement to a varied diet. If you are looking to meet a specific iron or vitamin B12 intake, it is not the right product, for the reasons detailed above. And in cases of phenylketonuria, allergic predisposition, or muscle or liver fragility, consult your doctor before purchasing.

What is the daily amount of spirulina?

Typical doses range from 1 to 5g per day for adults. Start with 1g in the first week, then gradually increase: this limits initial digestive discomfort. A ceiling to be aware of: at 1.4-1.7 mg of beta-carotene per gram, 5g of spirulina already reaches the maximum daily dose of 7 mg set in France for supplements. If you smoke or already take a multivitamin containing beta-carotene, stay at the lower end of the range.

How many spirulina tablets per day?

This depends entirely on the weight of the tablet, which should be stated on the label. With 500mg tablets, 3g means six tablets; with 250mg tablets, you need twelve for the same quantity. Always count in grams, never in the number of tablets—this is the most frequent mistake, and one that doubles a dose without realizing it.

How to use spirulina powder?

Dilute it in cold or lukewarm liquid, never in a hot preparation: phycocyanin and beta-carotene degrade with heat. An acidic juice, a smoothie, or a little applesauce can mask the strong taste well. Take it preferably with a meal, starting with 1g in the first week before gradually increasing. A measuring spoon is more reliable than a teaspoon, as the powder's density varies greatly from one brand to another.

Can spirulina be taken all year round?

Both approaches are practiced. A course of six to eight weeks, possibly renewed, remains the most common. Continuous intake at a low dose is also conceivable, with one crucial condition: monitor the cumulative intake of beta-carotene and iron with your other supplements. If you smoke, or if you already take a multivitamin containing beta-carotene, stick to low doses. There is no contraindication to combining it with omega 3 or turmeric at usual doses.

Does spirulina make you gain weight?

No. At 3g per day, it provides about a dozen kilocalories: this is negligible on a daily scale, and weight issues are managed elsewhere. The confusion often comes from weight gain observed during a course of treatment and attributed to the product, when it is due to the rest of the diet. Conversely, spirulina does not cause weight loss either.

Does spirulina help with weight loss?

No, and no claims to that effect are authorized. What affects body composition is caloric deficit and exercise; our weight loss section includes accompanying products without attributing more to them.

Does spirulina affect hair?

This is one of the most frequent searches for this product, and the regulatory answer remains the same: no health claims are authorized in Europe for spirulina, including for hair, skin, or nails. The "hair treatments" you see elsewhere are commercial arguments, not validated data. Persistent or worsening hair loss deserves medical advice and, if necessary, an assessment: it may have a cause that no supplement will resolve.

Is organic spirulina safer?

Organic certification governs the cultivation method and the absence of synthetic inputs. It does not specifically cover microcystins or heavy metals, which depend on the water, site, and batch analyses. A good signal, but not a complete guarantee.

How much does spirulina cost?

The price displayed on a jar means nothing until it's converted to per gram. Two boxes announcing "200 tablets" can contain 100g in one case and 50g in the other, depending on whether the tablet weighs 500 or 250mg. Always calculate based on net weight, then relate it to your daily dose. Powder is always cheaper per gram than tablets, which charge for compression and convenience of use. A price difference between two origins is mainly justified by traceability and the level of control, not by protein content, which varies little.

Where can spirulina be found?

In specialty stores, pharmacies, organic stores, and online, including directly from some French producers. The place of purchase matters less than what the label indicates: identified species, origin of cultivation, lot number, party responsible for placing it on the market. ANSES recommends prioritizing supply chains best controlled by public authorities, which effectively excludes marketplaces where the seller is not identifiable. Our products are available on shelves in Vendargues, ten minutes from Montpellier, and shipped throughout France.

What spirulinas are found in this section?

Our selection criteria are those of ANSES, not marketing: identified species, specified cultivation origin, manufacturer responsible for placing on the market, control documentation. Nutriting offers a high-concentration organic spirulina whose labeling details the origin and dosage per tablet — the level of information we require before referencing a raw material.

If you are building a micronutrition foundation rather than making an isolated purchase, consider vitamin D, magnesium, and probiotics. For athletes, spirulina remains a supplement and not a performance product: our complete guide to sports nutrition puts each family in its place, and the entire catalog starts from the sports nutrition section.

Where to find spirulina near Montpellier?

Our store in Vendargues, about ten minutes from Montpellier, allows you to compare labels in hand: species, cultivation origin, weight per tablet, announced phycocyanin level. This is the kind of product where reading the jar changes the decision. We also ship throughout France and Europe. We will tell you what a product contains and how to take it; we will not tell you if you are iron or B12 deficient — that should be discussed with your doctor.

Sources: ANSES for the risk assessment of spirulina-based supplements, nutrivigilance data, and the maximum dose of beta-carotene; Ciqual for food composition; EFSA for the register of health claims.

Sources

À intégrer dans une alimentation variée et équilibrée et un mode de vie sain.

Questions fréquentes — Spirulina

La spiruline, c'est quoi ?

Une cyanobactérie du genre Arthrospira, cultivée en bassins d'eau douce alcaline, puis filtrée, séchée et vendue en poudre, en paillettes ou en comprimés. Malgré son nom commercial, ce n'est pas une algue au sens biologique. Sur le plan alimentaire, c'est un produit très concentré : 60 à 70 % de protéines sur matière sèche, des pigments (phycocyanine, chlorophylle), du bêta-carotène et des minéraux.

Que peut-on dire de la spiruline ?

La réponse commence par une limite réglementaire : aucune allégation de santé n'est autorisée en Europe pour la spiruline. Ce qu'on peut dire tient à sa composition : c'est un aliment très dense en protéines, en pigments — phycocyanine, chlorophylle — en bêta-carotène et en minéraux, qui complète une alimentation variée. Deux précisions importantes, détaillées plus haut : sa vitamine B12 n'est pas assimilable, et son fer est du fer non héminique.

Quelles vitamines contient la spiruline ?

Principalement des vitamines du groupe B, du bêta-carotène (précurseur de la vitamine A) à hauteur de 1,4 à 1,7 mg par gramme, et de la vitamine E en quantité modérée. Deux précisions comptent plus que la liste. La B12 affichée sur les étiquettes n'est pas utilisable par l'organisme dans sa grande majorité — environ 80 % de pseudo-vitamine B12 selon l'ANSES. Et le bêta-carotène est si concentré que 5 g de spiruline atteignent déjà la dose journalière maximale de 7 mg retenue en France pour les compléments alimentaires. Pour une couverture large, nos multivitamines sont faites pour cela.

Quelles précautions connaître ?

Le principal point d'attention ne vient pas de la spiruline elle-même mais de sa culture. Élevée en bassin ouvert, elle peut concentrer des microcystines — des toxines produites par d'autres cyanobactéries — et des métaux lourds (plomb, mercure, arsenic) : l'ANSES a relevé des échantillons hors limites réglementaires dans des contrôles. D'où la précaution essentielle : acheter une référence dont l'espèce, l'origine, le lot et le responsable de mise sur le marché sont identifiables. La nutrivigilance de l'agence a par ailleurs enregistré des signalements de troubles digestifs, d'angio-œdème allergique, d'atteinte musculaire et d'atteinte rénale. Une réaction inhabituelle justifie l'arrêt immédiat et un avis médical.

Qui ne doit pas prendre de spiruline ?

L'ANSES la déconseille aux personnes atteintes de phénylcétonurie (elle est riche en phénylalanine) et aux personnes présentant un terrain allergique, et appelle à la vigilance en cas de fragilité musculaire ou hépatique connue. Trois autres situations demandent l'arbitrage d'un médecin : l'hémochromatose ou toute surcharge en fer, la goutte et l'hyperuricémie (la spiruline est riche en purines), et les maladies auto-immunes. Ajoutez-y la grossesse, l'allaitement, l'enfant et tout traitement au long cours.

Pourquoi faire une cure de spiruline ?

Les motivations que nous entendons le plus souvent au comptoir sont la période de fatigue, le régime végétalien et l'envie de « densifier » une alimentation pauvre en légumes. Elle apporte un concentré de nutriments à faible volume, ce qui a un intérêt réel quand l'assiette est monotone. Deux précisions utiles : elle ne corrige ni une carence en B12, ni une carence en fer, et une fatigue qui dure se documente par un bilan sanguin.

Comment s'intègre-t-elle dans une routine ?

Comme un appoint quotidien à faible volume : un aliment concentré, riche en pigments, en bêta-carotène et en minéraux, qui complète une alimentation variée. Aucune allégation de santé n'étant autorisée en Europe pour la spiruline, nous ne lui prêtons rien de plus. Et en cas de phénylcétonurie, de terrain allergique, de fragilité musculaire ou hépatique, la question se pose à votre médecin avant l'achat.

Quelle quantité de spiruline par jour ?

Les doses usuelles vont de 1 à 5 g par jour chez l'adulte. Commencez à 1 g la première semaine, augmentez ensuite progressivement : c'est ce qui limite les désagréments digestifs du début. Un plafond à connaître : à 1,4-1,7 mg de bêta-carotène par gramme, 5 g de spiruline atteignent déjà la dose journalière maximale de 7 mg retenue en France pour les compléments. Si vous fumez ou si vous prenez déjà une multivitamine contenant du bêta-carotène, restez dans le bas de la fourchette.

Combien de comprimés de spiruline par jour ?

Cela dépend du poids du comprimé, qui doit figurer sur l'étiquette. Avec des comprimés de 500 mg, 3 g font six comprimés ; avec des comprimés de 250 mg, il en faut douze pour la même quantité. Comptez toujours en grammes, jamais en nombre de comprimés.

Comment utiliser la spiruline en poudre ?

Délayez-la dans un liquide froid ou tiède, jamais dans une préparation chaude : la phycocyanine et le bêta-carotène se dégradent à la chaleur. Un jus acidulé, un smoothie ou un fond de compote s'accordent très bien avec son goût, marqué. Prenez-la de préférence au cours d'un repas, en commençant par 1 g la première semaine. Une cuillère doseuse est plus fiable qu'une cuillère à café, la densité de la poudre variant d'une marque à l'autre.

Peut-on prendre de la spiruline toute l'année ?

Les deux schémas se pratiquent. Une cure de six à huit semaines, éventuellement renouvelée, reste le plus courant. Une prise continue à dose basse se conçoit aussi, à une condition comptable : surveiller le cumul de bêta-carotène et de fer avec vos autres compléments. Rien ne s'oppose par ailleurs à l'associer aux oméga 3 ou au curcuma aux doses usuelles.

La spiruline fait-elle grossir ?

Non. À 3 g par jour, elle apporte une douzaine de kilocalories : c'est négligeable à l'échelle d'une journée. C'est donc un complément qui s'intègre sans peser sur le bilan, en sèche comme le reste de l'année.

Quelle place dans un objectif de composition corporelle ?

Aucune allégation n'est autorisée sur le poids. Ce qui agit sur la composition corporelle est le déficit calorique et l'entraînement : notre rayon perte de poids regroupe les produits d'accompagnement de cette démarche.

Que dire de la spiruline et des cheveux ?

C'est l'une des recherches les plus fréquentes sur ce produit, et la réponse réglementaire est la même : aucune allégation de santé n'est autorisée en Europe pour la spiruline, y compris sur les cheveux, la peau ou les ongles. Une chute de cheveux qui dure ou s'accentue mérite un avis médical et, le cas échéant, un bilan.

La spiruline bio est-elle plus sûre ?

La certification biologique encadre le mode de culture et l'absence d'intrants de synthèse. Elle ne porte pas spécifiquement sur les microcystines ni sur les métaux lourds, qui dépendent de l'eau, du site et des analyses sur lot. Un bon signal, à compléter par la traçabilité.

Où trouver de la spiruline ?

En magasin spécialisé, en magasin bio et en ligne, y compris en direct chez certains producteurs français. Le lieu d'achat compte moins que ce que porte l'étiquette : espèce identifiée, origine de culture, numéro de lot, responsable de la mise sur le marché. L'ANSES recommande de privilégier les circuits d'approvisionnement les mieux contrôlés par les pouvoirs publics. Nos références sont en rayon à Vendargues, à dix minutes de Montpellier, et expédiées partout en France.