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What is Rule One 1Lytes?

Rule One 1Lytes is a sugar-free electrolyte powder to mix with water, from Rule One, an American brand. It is made up at a 5.5 g dose and drunk before, during or after a session that makes you sweat.

The formula works on three levels. Five minerals first: sodium, chloride, potassium, magnesium and calcium, supplied by sodium citrate, potassium chloride, magnesium oxide and calcium phosphate. Then three supporting ingredients — L-citrulline malate, taurine, coconut water powder and watermelon powder. Finally two vitamins, A and C, as retinyl palmitate and ascorbic acid.

The manufacturer offers 1Lytes in 165 g for 30 servings and in 220 g for 40 servings; the net weight is shown on the tub label. The flavours listed here, Blue Raspberry and Lemon Lime. The manufacturer also states that the product is third-party lab tested for banned substances — information we attribute to them, not having seen the reports.

What does one serving of 1Lytes contain?

A 5.5 g serving supplies 300 mg of sodium, 460 mg of chloride, 99 mg of potassium, 60 mg of magnesium and 50 mg of calcium, plus 1,000 mg of taurine, for 10 kcal and 1 g of carbohydrate of which 0 g sugars.

The decisive figure is the first one. Human sweat is essentially a dilute sodium chloride solution: sodium is what you lose, far ahead of everything else. It is also the mineral most consistently under-dosed in consumer products, because it gives a salty taste you do not expect from a flavoured drink. At 300 mg per serving, 1Lytes sits well above the formulas that line up eight minerals at token doses.

* Column calculated from the 5.5 g serving, as the manufacturer publishes no per-100 g values; on a powder dosed by the half-scoop it serves as a comparison benchmark, not as a portion. ** No NRV is established for sodium or for taurine. *** Salt calculated using the regulatory conversion sodium × 2.5. The energy value in kilojoules is not disclosed. Nor are the amounts of citrulline malate, vitamin A and vitamin C: that is a genuine gap in the label and we do not fill the boxes with estimates.

A direct consequence of these gaps: we repeat no claim linked to vitamins A and C, since we cannot verify that they reach the required 15% of the NRV. Magnesium does cross that threshold at 16%: magnesium contributes to electrolyte balance, to normal muscle function and to a reduction of tiredness and fatigue. Calcium and potassium stay below it, so their claims cannot be used here. Sodium has none, and neither does taurine. If what you need is magnesium day to day, our magnesium aisle is far better suited than this powder.

How do you mix and dose 1Lytes?

The manufacturer specifies one 5.5 g scoop in 240 to 350 ml of cold water, shaken and then drunk within two hours of mixing.

Three timings are suggested, with stated intervals: 15 to 30 minutes before training, in small sips every 15 to 20 minutes during the session, and immediately after. How often depends on duration and heat, not on any universal figure. No course length is given and there is no reason to set one: this product is taken according to the session, not continuously.

The manufacturer adds an instruction few brands write down, and it is a good one: on prolonged efforts, alternate with plain water rather than stacking up servings. The risk on long outings is not only drinking too little — it is also loading up needlessly.

Who is 1Lytes for, and who is it not for?

The situations where this powder genuinely earns its place are easy to spot: heat and humidity, sessions running over an hour, the “heavy sweater” profile you recognise from the white marks on your kit, training fasted or on a low-carbohydrate diet, two sessions back to back in one day. For an hour of weight training in a temperate gym, water is enough and the day's food does the rest.

The product contains tree nuts (coconut) — an allergen that the words “coconut water” often make people overlook. It is made in a facility that also handles milk, soya, eggs, tree nuts, peanuts, wheat and crustaceans. The manufacturer advises against it for pregnant and breastfeeding women without medical advice and reminds you not to exceed the stated dose. A concentrated sodium intake calls for particular caution in cases of high blood pressure, kidney failure or diuretic treatment: put the question to your doctor beforehand, not afterwards.

What not to expect from it: this is not a pre-workout, it contains no caffeine and it does not give you energy. Nor is it an endurance drink in the regulatory sense — with 1 g of carbohydrate per serving, the formula does not meet the compositional conditions that would allow a claim about endurance performance or about water absorption. Finally, an electrolyte drink makes up for neither a calorie deficit nor a lack of sleep.

1Lytes or a cyclic dextrin on a long outing?

The two products address different problems, and confusing them costs you sessions.

On a two- or three-hour effort — trail running, cycling, triathlon — what limits you first is glycogen, not sodium. That is where cyclic dextrin is the better choice: it supplies the carbohydrate, it is well tolerated digestively, and sodium and glucose share a common transporter in the gut, so the presence of carbohydrate also speeds up water absorption. Maltodextrin does the same job for less money, with a less comfortable osmolarity.

1Lytes is the better choice when carbohydrate is not the issue: a strength session at 32 degrees, fasted training, a two-session day, a cutting phase with restricted salt. It is also the logical partner to a cyclic dextrin on a long event, since carbohydrate powders are generally low in sodium. Nothing stops you mixing the two in the same bottle. For a simply flavoured drink outside training, look instead at the Bolero sugar-free drinks.

Frequently asked questions

How many servings are there in a tub of 1Lytes?

Thirty 5.5 g servings in the 165 g size, forty in the 220 g size. At one serving per sweaty session, that covers one to two months depending on how you train. The net weight of the item you order is printed on the tub label.

How much water should a serving be mixed with?

From 240 to 350 ml of cold water, depending on the concentration you can tolerate. Diluting towards the upper end softens the salty taste and brings the drink closer to a concentration that sits comfortably in the stomach. Drink it within two hours of mixing.

Is 1Lytes an isotonic drink?

No, and the distinction has practical consequences. An isotonic drink in the regulatory sense combines carbohydrate and electrolytes in defined proportions — from 80 to 350 kcal per litre, of which at least 75% comes from carbohydrate. At 10 kcal per serving, 1Lytes does not fall into that category. It is a mineral powder, not a complete sports drink.

How much potassium does a serving supply?

99 mg, or around 5% of the nutrient reference value, which is 2,000 mg a day. That is not much, and it is consistent: sweat contains far less potassium than sodium, and the day's fruit and vegetables supply a great deal more. Do not count on this powder to cover a potassium requirement.

Can you drink it every day?

That is not what it is for. The logic of the product is to make up for real losses: with no sweaty session there is nothing to make up for, and a normal diet supplies sodium in abundance. Keep it for hot days, long sessions and back-to-back training. On ordinary days, water is enough.

Does it contain caffeine or sugar?

Neither. There is no caffeine in the formula: this is not a pre-workout. And the label shows 0 g of sugars for 1 g of carbohydrate per serving, the sweetener being sucralose. It can therefore be drunk in the evening with no effect on sleep, which is not the case with a booster.

What allergens does 1Lytes contain?

It contains tree nuts, in the form of coconut water powder — a point often missed, because coconut water does not spontaneously suggest an allergen. The production site also handles milk, soya, eggs, peanuts, wheat and crustaceans, hence a risk of traces.

Can it be mixed with a protein or with amino acids?

Yes, with no known interaction. Mixing it with a carbohydrate powder even makes sense on long efforts. With a protein, the acidity of the mix can change the texture depending on the formula used: try it on a half serving before committing a whole bottle. The citrulline in 1Lytes is not quantified, so bear that in mind if you already take some separately.

Where can you buy Rule One 1Lytes?

This page lets you order the flavours, and we ship throughout France and Europe. In the Languedoc climate the question is not a theoretical one: between June and September, the losses on an outing around Montpellier are nothing like those of a session in an air-conditioned gym. In our Vendargues shop, about ten minutes from Montpellier, we compare labels on the only line that really counts, the milligrams of sodium per made-up serving. The rest of the range is in our sports nutrition aisle.

What is Rule One Clear Isolate 689 g?

Rule One Clear Isolate is a clear whey in a 689 g tub, that is to say a whey protein isolate formulated to stay dissolved in an acidic medium and give a translucent, fruity drink rather than a creamy shake. It is made by Rule One, an American brand.

The base is a whey isolate, never a concentrate: only that degree of filtration allows the clarity. The rest of the list is short — natural and artificial flavourings, malic acid and citric acid for the tartness, salt, sucralose and acesulfame potassium as sweeteners, silicon dioxide as an anti-foaming agent, potassium chloride, and blue spirulina as a colouring in the relevant flavours.

The flavours on offer: Blue Raspberry, Cherry Limeade, Peach Mango and Strawberry Lemonade. The register is that of a lemonade, not of a milky dessert. The manufacturer states that its batches undergo third-party laboratory testing for banned substances; we report that information and attribute it to them, not having seen the reports.

What does a serving of Clear Isolate contain?

The reference serving is 25 g. It provides 20 g of protein for 90 kcal (377 kJ), 1 g of carbohydrate, 0 g of fat, 0.3 g of salt and 120 mg of sodium. The 689 g tub covers 27 servings.

Two figures deserve to be looked at together. First the protein density: 20 g of protein in 25 g of powder, that is 80 g per 100 g. Then the size of the serving. Clear wheys are generally dosed at around 20 to 25 g against 30 to 35 g for a conventional whey, because beyond that the drink turns syrupy. This one therefore sits at the top of its category for the amount of protein actually delivered per serving, which is not that common.

* Column calculated from the values declared for 25 g, the manufacturer not publishing a per 100 g column. ** Reference intake of an average adult (8,400 kJ / 2,000 kcal, 50 g of protein, 6 g of salt). Two pieces of data are missing and we are not inventing them: the “of which saturates” line and the “of which sugars” line do not appear in the data supplied by the manufacturer. Nor is the mineral-by-mineral breakdown of the electrolyte complex published: only the sodium is quantified. The values correspond to the Blue Raspberry flavour and may vary slightly from one flavour to another.

The product comfortably exceeds the regulatory threshold allowing the “high protein” nutrition claim — protein accounts for close to 90% of the serving's energy. As for health claims, the authorised wordings are these: protein contributes to a growth in muscle mass, to the maintenance of muscle mass and to the maintenance of normal bones. No recovery claim exists for protein, and we shall not write one.

How do you prepare Rule One Clear Isolate?

The manufacturer specifies a 25 g serving in 350 to 400 ml of ice-cold water, to be shaken vigorously and then left to stand for 30 seconds while the foam subsides. One or two servings a day are enough for most uses; no course length is given, and there is no reason for one with a protein.

The timing: 30 minutes before the session, or immediately after, or at any point in the day to top up an intake. The timing matters less than the total protein over 24 hours — that is the point on which most labels mislead you.

Two instructions apply specifically to this type of product. Do not mix it with milk: the acidity makes the casein flocculate and the drink turns grainy. And do not heat it, do not use it in baking: a clear whey coagulates when cooked. For cooking, keep a whey concentrate.

Who is Clear Isolate for, and who is it not for?

It is aimed first of all at those who can no longer stomach the milky shake format — heaviness on digestion, the taste of vanilla every day, or simply a summer session after which nothing creamy will go down. A protein you do not drink is of no use: that is the soundest use case.

The product contains MILK. It is made in a facility that also handles SOYA, EGG and FISH, and may contain traces of them. In the case of a diagnosed allergy to cow's milk proteins, it is contraindicated: filtration removes the lactose, not the proteins. The manufacturer advises against it for children under 12 and invites pregnant or breastfeeding women, as well as people on medication, to seek advice before use. Any kidney or liver condition is a matter for your doctor.

What not to expect from it: the 300 mg of electrolytes per serving do not make it a sports drink. With 1 g of carbohydrate, the formula meets none of the European conditions that would allow a claim on hydration or on endurance. If that is what you are after, look instead at our electrolytes. Nor does it make you lose weight: it supplies a lot of protein for few calories, which helps you hold a deficit, but it is the deficit that does the work.

Clear Isolate or a conventional whey isolate?

Both rest on the same raw material. The difference lies in the formulation and, above all, in what you will do with it.

A conventional whey isolate is the better choice in three clear cases: you have a high protein requirement to cover and you take two or three servings a day, in which case the price per kilo of protein becomes decisive; you cook with your powder; or you prefer a creamy drink that keeps you going between two meals. On those three points, Clear Isolate loses.

Clear Isolate wins when the drink itself is the problem: milky shakes that are hard to digest, weariness of the milky taste, the urge for a cold, tart drink at the end of a session. It also wins on density, with 20 g of protein in a 25 g serving where many clear wheys stop at 18 g. The calculation that settles it remains the same: price of the tub, divided by its weight in kilos, divided by the protein content per 100 g. Do it on both sides before buying. The protein aisle lets you compare every family.

Frequently asked questions

How many servings does a 689 g tub contain?

Twenty-seven 25 g servings. At one serving a day, that covers almost a month; at two servings on training days only, count on longer. The manufacturer states a shelf life of 24 months in the unopened original packaging, kept away from moisture.

Do the nutritional values change with the flavour?

Slightly. The published figures correspond to the Blue Raspberry flavour, and the manufacturer notes that the others may vary a little. The flavours available are Blue Raspberry, Cherry Limeade, Peach Mango and Strawberry Lemonade. The blue colouring is spirulina, present only in the relevant flavours.

When should Clear Isolate be taken during the day?

Thirty minutes before the session, just after, or at any time to make up a shortfall in intake. The thirty-minute window people talked about fifteen years ago no longer holds: what determines the result is the day's total protein. In practice, take it at the moment you will actually drink it.

Can it be mixed with milk?

No, and that is a manufacturer's instruction, not a preference. The acidity of the formula destabilises the casein in milk: the mixture curdles and turns grainy. Use very cold water, 350 to 400 ml per serving. Crushed ice improves the result further.

Do the 300 mg of electrolytes replace a sports drink?

No. Set against the volume of the preparation, the 120 mg of sodium per serving remain well below the levels that characterise a carbohydrate-electrolyte solution within the meaning of European regulation, and the formula supplies only one gram of carbohydrate. Those minerals improve the drink's profile; they do not turn it into an endurance drink.

Does it contain lactose?

Traces only: this is an isolate, filtered to the point of removing most of the lactose and the fat. Many people troubled by a whey concentrate tolerate it without difficulty. Take care not to confuse this with an allergy to cow's milk proteins, which rules the product out — filtration does not remove the proteins.

How do you avoid the foam?

Pour the water in first, the powder second, shake, then leave it to stand for 30 seconds as the manufacturer indicates. Whey proteins are surface-active and stabilise bubbles: the harder you shake, the longer the foam holds. Taking the metal whisk out of the shaker and diluting generously settles the matter. Made in advance and left to chill, the drink is better.

Where to buy Rule One Clear Isolate 689 g?

This page lets you order the flavours, and we ship throughout France and Europe. With a tart drink, the flavour is the one criterion no product page can replace: in our Vendargues shop, around ten minutes from Montpellier, we talk them through with people who have actually drunk them, and we work out the price per kilo of protein against a conventional isolate in front of you.

If what you are after is instead an amino acid drink to sip during exercise, see our EAA; the whole aisle can be found in our sports nutrition section.

What is Rule One Essential Amino 9?

It is an essential amino acid powder to be mixed with liquid, with a serving of 11.5 g providing 7.5 g of amino acids and 10 kcal. The 345 g tub covers exactly 30 servings. The flavours in the range: Fruit Punch, Blue Razz Lemonade, Peach Mango and Sour Watermelon.

The nine essential amino acids are the ones the body does not make. They are here in free form, that is to say not bound to one another within a protein: this is what distinguishes an EAA from a protein powder, and what explains why it drinks clear and tangy rather than thick.

To this is added a 500 mg electrolyte blend — sodium, potassium, magnesium and calcium — then the formulating ingredients: malic acid, citric acid, natural and artificial flavourings, sucralose, acesulfame potassium, sunflower lecithin and two anti-caking agents. The manufacturer states production in Aurora, Illinois, and third-party laboratory testing for substances banned in competition; we report these statements as it publishes them. The full range can be found in our Rule One section.

What does an 11.5 g serving contain?

One inconsistency in the labelling supplied is worth flagging: the 200 mg of sodium declared would correspond to 0.5 g of salt using the official conversion, whereas the “salt” line states 0.3 g. We reproduce both values as they were communicated to us rather than correcting one of them at random.

The figure everything turns on is 2,500 mg of leucine per serving. Leucine accounts for a third of the blend, which is a straightforward dose for a 7.5 g EAA. Note the scale: 2.5 g of leucine is roughly what a whey serving providing 25 g of protein supplies.

A second reading, the one that separates a good EAA from a disguised BCAA: the other six essential amino acids are genuinely present, right down to the 50 mg of tryptophan. The amounts fall away sharply — 100 mg of histidine, 200 mg of methionine — which reflects the relative requirements of each rather than padding.

A third point, often overlooked: the magnesium at 100 mg, that is 26.7% of the NRV. It is the only component of this formula that exceeds the 15% threshold conferring the right to a regulatory wording, and therefore the only one about which we can say anything: magnesium contributes to electrolyte balance, to normal muscle function and to the reduction of tiredness and fatigue. Potassium (7.5%) and calcium (6.3%) stay below the threshold: nothing can be claimed for them.

For the amino acids themselves, the framework is simple: no health claim is authorised in Europe for free amino acids. Neither recovery, nor protein synthesis, nor anti-catabolism. We describe a composition and a use, not an effect.

How do you take Essential Amino 9?

Dose: 11.5 g, that is one scoop. Liquid: 240 to 360 ml of cold water. Timing: 30 to 45 minutes before the session, or during the effort, or immediately after. Frequency: one serving on training days. Duration: ongoing, with no set course.

Shake vigorously for ten to fifteen seconds in cold water — free amino acids dissolve poorly when hot and the taste suffers for it. The manufacturer specifies that it can be taken on an empty stomach, which is precisely one of the cases where this product makes sense.

On volume, go for the upper end of the range. At 240 ml the drink is concentrated and decidedly tangy; at 360 ml it can be sipped across a whole session and it makes you drink, which is a benefit in its own right when the formula contains 200 mg of sodium.

The manufacturer allows for three windows, and they are not equally useful depending on your situation. Before the session if you train fasted in the morning. During if your session runs beyond the hour. After if your next meal is a long way off. If you ate a full meal two hours earlier, the benefit becomes slight: the amino acids from that meal are still circulating.

The powder combines without difficulty with creatine in the same shaker, or with carbohydrates after the effort. Close the tub properly: free amino acids pick up moisture and clump together, as the manufacturer points out itself.

Who is this EAA for, and who is it not for?

It targets three specific situations: fasted training, long sessions, and days when the next meal is a long way off. It also suits those who cannot face a milky shaker before a workout — a clear drink at 10 kcal weighs on nothing.

The manufacturer does not recommend it for children under 12, and asks pregnant and breastfeeding women as well as anyone on medical treatment to seek professional advice. Traces of MILK, EGGS, SOYA and FISH are possible, as the facility handles these allergens. The formula is declared free from gluten, stimulants and added sugar. Do not exceed 11.5 g a day.

It is less well suited if your objective is to increase your daily protein total: 7.5 g of amino acids does not replace 25 g of complete protein, and costs a great deal more per gram. It also contains sucralose and acesulfame K, as well as artificial flavourings: this is not a neutral powder.

What you should not expect from it, and we are happy to repeat it: if your protein intake is already sufficient, this product will add nothing. An EAA fills a gap in the day; it does not usefully stack on top of three shakers and 180 g of protein. That is the first question to ask yourself, and rarely the one you hear asked on the shop floor.

EAA 9 or BCAA?

This is the comparison that matters, and it is clear-cut.

A BCAA provides only three amino acids: leucine, isoleucine and valine. It costs less per serving, and that is more or less its only advantage. The problem is structural: to build a protein, the body needs all nine essentials; supplying three amounts to delivering three bricks out of nine. It is the better choice only if you already take complete protein in quantity and are simply after an inexpensive workout drink.

Essential Amino 9 supplies the whole profile for a moderate extra cost, with 2.5 g of leucine — that is to say as much as many BCAAs — plus the other six. Add the 500 mg of electrolytes, and you have a complete training drink. In this category, the price gap does not justify choosing an incomplete profile.

One honest nuance to finish: if your main objective is hydration on long sessions or in high heat, the 500 mg of electrolytes in this formula does not replace a dedicated product. Our electrolytes are dosed for that, and cost less per serving.

Frequently asked questions

How many servings are there in the 345 g tub?

Thirty exactly, at 11.5 g per serving. That is a month's supply if you train every day, two months at four sessions a week. The manufacturer states a shelf life of 24 months in the sealed packaging: keep the tub dry, as moisture clumps the amino acids together.

Can it be taken on an empty stomach?

Yes, the manufacturer expressly allows for it, and it is in fact the situation where this product makes the most sense: a morning session without breakfast. At 10 kcal and with no fat, the drink does not sit heavily on the stomach, unlike a protein shake.

What is the difference from a protein powder?

The form and the use. Here, 7.5 g of free amino acids, immediately available, in a clear drink at 10 kcal. A whey supplies 25 g of complete protein for 120 kcal, cheaper per gram, but in a milky shaker that goes down badly mid-session. These are two products for two different moments.

Are the electrolytes enough for a session in high heat?

No. Five hundred milligrams spread across four minerals is a supporting contribution, not a hydration strategy. Only the magnesium, at 100 mg, exceeds the regulatory threshold that allows anything to be said about it. For a long session in the height of summer, take a dedicated electrolyte product.

Why so little tryptophan and histidine?

Because requirements are not the same for all nine amino acids. Tryptophan at 50 mg and histidine at 100 mg reflect requirements markedly lower than those for leucine or lysine. A formula that dosed them all equally would be less well designed, not better.

Which flavour should you choose?

All of them sit in a tangy register. Fruit Punch and Peach Mango are the mildest, Blue Razz Lemonade and Sour Watermelon distinctly sharper — the latter lives up to its name. If you have to drink 360 ml across a whole session, a mild flavour is easier to put up with than a very sharp one.

Does the formula contain a stimulant?

No, the manufacturer declares it free from stimulants: no caffeine, no stimulating extract. That is a useful point if you train in the evening or if you already take a caffeinated pre-workout — the two can then be combined without adding up the stimulants.

Where can you buy Rule One Essential Amino 9?

The flavours can be ordered from this page, and we ship throughout France and Europe. The 345 g tub with 30 servings is an honest trial format: a month is enough to know whether this product has a place in your routine.

At the shop in Vendargues, about ten minutes from Montpellier, this is a category where we often advise against buying before we sell. If you already eat enough protein and you train in the evening after lunch, an EAA will bring you nothing measurable — and it is better to hear that over the counter than after buying. The rest of the amino acids can be compared in our sports nutrition range.

What is Rule One PUMP?

Rule One PUMP is a caffeine-free pre-workout powder, built around a single objective: the muscle pump. It contains no stimulant — no caffeine, no yohimbine, no synephrine — so it is not trying to wake you up. It works on circulation and cell hydration, not on the nervous system.

The formula is fully transparent: every active is listed with its quantity, with no proprietary blend hiding the doses behind an overall total. That is still rare enough in this category to be worth pointing out, and it is the first thing to look at on a pre-workout. Rule One is an American brand whose other products are in our Rule One section.

The flavour offered here is Blue Razz Lemonade. One useful detail: the manufacturer's documents mention an unflavoured version, with no flavouring or sweetener, meant to be added to another product. It is not stocked by us at present — only the flavoured version appears on this page.

What does a serving of Rule One PUMP contain?

Here are the actives declared per scoop, in decreasing order of quantity.

Two pieces of information are missing from what the manufacturer publishes, and we are not going to invent them: the exact weight of the scoop in grams, the number of servings per tub, along with the energy and macronutrient values. The label on the tub you receive is the reference on those points.

3 g of citrulline is a straight dose. Plenty of pre-workouts put citrulline at the top of the list and then include 1 g of it, which achieves very little. Here the quantity matches what is actually used in the performance literature. Note that this is pure citrulline and not citrulline malate: for the same stated quantity, pure citrulline delivers more citrulline, since malate accounts for around 40% of the weight in a 2:1 ratio. If you are comparing with another product, compare like with like — our citrulline section lets you do the maths.

The 2 g of taurine plays a different role: taurine takes part in the osmotic balance of the muscle cell, in other words in how much water it holds. That is the second lever behind the feeling of a pump, and it is also what separates a formula designed for volume from a formula designed for energy. The taurine section offers it on its own for anyone who wants to add it to another base.

Nitrosigine® supplies arginine in a form complexed with inositol and silicon. A word of honesty: 500 mg of an arginine complex is not 500 mg of arginine, and the manufacturer does not publish the exact share. If it is arginine at a straight dose that interests you, take a look at our L-arginine section instead.

Finally, a regulatory point that belongs here and nowhere else on the page: none of these ingredients holds a health claim authorised in Europe. Not citrulline, not arginine, not the plant extracts in the S7 complex. We can describe what they are and what the doses are worth compared with the market; we cannot attribute a health effect to them, and legally nobody can.

Ingredients list

L-citrulline, taurine, Nitrosigine® (inositol-arginine silicate), natural and artificial flavourings, citric acid, S7™ (green tea extract, turmeric extract, garlic extract, blueberry extract, broccoli extract, tart cherry extract, kale extract), whole grape extract, pine bark extract, astragalus extract, panax ginseng extract, AstraGin® (astragalus root extract, panax notoginseng root extract), sweetener (sucralose), food colouring. Made in a facility that handles MILK, EGG, SOYA, WHEAT, PEANUTS, NUTS, FISH and CRUSTACEANS.

How do you take Rule One PUMP?

Serving: one scoop. Liquid: 240 to 350 ml of cold water. Timing: 15 to 20 minutes before the session. Frequency: one serving on each training day, not on rest days. Duration: the manufacturer gives no course length; use follows your training calendar.

For a first tub, start with half a scoop. This is not caution for its own sake: a full dose of citrulline causes digestive discomfort in a minority of users, and it is better to find that out with 1.5 g than with 3 g just before a leg session.

The volume of water matters more than you would think. Below 240 ml the drink is concentrated, sharper on the palate, and the desired effect — drawing water into the muscle — has less raw material to work with. If you train in a hot gym, go up to 400 or 500 ml without hesitation.

There are two ways to use it. On its own, it is a late-session pre-workout: no stimulant, so no impact on falling asleep, which makes it one of the few products in this category you can use at 21:00. As an add-on, a scoop goes into your usual pre-workout to reinforce the pump side without adding a single milligram to the total caffeine. That is the most common use among our customers who train in the morning.

Who is Rule One PUMP for, and who is it not for?

It suits anyone who trains in the evening and does not want to sacrifice their sleep, anyone already at saturation point with caffeine during the day, and anyone looking for the sensation of a pump rather than a kick. It also suits those who build their own pre-workout by stacking separately dosed components.

The product is for adults only. It is not recommended for pregnant or breastfeeding women, and calls for advice from a healthcare professional if you have a condition or are on medication — the question is worth asking if you take anything acting on blood pressure, since the mechanisms involved concern vascular tone.

It is not for you if you are looking for energy: with no caffeine, it wakes nobody up. A lot of disappointed feedback comes from that, from a purchase made without reading the label. Nor is it for people allergic to the major allergens, since production is shared with milk, egg, soya, wheat, peanuts, nuts, fish and crustaceans.

What you should not expect from it: the pump is a transient phenomenon, not progress. It makes the session more enjoyable and the mirror more flattering for an hour; it does not build muscle by itself. If your training and your diet do not follow, no product in this category will make up for it. And if you feel nothing, that is not abnormal: the response to citrulline varies a great deal from one person to another.

Rule One PUMP or a pre-workout with caffeine?

That is the real trade-off, and it depends on what time you train.

A conventional pre-workout combines caffeine, beta-alanine and often citrulline. It acts on alertness, perceived pain and aggression under the bar. It is the better choice for a morning session, for heavy training where focus is the limiting factor, or when you are tired and the session risks being rushed. Its downside is mechanical: caffeine has a half-life of five to six hours, which writes off part of your sleep when you train after 18:00.

Rule One PUMP does not do that job and does not claim to. Its ground is the end-of-day session, the volume session where you are chasing sensation rather than heavy loads, and the period when you want a break from stimulants without losing the habit of the pre-session ritual. It also has the advantage of stacking: nothing stops you adding it to a pre-workout on days when you want both.

If you are still hesitating, there is a third family: creatine-free pre-workouts, for those who already take their creatine separately and do not want to see it come back in the pre-workout.

Frequently asked questions

Does Rule One PUMP contain caffeine?

No, none at all. That is the whole point of it: the entire formula is built without stimulants, which means you can use it in the evening with no consequences for falling asleep. It is also why you do not “feel” anything come on within ten minutes, unlike a caffeinated pre-workout.

Can you mix it with your usual pre-workout?

Yes, and it is a common use. A scoop added to your pre-workout reinforces the pump side without adding caffeine. Just check that your pre-workout does not already contain 6 g of citrulline, in which case the total would go beyond what is of any use.

How long before training should you take it?

15 to 20 minutes. That is shorter than for a caffeinated pre-workout, which needs more like 30 to 45 minutes. Citrulline acts quickly, and waiting an hour tends to lose the benefit rather than reinforce it.

What is the difference between citrulline and citrulline malate?

Citrulline malate is citrulline bound to malic acid. In a 2:1 ratio, around 60% of the stated weight is citrulline and the rest is malate. The 3 g of pure citrulline in this product therefore equates to around 5 g of citrulline malate. That is the calculation to do before comparing two labels.

Does the product cause water retention?

It draws water into the muscle cell, which is the desired effect, and not under the skin, which would be the unwanted one. The difference comes down to sodium and not to the actives in this formula. In practice, you should not see your weight climb or your face puff up.

Can you take it on rest days?

There is no point. Unlike creatine, whose benefit depends on muscle saturation built up over time, the actives in this product act when you take them and no further. A tub therefore lasts longer than you might think.

Does S7 really do anything?

There is no way to say so. 50 mg of a blend of seven plant extracts amounts to a few milligrams of each, and the manufacturer does not publish the breakdown. It is a patented ingredient with a proprietary dossier, not an active dosed at the level you would find in a study. The two ingredients that genuinely carry this formula remain citrulline and taurine.

Where can you buy Rule One PUMP?

It can be ordered from this page, and we ship throughout France and Europe. At the Vendargues shop, about ten minutes from Montpellier, this is the product we reach for when someone comes in and tells us they have not been sleeping since they went back to the gym in the evening: nine times out of ten the cause is in their pre-workout, and switching to a stimulant-free formula sorts it out within a week. The rest of the pre-workout section can be browsed in our sports nutrition range.