Rule One 1Lytes

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.