Peak Performance Liquid Glycerol - Liquid Glycerol for Hyperhydration & Muscle Pump

What is Peak Performance Liquid Glycerol?

Peak Performance Liquid Glycerol is a bottle of pharmaceutical-grade liquid glycerine, standardised to 99.5%. A 5 ml dose provides 6,000 mg of glycerine and 5 kcal. It is a single-ingredient product, with no flavouring, no sweetener and no additives.

Glycerine, or glycerol, is a three-carbon molecule that the body produces itself when breaking down fat. Its particular property is osmotic: it distributes itself through the body's fluid compartments and holds water there. That mechanism, and that alone, explains its use in sports nutrition.

The liquid format is a deliberate choice. Powdered glycerol is in fact glycerol adsorbed onto a carrier, which divides the actual content by two or three and makes it highly sensitive to moisture — the tubs set into a solid block. Here the product is already in its natural form, and it is measured out with the cap. The rest of the range is in our Peak Performance Nutrition aisle.

What does a 5 ml dose contain?

The manufacturer notes that these values are averages, subject to the normal variations of the product. The volume of the bottle is not published in the information available to us; the packaging carries it.

6 g of glycerine per dose is the benchmark dose for this category, and it matches the quantities used in the published protocols on hyperhydration. Plenty of competing products announce as much but in powder form at 65%: for the same stated quantity, they deliver considerably less. That is the calculation to make before comparing two labels.

The second notable point is the absolute brevity of the list: glycerine, and nothing else. No flavouring, no sweetener, no bulking agent. In an aisle where fifteen-line lists are the norm, this is a product you can read in one second.

The regulatory framework does, however, need stating clearly, because this product is often sold with promises that nothing supports. No health claim is authorised in Europe for glycerol. Not on the pump, not on endurance, not on thermoregulation, not on performance. The osmotic mechanism is real and documented; the effect on sports performance, on the other hand, has no validated dossier. We can describe what the molecule is and at what dose it is present; we cannot promise you anything, and the previous description on this page went too far on that point.

Finally, a detail that is useful to competing athletes: the status of glycerol under anti-doping rules has changed over the years. If you are subject to testing, check the status of the substance and of the batch with your federation before taking any. It is a check that takes five minutes and it is yours to make.

Ingredients list

Glycerine 99.5% (pharmaceutical grade). Made in a facility that handles MILK, SOYA, GLUTEN and EGG.

How do you take Liquid Glycerol?

Dose: 5 ml, i.e. one serving. Liquid: 300 ml of water as a minimum. Timing: 30 to 60 minutes before the session. Frequency: one serving a day. Duration: no set course length; to be used within three months of opening.

Water is not an option here, it is the product. Glycerol does not create water: it holds on to the water you drink. A dose swallowed neat, with nothing to drink afterwards, is of absolutely no use and causes digestive discomfort into the bargain. The 300 ml are an absolute minimum, and the manufacturer recommends continuing to drink plenty during the session.

The 30 to 60 minute window corresponds to the time needed for the glycerine to distribute itself through the body. Taken five minutes before, it has done nothing; taken two hours before, most of it has already been eliminated.

For a first try, start with half the dose. Glycerol has a laxative effect in some users, and it is better to find that out with 2.5 ml on a Sunday than with 6 g just before an important session. The taste is distinctly sweet and a little syrupy: diluted in 300 ml, it remains perfectly acceptable.

Nothing prevents you from adding the dose to your usual pre-workout, and that is in fact the most common use. As the product is neutral in terms of actives, it doubles up on no ingredient — unlike what happens when you stack two complete pre-workouts.

Who is Liquid Glycerol for, and who is it not for?

It suits someone who trains in the heat, who strings together long sessions, or who is specifically after the sensation of a pump during effort. It also suits those who build their own pre-workout brick by brick and want an isolated ingredient, with no flavouring and no sweetener.

The manufacturer states that it should not be used by pregnant or breastfeeding women, and flags a possible laxative effect in the event of excessive consumption. It insists on one point that is not negotiable: the product must always be consumed with a sufficient quantity of water.

It is not for you if you have a sensitive stomach during effort: glycerine draws water into the intestine, and at a full dose with little water, the session can go badly. Nor is it for you if you have to watch your weight day by day — a weight-category sport, for instance — since the intended effect is precisely additional water retention.

It is made in a facility that handles milk, soya, gluten and egg: in the event of a severe allergy, that point alone rules it out.

What you should not expect from it: a pump is not muscle building. It makes the session more enjoyable and the mirror more flattering for an hour, it does not make you progress. Nor does glycerol replace proper day-to-day hydration: if you drink a litre a day, that is where to start, and it costs nothing.

Liquid Glycerol or a citrulline pre-workout?

Both are aimed at the pump, through two completely different mechanisms.

A product based on citrulline acts on vascular tone: citrulline is a precursor of arginine, which is itself involved in the production of nitric oxide. The pump obtained comes from a rush of blood. It is the better choice if you are after the classic pump sensation, with doses of 3 to 8 g per serving, and it combines with L-arginine for those who want to go further.

Glycerol acts elsewhere: it dilates nothing, it holds water in the fluid compartments. The result is greater volume, a feeling of fullness, and better heat tolerance thanks to the plasma volume. It is the better choice if you train in summer, if sessions run long, or if citrulline does nothing for you — which happens.

The two are complementary rather than competing: nothing prevents you from combining them, since they do not act on the same lever. If you prefer a ready-made stimulant-free formula, the caffeine-free pre-workouts bring together products of that kind.

Frequently asked questions

How much glycerine per dose?

6,000 mg for 5 ml, at a standardisation of 99.5%. That is the dose used in the published protocols on hyperhydration. Watch out when comparing: the powdered versions are glycerol adsorbed onto a carrier, generally around 65%, which changes the calculation completely.

How much water should it be taken with?

300 ml as a minimum, and more if you can manage it. It is the most important rule with this product: glycerol does not create water, it holds on to the water you drink. A dose taken with nothing to drink is of no use and causes digestive discomfort.

How long before the session?

30 to 60 minutes. That is the time needed for the glycerine to distribute itself through the body's fluid compartments. Taken just before the warm-up, it has not yet worked; taken two hours before, most of it has already been eliminated.

Is there a laxative effect?

In some people, yes, especially at a full dose and with little water. Glycerol draws water into the intestine, exactly as polyols do. Start with half a dose and increase if all goes well: that is the only way to assess your tolerance without ruining a session.

Does the product cause weight gain?

On the scales, yes, temporarily: it is retained water, and that is the intended effect. It is neither fat mass nor muscle mass, and it disappears within a few hours. If you have to make weight in competition, this product is not your friend.

Can it be mixed into your pre-workout?

Yes, and that is the most frequent use. As the product contains only one ingredient, it doubles up on no active in your usual pre-workout. Simply add the dose to the shaker and increase the volume of water accordingly.

What do the anti-doping rules say?

The status of glycerol has changed over the years in the lists of controlled substances. If you are subject to testing, check the substance and the batch with your federation before taking any. We cannot settle that question on your behalf, and it is worth five minutes of checking.

Where to buy Peak Performance Liquid Glycerol?

The bottle can be ordered from this page, and we ship throughout France and Europe. At the Vendargues shop, about ten minutes from Montpellier, this is a product we mostly talk about in summer: between June and September, when you are training in thirty-degree heat, the question of plasma volume stops being theoretical. The rest of the pre-session aisle can be browsed in our sports nutrition section.