Peak Performance

Who is Peak Nutrition?

Peak is a European sports nutrition brand published by the company Peak Performance Products S.A., registered in Mertert, Luxembourg, whose main store targets the German-speaking market. The brand claims to have been established in 1999, making it one of the oldest sports supplement brands still active in Europe. In France, it has no distribution in supermarkets and operates exclusively through specialized retailers, of which we are one.

One point needs to be made clear from the outset: several unrelated brands bear a similar name. Peak Performance is also a Swedish outdoor clothing brand, Peak Sport is a Chinese basketball equipment supplier, and Peak Performance Labs is an American supplement brand. The one in question here is the European sports nutrition brand, whose labels simply state PEAK.

What is the Peak range worth?

In its original market, Peak is a generalist brand: protein powders, creatines, boosters, amino acids, micronutrition, and a plant-based range. Its commercial discourse emphasizes internal production rather than influencer marketing, which results in sober and detailed labeling.

What it does well: specialty products, those that mainstream brands do not manufacture because they target a niche audience. Liquid glycerol is one of them, and that's why it's available from us: it fills a specific need that no one else was covering.

What it does less well, from a French perspective: notoriety and availability. The brand's communication is German-speaking, its product sheets are not systematically translated, and supply depends on an import circuit that does not have the regularity of a nationally distributed brand. If you are looking for a complete range to follow all year round, rather look at our proteins and our boosters from more established brands.

What Peak products do we sell?

The Peak selection we stock revolves around Liquid Glycerol, a liquid vegetable glycerin advertised as 99.5% pure, without flavor or filler, to be dosed by the cap. It is a single-ingredient product: there is nothing else in it.

Glycerol is an osmolyte. Ingested with enough water, it distributes itself in the fluid compartments and slows down the renal elimination of this water: the body retains more fluid for a few hours. It is this mechanism, called hyperhydration, which primarily interests endurance athletes involved in long efforts or in hot weather.

Bodybuilders' use of it—seeking a more pronounced pump—derives from the same mechanism, but let's be honest about its status: it's a reasonable extrapolation, not an effect as well-documented as hyperhydration itself. Two practical consequences. Glycerol does not work without water: taken dry, it brings nothing. And it does not replace a pre-workout, as it contains neither caffeine, nor citrulline, nor beta-alanine.

Respect the dose on the label and take it well in advance, with a large amount of water. Reported discomforts—bloating, nausea, headaches—mainly appear when the dose increases too quickly or when water intake is insufficient. Combining electrolytes makes sense if the session is long or the ambient temperature is high.

Our reseller opinion

What works. A bottle of almost pure glycerin is a clear and unsurprising product: a single ingredient line, no proprietary blend, no flavor to endure. For those who know what it's for, it's exactly what you need.

The limit is clear, and we prefer to state it: the Peak selection we stock is very narrow. It's a specialty brand for us, not a range on which to build your supplementation. You won't find Peak protein, Peak creatine, or Peak vitamins here: if you're looking to get everything under one label, this page is not the right entry point, and our deeper ranges will do better.

Two reservations. Liquid glycerol is demanding: viscous, sticky to dose, and it requires drinking a lot—those who don't won't get anything out of it and will wrongly conclude that the product doesn't work. Its interest is also very contextual: relevant in summer, for a long effort or before a high-volume session, dispensable the rest of the time. We do not claim any third-party anti-doping certification for this reference.

Peak or Naughty Boy for pump?

The question deserves to be asked: these are two opposite ways to approach the same goal. Peak's Liquid Glycerol plays on water: a single ingredient, a single mechanism, to combine with what you already take. Naughty Boy's PUMP plays on blood flow: citrulline malate, beta-alanine, arginine, and taurine in a stimulant-free, ready-to-use and flavored formula.

In practice: if you already have a pre-workout that suits you, add glycerol. If you're starting from scratch and want a single powder to mix, choose a complete pump formula from our caffeine-free boosters. The two can be combined without redundancy, which is rarely the case between two pre-workouts.

Frequently Asked Questions

Is Peak a good brand?

Yes, in its niche: it is an old European brand, with sober labeling, which manufactures specialty products that few competitors offer. It is not a brand to follow for its notoriety or the richness of its flavors, and its distribution in France remains confidential.

What exactly is glycerol?

It is a small molecule—a three-carbon alcohol—that forms the backbone of dietary fats and is naturally found in the body. In the form of vegetable glycerin, it has long been used in food and pharmaceuticals. In sports nutrition, it is used for a single property: it is an osmolyte, it attracts and retains water in the fluid compartments. It is neither a stimulant, nor a hormone, nor a vasodilator; it provides no usable energy at the dose at which it is consumed.

What are the side effects of glycerol?

The most common are digestive: bloating, nausea, sometimes loose stools, especially when the dose is taken all at once or too concentrated. Headaches and a feeling of heaviness are also reported. These effects become rarer by gradually increasing the dose and diluting it widely. The real point of vigilance concerns people with kidney or heart disease, hypertension, diuretic treatment, as well as pregnant or breastfeeding women: in these situations, a product whose very principle is to make water retained should be discussed with a doctor, not with a salesperson.

How to take Liquid Glycerol before a session?

Follow the dose on the label, which is authoritative. The principle: take it 60 to 90 minutes before the effort, diluted in a large volume of water—it's the water that does the work, glycerol only retains it. Start with the lowest dose to test your digestive tolerance before using it on an important day. The liquid is thick and sticky: rinse the dosing cap immediately. For a long session or in hot weather, add electrolytes to the drink.

What is their best product?

For us, it's Liquid Glycerol, and it's also the only angle from which the brand interests us today. It's a good product provided you know what to expect from it: hyperhydration, not energy.

Is glycerol allowed in competition?

Glycerol was removed from the World Anti-Doping Agency's prohibited list in 2018, where it was listed in the diuretic and masking agent category. A list changes every year: if you are subject to controls, check the current list with the AFLD, and never rely on a commercial page, including this one.

Does glycerol cause weight gain?

It can make the number on the scale go up for a few hours, since its principle is precisely to retain water. This is neither muscle mass nor fat mass, and it goes away as quickly as it came. Do not use it the day before a weigh-in.

Can it be taken every day?

Nothing justifies it: it is not a cumulative product, its effect is immediate and transient. Reserve it for sessions where it genuinely provides something. In case of medical treatment, kidney or heart problems, ask your doctor's advice before consuming it.

Where to buy Peak in France?

From specialized sports nutrition retailers, both online and in-store: the brand is not present in French supermarkets. We stock it and ship all over France and Europe.

Is it the same brand as Peak Performance jackets?

No, no relation: the Swedish outdoor clothing brand and the European sports nutrition brand are two distinct companies with unfortunately similar names.

Is Peak available near Montpellier?

Yes. Liquid Glycerol is displayed on the shelf in our Vendargues store, about ten minutes from Montpellier. It's the kind of product that's best seen firsthand: the question of dosage and the amount of water to drink can be settled in two minutes at the counter, whereas it can take hours on forums.

Otherwise, the reference can be ordered online and we ship everywhere in France and Europe. You will find it among our sports nutrition products and our new arrivals.

Food supplements are part of a varied and balanced diet and a healthy lifestyle. They do not substitute for medical advice.