Ingredients Review - GlycerSize

GlycerSize (formally known as GlycerPump) is a stable form of 65% glycerol powder which offers enhanced hydration, increased stamina, and full saturated muscles.

Glycerol has been used in sports supplements for a while now, and even though its benefits are tough to question, it always had one issue... turning pre-workout very clumpy… until now.

The patented and superior form of glycerol supplement in GlycerSize gives all the benefits without the irritating clumping of all previous forms of the compound.

Firstly what actually is Glycerol?

Glycerol is a naturally-occurring trihydroxy (three hydroxyl group) sugar alcohol that is an intermediate in carbohydrate and lipid metabolism. It’s also used as a pharmaceutical agent, sweetening agent, emollient, and solvent and can be found in everything from air care products to explosive materials.

You may have heard it be called 1,2,3-Trihydroxypropane, 1,2,3-propanetriol, Glycerin or Glycerine

How does it work?

When consuming Glycerol, it has an increasing effect on aerobic power this is because it accumulates in body fluids, except those found in the eyes and brain, increasing osmotic pressure and the total volume of water in the body.

It can also be used as an energy substrate, and if consumed in large enough quantities, could contribute to the energy yield during training.

When glycerol is consumed it’s rapidly absorbed by the body and distributed between fluid compartments before being metabolised by the liver and kidneys. If it’s consumed along with a hefty amount of fluid, osmotic pressure increases which helps your body retain that large volume of fluid and leads to the expansion of various fluid spaces in the body. This creates a state of being fully hydrated, which is of great benefit to athletes, particularly endurance athletes.

Benefits of Glycerol Supplementation for Athletes?

Most commonly found in pre-workout supplements. It’s been shown to do the following

  • Improves hydration
  • Decreases urine output and free-water clearance
  • Greater endurance
  • Reduces “thermal burden” of exercise in the heat
  • Decreases heart rate during exercise
  • Longer time to exhaustion
  • Improves aerobic and anaerobic power and performance
  • Asteticic improvement through fuller muscles

Besides GlycerSize what other forms of Glycerol are there?

Before GlycerSize there were other forms of glycerol getting used. Here is why you should avoid them and stick with supplements that have GlycerSize.

Glycerol Monostearate

When it first started getting used in sports supplements it was usually in the form of glycerol monostearate (GMS). GMS is composed of glycerol and stearic acid, which only about 25% maximum was glycerol.

Due to high-fat content of GMS it didn’t really dissolve well, often leaving glycerol lumps on the sides of their shakers. Another problem with the high-fat content of GMS is poor stability (due to its hygroscopic nature) and short shelf life. The end result was many forms of GMS in supplements that only contained 5 to 12% glycerol by weight, so as to prevent degradation.


This lead to the creation of the first high-yield form of glycerol called HydroMax. Initially, HydroMax boasted improved stability, increased shelf-life, and a greater amount of glycerol by weight (65%). However, while yielding better performance benefits than GMS it shared its main flaw too much clumping. This led to the development of the latest form of glycerol — one that would ultimately address the annoying clumping and fix the chalky textures that supplements had when dosed with high amounts of HydroMax...

Enter GlycerSize?

GlycerSize, yielding 65% glycerol giving improved stability, increased shelf life, and better taste and texture making it the best form of glycerol on the market.

You will find it in doses of 1-3g but it will inevitably be found at higher does just like Citrulline is now seen in 6-8g per serving.

If you’re interested in trying it out for yourself, check out CSN's GlycerSize+ or one of the listed supplements below

GlycerSize Supplements