Description of PROTEINI.SI 100% PURE GLUTAMINE
Short summary
Proteini.si 100% Pure Glutamine is a dietary supplement with a high proportion of pure L-glutamine. It is intended primarily for athletes and active individuals during periods of more intense training, when they want to support post-workout recovery and maintain good physical fitness. Due to its neutral taste, it can easily be added to other drinks.
6.2 / 10Our expert rating
Ingredient quality7.0
Formula transparency10.0
Effectiveness1.8
Safety10.0
Independent testing1.0
How to use
Mix 1 scoop (5 g) in a glass of water or another beverage. It is recommended to take 1 dose 2-3 times daily - for example before breakfast, after training and before bed, which can amount to up to 15 g daily. The exact timing of intake is not crucial; what matters more is reaching your total daily target, which is in line with the doses used in research (approximately 5-10 g/day).
Pros and Cons
100% pure L-glutamine with no added flavors, sweeteners or fillers
5 g of glutamine per dose, which is in line with the doses used in research
Among the most favorable prices per gram in this product category
Suitable for vegans and vegetarians
Contains exclusively glutamine, so it does not provide additional amino acids, electrolytes or other ingredients for comprehensive post-workout support
Being unflavored, the taste may be less pleasant for users who prefer flavored drinks
Scientific evidence for a significant effect on muscle strength or body composition in healthy, resistance-trained adults is relatively weak (Candow et al., 2001)
No independent laboratory batch-testing report is published on the product page
Suitable for
Individuals with intensive strength training
Endurance athletes (running, cycling, triathlon) during periods of high training volume
Athletes in the recovery phase after demanding workouts
Vegans and vegetarians
Realistically, not to the extent that marketing often promises. Well-controlled clinical studies in healthy, resistance-trained adults have not confirmed a significant effect of oral glutamine supplementation on muscle strength, body composition or muscle protein breakdown (Candow et al., 2001). It makes more sense to think of glutamine as support for recovery, the digestive lining and the immune system during periods of high training load, rather than as a direct muscle-building agent. For that, sufficient protein intake, a caloric surplus and properly planned resistance training are key.
Yes, that's exactly why the product has no flavors or sweeteners - so you can freely combine it with other drinks, such as a protein shake, juice or plain water, without affecting the taste of your chosen combination. A neutral formula also means you're not introducing additional sweeteners or artificial flavors into your body, which is an advantage if you want as clean a composition as possible. The downside is that on its own in water the taste can be slightly bitter or neutral, so most users prefer to mix it with more flavorful drinks.
The instructions suggest 1 dose (5 g) up to 2-3 times daily, which amounts to roughly 10-15 g of glutamine per day - this is in line with the doses used in research (approximately 0.1-0.3 g/kg of body weight per day). Studies show that even acute doses of up to approximately 0.65 g/kg of body weight were well tolerated without raising plasma ammonia in healthy individuals (Gleeson, 2008), but we still recommend sticking to the daily dose stated on the label and not exceeding it without consulting a professional, especially if you have any chronic condition.
In healthy adults, glutamine is generally considered safe at the doses used in research, but long-term safety (beyond a few months of continuous use) in healthy people has not been well studied (Holeček, 2013). Possible milder side effects include fatigue, muscle pain, headache or digestive issues. People with liver impairment (e.g. cirrhosis) should consult a doctor before use, as glutamine can worsen hepatic encephalopathy in this condition. For long-term use, we recommend taking breaks and, if needed, consulting a doctor or pharmacist about your personal situation.
May contain traces of milk, eggs, gluten-containing cereals, soy, peanuts, tree nuts, fish and crustaceans.
Do not exceed the stated recommended daily dose
People with liver impairment (e.g. cirrhosis) or other chronic conditions should consult a doctor before use
Pregnant and breastfeeding women should consult a doctor before use, as there is insufficient safety data for these periods
Ingredients
L-glutamine.
Form:Powder
Dose:1 scoop (5 g)
Available flavors:Unflavored
L-glutamine:5 g
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