Glutamine
We’ve got a wide range of cutting-edge glutamine supplements in both powder and capsule form — the amino acid that naturally occurs in protein, and forms the building blocks of all-important new muscle in the body. A must whatever your training goals.
Glutamine can be found naturally in most meat, fish, and eggs, which also makes our range of supplements an excellent alternative for vegans and vegetarians.
Want to find out more? Check out our best amino acids page.
Shop Glutamine at Myprotein
Glutamine is the most abundant amino acid found in the body, making up a significant proportion of the free amino acid pool in muscle tissue. It's a conditionally essential amino acid — meaning the body can produce it, but demand can outstrip supply during periods of intense physical activity. That's why glutamine supplements are a staple in the stacks of serious athletes and everyday gym-goers alike.
The glutamine range includes both powder and tablet formats, giving you the flexibility to fit supplementation around your routine. Whether you prefer mixing l-glutamine powder into a shake or reaching for a convenient tablet, there's an option that works for your lifestyle.
Who Glutamine Are For
Glutamine is a go-to for anyone who trains consistently and wants to keep their amino acid intake topped up. It's particularly popular with weightlifters, bodybuilders, and endurance athletes who push their bodies hard and want a pure, straightforward l-glutamine supplement in their corner. Because it's unflavoured in powder form, it stacks easily with other supplements — protein shakes, pre-workouts, and intra-workout drinks all work well.
It's also a smart choice for those who follow high-protein training diets and want to ensure their amino acid profile stays complete. If you're tracking your nutrition carefully and want to know exactly what's going in, glutamine's simplicity — no fillers, no unnecessary extras — makes it easy to account for.
When to Use Glutamine
The most common time to take glutamine is around training. Many athletes take it immediately after a session, mixing l-glutamine powder into their post-workout shake alongside a protein source. This makes practical sense given that protein contributes to the growth and maintenance of muscle mass1, and pairing amino acids together is a well-established habit in the fitness community.
Some people also take glutamine first thing in the morning or before bed — both are common practices for those who want to maintain consistent amino acid levels throughout the day. L-Glutamine Tablets make the before-bed option particularly easy, requiring no mixing or preparation.
Glutamine Benefits
The Most Abundant Amino Acid
Glutamine is the most abundant free amino acid in the body, particularly in skeletal muscle. During intense exercise, levels in muscle tissue can drop significantly, which is why many athletes choose to supplement. Having a reliable glutamine supplement means your amino acid intake doesn't depend entirely on what's already in your body.
Versatile Across All Training Goals
Whether you're focused on building size, improving endurance, or maintaining an active lifestyle, glutamine fits neatly into any supplement routine. It's one of the most widely used amino acids precisely because it's relevant to so many different training styles and goals — not just one specific discipline.
Two Formats to Suit Your Routine
L Glutamine Powder can be stirred into any drink and is ideal for those who already mix post-workout shakes. L-Glutamine Tablets offer the same pure ingredient in a grab-and-go format — no shaker required. Both deliver the same quality amino acid; it's purely a matter of how you prefer to take your supplements.
Pure and Simple Formulation
The glutamine range keeps things clean. No unnecessary additives, no proprietary blends — just pure l-glutamine in whichever format suits you. That makes it straightforward to combine with other supplements and easy to track as part of a structured nutrition plan.
Popular Picks
L-Glutamine Tablets — A tablet-format amino acid that pairs with protein to support muscle building and repair, making it a versatile pick whatever sport or training goal you're working towards.
L Glutamine Powder — The most popular amino acid in powder form, built for every sport and workout goal, and fully suitable for vegans and vegetarians.
FAQs
What is glutamine?
Glutamine is the most abundant amino acid in the human body, found in particularly high concentrations in muscle tissue. It's classified as a conditionally essential amino acid — the body produces it naturally, but physical demand can exceed what the body makes on its own. Glutamine supplements provide a concentrated, convenient source of this amino acid in either powder or tablet form.
What is l-glutamine?
L-glutamine is the biologically active form of glutamine — the specific isomer the body uses. When you see "l-glutamine" on a supplement label, it refers to this usable form of the amino acid, as opposed to d-glutamine, which the body doesn't utilise in the same way. All glutamine supplements in this range use l-glutamine as the active ingredient.
What's the difference between glutamine powder and glutamine tablets?
Both formats deliver the same pure l-glutamine — the difference is purely practical. L Glutamine Powder is the most popular choice and mixes easily into shakes, water, or other drinks, making it ideal for those who already have a post-workout shake routine. L-Glutamine Tablets are pre-measured and portable, so there's no mixing involved — just take them as needed. Your lifestyle and preference should guide the choice.
How do I take glutamine powder?
Glutamine powder is typically mixed into water, a protein shake, or another drink. Because it's unflavoured, it doesn't alter the taste of whatever you're mixing it into, which makes it easy to stack with other supplements. Many people take it as part of their post-workout routine, though it can also be taken at other points in the day to maintain consistent amino acid intake.
Can glutamine be taken alongside protein supplements?
Glutamine and protein supplements are commonly taken together and stack naturally. Many athletes mix l-glutamine powder directly into their post-workout protein shake, since protein contributes to the growth and maintenance of muscle mass1 and both amino acids integrate seamlessly into the same drink. There's no conflict between them — they simply form part of a broader amino acid and protein intake strategy.
Is glutamine suitable for all sports and training goals?
Glutamine is one of the most versatile amino acid supplements available, used across weightlifting, bodybuilding, endurance sports, and general fitness training. It doesn't target a single type of performance — its relevance to the body's amino acid pool makes it applicable to a wide range of athletic pursuits. Both powder and tablet formats suit all training goals equally.
Who developed the glutamine supplements at Myprotein?
Myprotein's glutamine supplements are developed by Myprotein's expert nutritionists. The formulations are kept deliberately straightforward — pure l-glutamine with no unnecessary extras — reflecting the team's focus on clean, effective supplementation that athletes can trust and track as part of a structured nutrition plan.
Which glutamine supplement is best for beginners?
L Glutamine Powder is the most popular option and a natural starting point for anyone new to glutamine supplementation. It's versatile, easy to dose, and blends smoothly into existing shake routines. If you'd rather skip the mixing altogether, L-Glutamine Tablets are just as straightforward — they're pre-measured and require nothing more than water to take.
Is glutamine a complete protein?
Glutamine is a single amino acid, not a complete protein. Complete proteins contain all nine essential amino acids in sufficient quantities — sources like whey protein or food proteins such as eggs and chicken fit that description. Glutamine supplements are best understood as a targeted amino acid addition to your diet, typically used alongside a broader protein intake rather than as a standalone protein source.
How many glutamine supplements are available at Myprotein?
There are two glutamine supplements available: L Glutamine Powder and L-Glutamine Tablets. Both contain the same pure l-glutamine amino acid — the range is intentionally focused, giving you a straightforward choice based on the format that works best for your routine rather than a complicated line-up of variants.
1. Protein contributes to the growth and maintenance of muscle mass.