Product Overview
Rule One (R1) Glutamine is unflavoured L-glutamine powder, labelled for workout recovery support. The supplement facts panel in the product photos gives a serving of about one scoop (5.3g), providing 5g of L-glutamine and 20 calories, with 75 servings per tub. Other ingredients: none.
Manufactured for and distributed by Rule One Proteins, LLC of Downers Grove, Illinois, USA. The label states it is made in the USA from globally sourced ingredients, in an FDA-inspected, GMP-compliant, banned-substance-tested facility.
A Note on the Pack Weight
The listing title says 375g. The tub in the photos reads net weight 14.04oz (398g), with a 5.3g scoop. Either way, the label promise is the same: 75 servings of 5g of glutamine. Message us if you want the weight printed on the tub we hold.
Key Benefits
- Pure glutamine — one ingredient, nothing added and no flavour, so it drops into a protein shake or any drink without changing the taste.
- Micronised — finely milled to mix easily into liquid.
- Conditionally essential — glutamine is the most abundant amino acid in the body. The body normally makes enough, but during severe stress, illness or intense physical demand it may need more than it produces, as the label notes.
- Recovery — some studies suggest glutamine may reduce muscle soreness after intense exercise. Plausible, modest.
What the Listing Claims, and What Is Known
- “Aids in muscle repair” and “supports recovery time” — glutamine takes part in protein synthesis and nitrogen balance. But in healthy people who eat enough protein, studies have not shown that extra glutamine adds muscle, strength or performance. A protein-rich diet already supplies plenty.
- “Fast absorption” — free amino acids are absorbed quickly, but much of the glutamine you swallow is used by the gut itself before it reaches the muscles.
- Its clearest uses are clinical — in people who are seriously ill or injured — and that is a doctor’s decision.
Key Features
- 5g L-glutamine per scoop (5.3g serving)
- 75 servings; unflavoured
- No other ingredients
- Micronised for easy mixing
- Made in the USA in a banned-substance-tested facility, as stated on the label
Ingredients / Specifications
Per scoop (supplement facts panel in the product photos): calories 20; L-glutamine 5g. Serving size about one scoop (5.3g); 75 servings per container.
Other ingredients: none. Net weight on the tub in the photos: 14.04oz (398g). The label notes that the product is sold by weight, not volume, and settles during shipping.
How to Use
- Mix one scoop with 8 to 12oz (about 240 to 350ml) of any cold drink or liquid workout supplement, as the label directs.
- Take it during or after workouts, alongside a balanced diet and regular exercise.
- One scoop a day is the label serving; do not exceed it.
- Keep the tub tightly closed — glutamine powder clumps in Dhaka humidity.
Who Is It Suitable For?
Healthy, active adults who train hard and want to try glutamine for recovery. The label says it is for healthy active adults only.
- Not for under-18s, or for women who are pregnant, trying to get pregnant or breastfeeding — per the label.
- Talk to a doctor first if you have liver disease, kidney disease or a seizure disorder, where extra glutamine may not be appropriate, or if you take any medication — including anti-seizure medicines.
How It Differs From NOW Foods L-Glutamine Capsules
We also sell NOW Foods L-Glutamine 500mg capsules. One scoop of this powder gives 5g — the same as ten of those capsules — so the powder is the practical choice if you want gram doses.
Why Choose Rule One L-Glutamine?
A pure, unflavoured, single-ingredient powder with a clear 5g serving and a transparent label, from a sports-nutrition maker that states banned-substance testing — useful if you compete in a tested sport.
This Is a Supplement, Not a Medicine
A dietary supplement is a food product. It is not a medicine, it has not been through the testing a medicine goes through, and it does not diagnose, treat, cure or prevent any disease.
Supplement labels use health language — “supports”, “helps maintain”, “promotes” — precisely because they are not permitted to claim treatment. Read them that way. If a listing anywhere promises that a capsule will fix a medical condition, that promise is not one the product can keep.
What a supplement can honestly do is fill a gap in your diet. That is worth something, and it is a smaller thing than most packaging implies.
Talk to a Doctor First
Speak to a doctor or pharmacist before you start, particularly if you:
- take any prescribed medicine — supplements interfere with medicines more often than people expect
- are being treated for a heart, liver, kidney, thyroid or blood condition
- have diabetes
- are pregnant, trying to conceive, or breastfeeding
- have surgery or a dental procedure coming up
Never stop or reduce a prescribed medicine in order to take a supplement instead. That is the single most dangerous thing anyone does with a product like this, and it is what the marketing language quietly invites.
About the Imported Pack
This is an imported product. The label, the dose instructions and the ingredient panel are the ones printed for the market it was made for, and the wording may differ from a locally packaged version.
Follow the dose printed on the pack itself — it is the authority on its own contents — and check the expiry date when it arrives. If anything on the label is unclear, message us before you take it and we will read it to you.
Storage
- Keep the container tightly closed, somewhere cool and dry, out of direct sunlight.
- Do not store it in a bathroom. Heat and humidity break supplements down faster than anything else, and a Dhaka bathroom is the worst place in the house for them.
- Leave the desiccant sachet in the bottle. It is there to keep moisture out, not by mistake.
- Softgels and fish oils are best kept in a fridge in hot weather — they go rancid otherwise.
- Keep it out of reach of children.
- Do not use it after the expiry date, and throw it away if the capsules smell strongly off, have stuck together or changed colour.
Frequently Asked Questions
Will it build muscle?
Not on its own. Training and enough total protein build muscle. Glutamine may help with soreness in some people.
Does it taste of anything?
It is unflavoured. Glutamine is close to tasteless, which is why it mixes easily into shakes.
Is it 375g or 398g?
The tub in the photos says 398g (14.04oz); the listing title says 375g. Both are labelled 75 servings of 5g glutamine. Message us for the tub we hold.
Is this the genuine imported product?
Yes. It is sourced as an import, so the bottle is printed for its origin market rather than for Bangladesh. The seal should be intact when it reaches you — tell us straight away if it is not.
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