L-Glutamine is an amino acid that the body uses heavily in the gut and immune system, and it is also common in sports nutrition. People usually shop for it for gut-health support, recovery support, or general amino-acid supplementation. Most products are simple: plain powder in a tub or pouch, or capsules and tablets that deliver smaller amounts per serving.
L-Glutamine pricing usually comes down to convenience and daily amount rather than complicated formulas. Bulk powder is usually the value baseline, while capsules and tablets can become much more expensive once you add up how many grams, scoops, or pills it takes to reach a meaningful daily intake. The rankings below use 5 g/day so powders, capsules, and tablets can be compared on the same monthly-cost basis.
Prices as of June 13, 2026. Prices update daily; this page updates monthly. For current prices and full interactive filters, see the L-Glutamine compare page.
| Rank | Brand | Product | Form | Cost per month | Price |
|---|---|---|---|---|---|
| 1 | — | Sports Research L-Glutamine - Workout Recovery, Immune Heal… | Powder | $4.49 | $14.97 |
| 2 | Micro Ingredients | Pure L-Glutamine Powder, 2.2lbs (1kg) | Free Form Amino Ac… | Powder | $4.50 | $29.99 |
| 3 | Type Zero | Type Zero L Glutamine Powder, 200 Servings of 5000mg - 6 Mo… | Powder | $4.79 | $31.95 |
| 4 | NAKED | Pure L-Glutamine Made in the USA - 200 Servings - 1,000g, 2… | Powder | $5.25 | $34.99 |
| 5 | BulkSupplements | BulkSupplements.com L-Glutamine Powder - Glutamine Suppleme… | Powder | $5.85 | $38.97 |
| Rank | Brand | Product | Form | Cost per month | Price |
|---|---|---|---|---|---|
| 1 | Best Naturals | Best Naturals L-Glutamine 1000mg Fuel for Workout (Non-GMO)… | Tablets | $12.49 | $14.99 |
| 2 | Amazing Nutrition | Amazing Formulas L-Glutamine Supplement | 1000 Mg Per Serv… | Tablets | $12.49 | $19.99 |
| 3 | BulkSupplements | BulkSupplements.com L-Glutamine Capsules - Glutamine Supple… | Capsules | $12.98 | $25.97 |
| 4 | Carlyle | Carlyle L Glutamine Capsules | 1500mg | 240 Count | Adva… | Capsules | $17.49 | $13.99 |
| 5 | NOW Foods | NOW Foods L-Glutamine 1,000 Milligram, 120 Capsules | Capsules | $17.86 | $14.29 |
See all L-Glutamine products with full filter and sort options ->
Decide first whether you want the cheapest grams or the easiest routine. In L-glutamine, that choice drives most of the price spread. Large powder tubs and pouches usually deliver the lowest monthly cost, especially when a serving is already 5 g. Capsules and tablets can be easier to travel with and easier to take without mixing, but that convenience often costs far more per month.
Check the grams per serving before you compare bottles. Many powders in this market give a full 5 g in one serving, which makes the math simple. Capsule products often do not. Some provide 1 g per serving, and some premium capsules provide only 500 mg per capsule. At a 5 g comparison point, that means you may need several capsules or multiple servings per day, which can turn a normal-looking bottle into an expensive one very quickly.
Read the Supplement Facts panel, not just the big number on the front. This is especially important for capsule products. A front label may say "1 g L-Glutamine," but that can mean 1 g per serving rather than 1 g per capsule. If the serving is two capsules, or if the product uses a smaller 500 mg capsule, the real daily pill count is much higher than a quick glance suggests.
Single-ingredient labels are the norm here, which is good for clean price comparisons. Most reviewed L-glutamine products are straightforward and list L-glutamine with few or no extras. That means you usually do not need to sort through a long proprietary blend before deciding whether the price is fair. If you want the cleanest comparison, start with products that clearly show L-glutamine alone and do not add extra ingredients that distract from the grams-per-dollar math.
Treat scoop instructions as something to verify, not something to assume. Powders are often the best value, but the serving instructions are not always perfectly aligned across the label. Some products clearly show 1 scoop equals 5 g, while others describe 2 scoops as the 5 g serving or give usage directions that are less clear than the Supplement Facts panel. When you compare powders, confirm both the serving size and how many scoops it takes to get there.
Use quality and testing claims as tie-breakers after the dose math is clear. Third-party testing, GMP manufacturing, non-GMO claims, and filler-free formulas can help separate two otherwise similar L-glutamine options. Those claims matter more after you know the product gives you the amount you want in a form you will actually use and the monthly cost still makes sense.
L-glutamine is one of those supplements where the amount used in practice can vary a lot. A 5 g daily intake is a useful comparison point because it lines up well with many sports-nutrition labels, but some gut-focused protocols use much higher amounts. If you are shopping with a higher intake in mind, powder usually scales better than capsules because the pill count and monthly cost can climb fast.
Evidence for L-glutamine is mixed rather than uniformly strong. Support is strongest in settings such as critical illness and post-surgical recovery, and there is more serious interest in higher-dose gut-focused use than in routine muscle-recovery claims for healthy athletes. That makes it worth separating evidence-backed use cases from broader sports-marketing language.
The 5 g/day comparison point is a practical way to line products up on the same monthly-cost basis, not a claim that every shopper should take exactly that amount. L-glutamine is generally tolerated well, but higher intakes can be harder on the stomach for some people, and anyone who is pregnant, managing a medical condition, or taking regular medication should check with a clinician before using it regularly.