Top 10 Glutamine Supplements
Our picks of glutamine supplements to aid recovery and gut health, focusing on purity and ease of use.
- ✅ Updated 2 December 2025
- 🏆 Best‑Selling
- 📝 Editorial Reviews & Comparisons
Editor’s quick picks
- Top pick:Optimum Nutrition L-Glutamine Powder
- Best value:MyProtein L-Glutamine Powder
- Best for flavour range:Alpha01 L‑Glutamine Powder 150 g
L‑Glutamine Powder
L‑Glutamine Powder
L‑Glutamine Powder 150 g
L‑Glutamine Powder
L‑Glutamine
Glutamine 500 g
L‑Glutamine 500 mg Capsules
L‑Glutamine
L‑Glutamine 800 mg Capsules
L‑Glutamine Capsules
Side-by-side comparison
| 🥇 ON Glutamine | 🥈 MyProtein Glutamine | 🥉 Alpha01 Glutamine | |
|---|---|---|---|
| Form | Powder | Powder | Powder |
| Serving Size | 5 g | 5 g | 5 g |
| Servings per Pack | ~60 | ~50–200 | ~30 |
| Flavours | Unflavoured | Unflavoured | Unflavoured |
| Purity & Extras | 100% L‑Glutamine; no additives | 100% L‑Glutamine; multiple tub sizes | Fermented & vegan‑friendly |
| Mixability/Texture | Fine powder; dissolves easily | Fine powder; dissolves easily | Fine powder; dissolves easily |
| Value for money | 3.5/5 | Best Value 4.0/5 | 3.0/5 |
| Overall | Excellent | Excellent | Good |
| Best for | Trusted Choice | Budget Pick | Vegan Friendly |
| View Product | View Product | View Product |
Serving figures and supporting notes are based on published product information at the time of writing. Any value-for-money scores shown are editorial judgements, not customer ratings.
FAQs
What does glutamine do?
Glutamine is an amino acid found naturally in your body. It plays a role in protein synthesis and may support immune and gut function. Supplementing can help maintain levels during intense training or periods of dietary restriction.
How should I take a glutamine supplement?
Most powders recommend around 5 g per serving mixed into water or shakes. Capsules offer smaller doses that can be taken with meals. Follow the directions on the label and adjust according to your needs.
Can I mix glutamine with protein shakes or BCAAs?
Yes. Glutamine is often added to protein or amino acid drinks. It dissolves easily and has little taste when unflavoured, so it blends well with other supplements.
Is glutamine a replacement for protein intake?
No. Glutamine supplements provide a single amino acid and are intended to complement a balanced diet. They shouldn’t replace complete protein sources or meals.