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SCORE
Glutamine (standalone, healthy adults)
Gut health / Immunity
Tier 3 — Trending
What it is
Has real evidence for helping critically ill and hospitalized patients recover. However, your body already makes about 80 g per day on its own, so supplements add little benefit for healthy people who eat enough protein. The one exception is post-infectious irritable bowel syndrome, where 15 g per day may help restore gut lining. Very safe.
Efficacy
2/5
Safety
4/5
Research
2/5
Onset
3/5
Cost
3/5
Drug-int.
5/5
Dose
15 g/day for post-infectious IBS-D (best current application)
Time of day & tips
Can be taken with food or water. No major drug or food interactions. Can be mixed into drinks. Very well tolerated even at higher doses for healthy individuals.
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