Everything DoseRank tracks on the l-glutamine shelf — Alanyl-L-Glutamine. The category itself is never ranked: 175 products get scored the moment you say what you want them to do.
How to read the scores
This legend covers the scores on this page — for data sources, scoring weights, and limits, read the full methodology →
Answer a few questions about your goals, habits, stack, and budget. Then, DoseRank will find the products that best match your needs based on your answers. It's free and only takes 60 seconds! No account is required.
A saved, shareable breakdown: your matched products, dose math, interaction flags to discuss with a clinician, and a price-tracked stack you can revisit.
Questions
Each product gets a composite score blending clinical strength, evidence, dose fit, trust and value — computed for the goal you picked, across this category's products. The #1 on the DoseRank tab has the highest composite; the other tabs re-rank the same products by Value, Trust, or Popularity. Placement is never paid.
Start with a goal, not a brand
Browsing l-glutamine supplements without a goal makes no sense — different products do different jobs, and “best” flips depending on which job you're hiring for. These are the 45 health outcomes that matter for this category. Pick yours, and the full evidence-ranked shelf loads for that goal alone.
Intestinal permeabilityBarrier integrity and leakiness of the gut lining.128 rankedStrong
Exercise recoveryReturn to baseline function after exertion.143 rankedStrong
Delayed-onset muscle sorenessPost-exercise muscle pain and stiffness.146 rankedModerate-strong
Muscle massQuantity of skeletal muscle tissue.41 rankedStrong
Lean body massNon-fat body mass, often used as a marker of preserved musculature.33 rankedStrongActivities of daily livingCapacity to complete routine self-care activities independently.2 rankedStrong
Sarcopenia statusPresence of low muscle mass and function.9 rankedStrong
Power outputAbility to generate force rapidly.6 rankedStrong
Liver functionOverall biochemical or clinical hepatic performance.13 rankedModerate-strong
Pregnancy rateFrequency of achieved pregnancies.1 rankedModerate-strong
IrritabilityLow threshold for frustration or anger.5 rankedLimited
Resting energy expenditureCalories burned at rest; marker of basal metabolism.25 rankedStrong
ThermogenesisHeat production and metabolic energy expenditure.24 rankedStrong
MemoryAbility to encode, store, and retrieve information.13 rankedStrong
Omega-3 indexRed blood cell EPA+DHA content reflecting omega-3 status.5 rankedStrongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best l-glutamine supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 175 products against that goal's trials.