Glutamine alpha-ketogutarate
Evidence: LimitedUseful mainly for clinical-nutrition contexts (surgical/critically ill) under medical supervision.
Quick decision guide
May help most
clinical-nutrition contexts (surgical/critically ill) under medical supervision
Common dosing range
varies; clinical studies use gram-level doses, often intravenous
When to expect effects
Days in clinical settings
Watch out for
Studied mainly in hospital settings; benefit in healthy people is unproven
What is it
Glutamine alpha-ketoglutarate (G-AKG) is a salt pairing the amino acid glutamine with alpha-ketoglutarate, a Krebs-cycle intermediate. It is used in clinical nutrition to supply glutamine and supply carbon/nitrogen substrate, mainly studied in surgical, critically ill, or parenterally fed patients. Consumer use is marketed for muscle and recovery, but evidence in healthy people is sparse.
Is it worth it for you?
Use this as a quick fit check, not a diagnosis.
Worth considering if…
Probably skip if…
Evidence at a glance
| Goal | Evidence | Effect | Best fit | Time |
|---|---|---|---|---|
| nitrogen balance in surgical or critically ill patients | Limited Evidence | Improved nitrogen balance in some studies | post-surgical or critically ill patients receiving nutrition support | Days |
Evidence for 1 use
AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.
nitrogen balance in surgical or critically ill patients
Biomarker supportSmall clinical-nutrition studies, often using parenteral glutamine alpha-ketoglutarate, report improved nitrogen balance and glutamine status in surgical or critically ill patients. Evidence is limited, heterogeneous, and centered on metabolic biomarkers rather than clear clinical outcomes, and does not extend to healthy users.
Bottom line: Some biomarker support in clinical nutrition settings, with little relevance to healthy consumers.
How to take it
- Typical dose
- as directed clinically; consumer dosing is not well established
- Timing
- per protocol
- With food
- either
- How long to try
- short-term in clinical use
What to track
- clinical recovery markers if used medically
- GI tolerance
- guidance from a supervising clinician
Safety
Common side effects
GI upset
Who should avoid it
- people with significant kidney or liver impairment unless supervised
Pregnancy & breastfeeding
No adequate safety data; avoid outside medical supervision.
Choosing a product
Look for
- states glutamine and alpha-ketoglutarate content
- clear sourcing and purity testing
Be skeptical of
- muscle-building or anti-aging guarantees
- extrapolating hospital findings to healthy users
- longevity claims borrowed from alpha-ketoglutarate hype
References by claim
Track Glutamine alpha-ketogutarate with Pilora
Set up dose reminders, check interactions, and join the community in the Pilora iPhone app.
Coming to App StoreDisclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.