Alpha-ketoglutarate (AKG)
Key facts
Daily Value (US FDA)—
Tolerable Upper Intake Level (UL)—
Median (Per day)1,000 mgP5 20 – P95 4,009
Products506
No authoritative upper value was found. Bounds used to screen out obvious label errors are estimated from the label distribution; see the Methodology.
Daily dose across products (mg/day)
3.2 mglog scale · n=50610,500 mg
Label data from official national databases and brand websites, as declared; not lab-verified.
Which AKG compound?
Labels use “AKG” for several different compounds. Arginine AKG (AAKG) and ornithine AKG (OKG) state the weight of the whole salt, and the AKG share is not given, so their doses cannot be compared directly with free AKG or calcium AKG, and they are left out of rankings.
| Form | Products | Median |
|---|---|---|
| AKG (free acid or unspecified) | 113 | 200 mg |
| Calcium AKG (Ca-AKG) | 15 | 658 mg |
| Arginine AKG (AAKG) | 312 | 1,500 mg |
| Ornithine AKG (OKG) | 101 | 1,000 mg |
The dose distribution above includes all compounds and is shown for market context only.
For information only; not medical advice. Talk to a doctor or pharmacist before starting or stopping any supplement.