Rhodiola crenulata

Tier 3 — weak evidence · Altitude · Endurance · Distinct species

A different species from the more common Rhodiola rosea, traditionally used in Tibetan medicine for altitude sickness. A 2024 trial found 800 mg per day significantly reduced altitude sickness symptoms. Watch out when purchasing because products often mix up the two species. Verify the label says crenulata, not rosea. Limited safety data.

Dose: 400–800 mg/day standardised extract; verify species (crenulata, not rosea)