Tongkat ali is a Southeast Asian root sold to raise testosterone.
Calculator Official intake Study doses Best form Safety Sources
This is not an essential nutrient, so there is no official daily intake. Only study doses are shown.
These are doses tested in research, not personal advice. Some exceed the upper limit because they were short courses or given under medical care.
No single dose
A meta-analysis of 5 trials found higher total testosterone, also in men with low testosterone. The authors call it promising but say more research is needed.
Not a normal food.
Little is known. Avoid with hormone-sensitive conditions.
Product quality varies; long-term safety is not well studied.
Pregnant, breastfeeding, on medication, or managing a health condition? Check with a doctor or pharmacist before starting a supplement.
Values checked: November 12, 2026.