Botanicals
Tongkat Ali — timing, dose & interactions
Root of the Southeast Asian shrub Eurycoma longifolia, marketed for testosterone and libido. A meta-analysis of five small trials found it raised total testosterone, mainly in men with low levels. In healthy volunteers it reduced absorption of the blood-pressure drug propranolol.
Also known as: Eurycoma longifolia, Longjack
Timing
When to take it
Morning, with breakfast.
Interactions
Tongkat Ali with other supplements
No documented supplement interactions in our dataset.
Safety
Medications & health conditions
Tongkat ali raises testosterone. In a meta-analysis it raised total testosterone. Avoid with a current or past hormone-sensitive cancer unless your oncologist agrees.
Tongkat ali can reduce propranolol absorption. In healthy volunteers it lowered propranolol levels by about 30% (peak levels by about 40%). If you take propranolol, take them apart and check with your prescriber.
Tongkat ali: no safety data in pregnancy. Tongkat ali has not been studied for safety in pregnancy or breastfeeding. Avoid unless your clinician recommends it.
Buying guide
What to look for on the label
Tongkat Ali
- Standardized water extract (e.g. LJ100® or Physta®)
FAQ
Common questions
When is the best time to take Tongkat Ali?
Breakfast. Morning, with breakfast.
Should Tongkat Ali be taken with food?
Yes. Taking it with a meal reduces stomach upset.
Sources