Tongkat Ali
Tongkat ali is a flowering plant (Eurycoma longifolia) native to the rainforests of Malaysia, Indonesia, and surrounding Southeast Asian countries. The root extract has a long history in traditional medicine for vitality and energy, and has gained attention in modern research for its effects on hormonal balance, particularly free testosterone levels and cortisol management.
Expert Evidence
12 references from 2 experts
“In the morning I take tongkat ali and fadogia. This is for freeing up testosterone and for luteinizing hormone stimulation. I've been on it for years, it works great. It shifted my testosterone and free testosterone in the right direction, subtly but meaningfully.”
Andrew Huberman's Longevity Routine (supplements, diet, peptides, and exercise regimen)
7:4911 references in 8 episodes from 2021–2025
Huberman is a strong advocate for Tongkat Ali, taking 400mg daily for years to increase free testosterone and libido. He reports subtle but meaningful hormonal benefits confirmed by blood work, though he notes no cautions, contraindications, or reasons to stop.
Consumption
Takes 400mg of Tongkat Ali once daily, early in the day due to its mild stimulant effect, and has done so continuously for years with regular blood work showing no adverse effects.
Benefits
Increases free testosterone by reducing sex hormone-binding globulin, raises luteinizing hormone, has subtle aphrodisiac and pro-fertility effects, and acts as a mild anti-estrogen.
Best Practices
Take 400mg per day in capsule form, early in the day to avoid sleep disruption; doses above 400mg are not well tolerated.
“The European Food Safety Authority has raised concerns about the potential for tongkat ali to cause DNA damage, which is definitely something to be aware of. So with the potential safety concerns of tongkat ali, I wouldn't take it.”
These Testosterone Boosters ACTUALLY Work
5:151 reference in 1 episode from 2024
Brad Stanfield recommends against taking tongkat ali, citing concerns raised by the European Food Safety Authority about its potential to cause DNA damage. He does not report any personal use, dosing guidance, or benefits—his position is purely cautionary based on safety concerns.
Side Effects
- Restlessness or mild insomnia if taken late in the day
- Irritability at higher doses
- Mild gastrointestinal discomfort
- Increased body temperature or sweating