Do Testosterone Supplements Like Ashwagandha, Zinc, or Tongkat Ali Actually Work?

The Appeal of Testosterone Boosters

Walk into any supplement store and you'll find shelves of "testosterone boosters." They're popular because they're easy to buy and seem natural. But do they actually raise testosterone in a meaningful way?

What the Research Shows

Ashwagandha: Several small studies have found modest increases in testosterone in men taking ashwagandha, along with possible benefits for stress and sleep. Studies are generally short and small, and rare cases of liver injury have been reported.

Zinc: Zinc is essential for testosterone production. Supplementing can help men who are deficient, but there's little evidence it raises testosterone in men with normal zinc levels.

Tongkat ali (Eurycoma longifolia): Some small studies suggest modest improvements in testosterone, particularly in older men or men under stress. Product quality varies widely.

Vitamin D: Low vitamin D is linked to low testosterone, but supplementing in men who aren't deficient hasn't consistently raised testosterone.

Fenugreek: May modestly improve libido, with mixed effects on testosterone levels.

D-aspartic acid: Results are inconsistent, with most well-designed studies showing little benefit.

Important Cautions

• Effects are usually small: Even when supplements work, they rarely raise testosterone as much as lifestyle changes or medical treatment
• Quality isn't regulated: Supplements aren't reviewed by the FDA for effectiveness, and some products have been found to contain undisclosed ingredients or steroids
• Interactions: Some supplements can interact with medications
• Masking problems: Self-treating can delay diagnosis of conditions causing low testosterone

What Works Better

Losing excess weight, sleeping well, strength training, and limiting alcohol have stronger evidence for raising testosterone. For men with confirmed low testosterone, medical treatment is far more reliable than supplements.

Learn more about provider-guided hormone options here: Heva Hormone Optimization

The Bottom Line

Some supplements may offer small benefits, especially if you're deficient in a nutrient. But they're not a substitute for testing, healthy habits, or medical treatment when needed.