Best Supplements for Testosterone: What Raises It and What Doesn't
Most testosterone boosters don't work. Zinc and vitamin D help only if you're deficient; ashwagandha and fenugreek have small studies. See what to test first.
By the editorial team · Updated Oct 14, 2026 · 3 sources cited
The best supplements for testosterone only raise levels in specific cases. Zinc and vitamin D help men who are deficient. Ashwagandha and fenugreek showed small increases in a few industry-funded trials. Tribulus, a common booster ingredient, hasn't been shown to raise testosterone. Sleep, weight loss and strength training matter more.
Evidence-ranked options
| Supplement | Evidence | Typical dose | Notes |
|---|---|---|---|
| Vitamin D (if deficient) | C | As advised after a blood test | May help when levels are low. |
| Zinc (if deficient) | C | 15–25 mg a day | Deficiency lowers testosterone; extra zinc doesn't raise normal levels. |
| Ashwagandha | C | 300–600 mg root extract a day | Small trials report modest increases. |
| Fenugreek | C | 500–600 mg extract a day in studies | Mixed results; may affect blood sugar. |
| Tribulus terrestris | D | Not recommended | No reliable effect on testosterone. |
A: strong · B: moderate · C: limited or mixed · D: good evidence of no benefit. See the evidence database.
What raises testosterone naturally
- Sleep 7–9 hours: short sleep lowers testosterone
- Lose excess weight, especially around the waist
- Strength training
- Limit alcohol
- Review medications with your doctor; some lower testosterone
Related guides: men's health, libido and erectile dysfunction.
Ingredient guides
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Frequently asked questions
What are signs of low testosterone?
Low libido, erectile problems, fatigue, loss of muscle and low mood. These overlap with many conditions, so diagnosis requires morning blood tests.
Can supplements replace testosterone therapy?
No. If you have diagnosed low testosterone, discuss medical treatment with your doctor.
Sources
Educational content, not medical advice. Read our medical disclaimer.