Several supplements have been shown to raise testosterone levels in certain studies:

1. Fenugreek: Four out of six studies on fenugreek found increases in total testosterone, and three out of four studies also found increases in free testosterone¹.

2. Ashwagandha: Three out of four studies on ashwagandha showed increases in total testosterone¹.

3. Forskolin: One study observed a significant increase in total testosterone levels².

4. Vitamin D: Supplementation with vitamin D has been shown to increase total, bioactive, and free testosterone levels in men with initially low vitamin D levels³.

5. Zinc and Magnesium: Supplementing with these minerals can slightly increase testosterone levels if dietary intake and serum levels are inadequate⁴.

While some supplements like fenugreek, ashwagandha, and forskolin have shown promising results, it is important to note that the evidence is not uniformly strong across all studies, and the efficacy and safety of these supplements may vary.

Footnotes

1. Examine.com, Examining the Effects of Herbs on Testosterone Concentrations in Men. ↩ ↩²

2. Examine.com, Testosterone Boosting Supplements. ↩

3. PubMed, Effect of vitamin D supplementation on testosterone levels in men. ↩

4. Examine.com, Supplements for Low Testosterone. ↩

Tongkat ali (Eurycoma longifolia), also known as longjack, has shown potential in increasing testosterone levels, particularly in men with low testosterone or hypogonadism. Here are some findings from recent studies:

1. Systematic Review and Meta-Analysis: A 2022 systematic review and meta-analysis found a significant improvement in total testosterone levels with tongkat ali supplementation in both healthy volunteers and hypogonadal men¹. Significant effects were noted primarily in men with low testosterone levels.

2. Clinical Trial on Hypogonadal Men: A clinical study involving 76 men with late-onset hypogonadism (LOH) indicated that a 200 mg daily dose of a standardized water-soluble extract of tongkat ali for one month significantly improved serum testosterone levels. Before treatment, only 35.5% of the men had normal testosterone levels; after treatment, this number increased to 90.8%².

3. Pilot Study in Seniors: Another study involving physically active male and female seniors (ages 57-72) supplemented with 400 mg of tongkat ali extract daily for five weeks showed significant increases in total and free testosterone levels, along with improved muscle strength³.

4. Comparison Across Dosages: Several studies highlighted different dosages and durations, with some showing significant increases in testosterone (e.g., 200 mg/day for six months, and 600 mg/day for two weeks) while others found no effect⁴. This suggests that individual responses and dosages may vary.

5. Concurrent Training and Supplementation: A study noted that a combination of tongkat ali supplementation (200 mg) and concurrent training for six months significantly improved erectile function and increased total testosterone levels in men with androgen deficiency of aging males (ADAM)⁵.

Overall, while tongkat ali shows promise in increasing testosterone levels, particularly in men with initially low testosterone, the results are variable and additional research is needed to fully understand its efficacy and safety.

Footnotes

1. Kristian Leisegang, "Eurycoma longifolia (Jack) Improves Serum Total Testosterone in Men: A Systematic Review and Meta-Analysis of Clinical Trials", PubMed, 2022. ↩

2. M I B M Tambi, "Standardised water-soluble extract of Eurycoma longifolia, Tongkat ali, as testosterone booster for managing men with late-onset hypogonadism?", PubMed, 2011. ↩

3. Ralf R Henkel, "Tongkat Ali as a potential herbal supplement for physically active male and female seniors--a pilot study", PubMed, 2013. ↩

4. Examine.com, "Does tongkat ali increase testosterone levels?", Examine.com, 2023. ↩

5. Alice Erwig Leitão, "A 6-month, double-blind, placebo-controlled, randomized trial to evaluate the effect of Eurycoma longifolia (Tongkat Ali) and concurrent training on erectile function and testosterone levels in androgen deficiency of aging males (ADAM)", PubMed, 2020. ↩

Determining which supplement has the most benefits depends on the individual's specific health goals and needs. However, in the context of raising testosterone levels, the following supplements are noteworthy:

1. Fenugreek:

   • Benefits: Boosts both total and free testosterone levels and may improve strength and body composition.
   • Evidence: Four out of six studies on fenugreek found increases in total testosterone, and three out of four studies also found increases in free testosterone¹.

2. Ashwagandha:

   • Benefits: Increases total testosterone, reduces stress, may improve muscle strength, and enhance overall well-being.
   • Evidence: Three out of four studies on ashwagandha showed increases in total testosterone².

3. Vitamin D:

   • Benefits: Improves bone health, immune function, and increases total, bioactive, and free testosterone in men with low vitamin D levels.
   • Evidence: One study showed significant increases in different testosterone measures with vitamin D supplementation³.

4. Tongkat Ali:

   • Benefits: Increases testosterone levels, particularly in men with low testosterone, improves erectile function, enhances mood, and reduces stress.
   • Evidence: Multiple studies have indicated significant improvements in testosterone levels, particularly in hypogonadal men⁴⁵⁶.

5. Zinc and Magnesium:

   • Benefits: Essential for many biological functions, including immune support, and increasing testosterone levels if deficiencies are present.
   • Evidence: Supplementing with these minerals can slightly increase testosterone levels if dietary intake and serum levels are inadequate⁷⁸.

Given these options, Tongkat Ali appears to have a broad range of benefits, not only boosting testosterone levels but also improving erectile function, mood, and reducing stress. However, its efficacy varies based on individual response and initial testosterone levels.

It's important to consult with a healthcare provider before starting any new supplement regimen.

Footnotes

1. Examine.com, Examining the Effects of Herbs on Testosterone Concentrations in Men. ↩

2. Examine.com, Testosterone Boosting Supplements. ↩

3. PubMed, Effect of vitamin D supplementation on testosterone levels in men. ↩

4. Examine.com, Tongkat Ali. ↩

5. Kristian Leisegang, Eurycoma longifolia (Jack) Improves Serum Total Testosterone in Men: A Systematic Review and Meta-Analysis of Clinical Trials. ↩

6. M I B M Tambi, Standardised water-soluble extract of Eurycoma longifolia, Tongkat ali,. ↩

7. Examine.com, Supplements for Low Testosterone. ↩

8. PubMed, Effects of magnesium supplementation on testosterone levels of athletes and sedentary subjects.
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