There are a variety of supplements that have been studied for their potential to increase testosterone levels, although the evidence can be inconsistent and should be considered carefully:

1. Vitamin D: Supplementation with Vitamin D has shown to potentially increase testosterone levels, particularly in those with a deficiency¹.
2. Zinc: Zinc is beneficial in boosting testosterone levels when there is a deficiency. Lack of sufficient zinc intake can lead to lower testosterone levels².
3. Magnesium: Similar to zinc, magnesium supplementation has been associated with increases in testosterone levels, especially when combined with exercise³.
4. Ashwagandha: This herb has shown some promise in increasing testosterone levels in men, particularly in the context of reducing stress and increasing fertility⁴.
5. Fenugreek: Fenugreek extract has been found in some studies to have a positive effect on testosterone levels⁴.

However, it's crucial to note that not all "testosterone boosting" supplements have proven efficacy, and some may even contain ingredients that lack strong evidence of benefit or may exceed recommended daily allowances⁵⁶.

Would you like to search for products containing any of these specific supplements?

Footnotes

1. S Pilz, "Effect of vitamin D supplementation on testosterone levels in men," PubMed, 2010. Link ↩

2. Examine.com, "Increase testosterone naturally," 2023. Link ↩

3. Examine.com, "Conditions with low testosterone," 2023. Link ↩

4. Stephen J Smith, "Examining the Effects of Herbs on Testosterone Concentrations in Men: A Systematic Review", PubMed, 2021. Link ↩ ↩²

5. Chase G Clemesha, "'Testosterone Boosting' Supplements Composition and Claims Are not Supported by the Academic Literature," PubMed, 2020. Link ↩

6. Amit Zamir, "Manipulation of Dietary Intake on Changes in Circulating Testosterone Concentrations," PubMed, 2025. Link ↩