Fenugreek saponins might increase testosterone levels by increasing the activity of enzymes involved in testosterone production. Boron increases the metabolism of the total testosterone in your body to free testosterone by inhibiting the hormone aromatase. Tribulus supplies protodioscin which increases levels of testosterone, luteinizing hormone, dehydroepiandrosterone (DHEA), and dihydrotestosterone. Honey Goat Weed glycosides increase testosterone secretion. Stinging Nettle elevates free testosterone levels by reducing conversion of androgens to estrogens via aromatase inhibition. Diindolylmethane (DIM) produces more ‘good’ estrogen metabolites, which compete with testosterone for protein binding, helping to maintain a higher ‘free’ testosterone level.