B6

Vitamin B6 may inhibit prolactin; because prolactin and dopamine act in a push-pull relationship, lowering prolactin may indirectly increase dopamine and potentially support testosterone. 1 2

• B6 and zinc: They are commonly combined in products marketed as “testosterone boosters.” The proposed effect is suppressing prolactin—not directly increasing testosterone—which may in turn increase dopamine. 3
• Hyperprolactinemia: It can cause a major decrease in libido. Prescription treatment should be managed with medical guidance, such as consultation with an endocrinologist. 4