Melatonin drops more quickly around age 40 and even more with women after menopause. It also supports the immune system, counteracts aging, and is a natural aromatase inhibitor meaning it can reduce the development of breast cancer. Melatonin supports a normal circadian rhythm for healthy sleep patterns and provides support for GI health via its antioxidant effect. Vitamin B6 supports protein synthesis, GABA production, and dopa to dopamine conversion.