L-Tyrosine can be a precursor of dopamine and norepinephrine. These chemicals are naturally produced in the body and regulate stress. These get depleted by stress and overwork and tyrosine supplements can help replenish them. As a result, this supplement alleviates stress and creates a feeling of contention. It also acts as a precursor to adrenaline which is another stress regulator as well as the hormones of the thyroid gland. However, high blood pressure and melanoma patients should be careful in its use, since the epinephrine and adrenaline formed by it causes arterial contractions and tyrosine can also cause enhanced cell proliferation in the case of melanoma.

Vitamin B6 is important to a healthy human diet and is equally important in various metabolic and synthesis functions as well as gene expression.