Serotone (K-38)Serotone Active helps to support the serotonergic system using nutrients, targeted amino acids, and cofactors.* This formula includes high potency vitamin B12 (1000 mcg per serving), vitamin B6, and niacin, and it is an excellent source of folate. Key ingredients include SAMe, 5 HTP, and high quality, standardized St. John's wort extract. Ingredients Niacin (as niacinamide) 50 mg NE 313% Vitamin B6 (as pyridoxal 5 phosphate) 10 mg 588% Folate (as