Sources: Vitamin B3 is present in many foods including yeast, meat, fish, milk, eggs, green vegetables, and cereal grains. The term niacin is used to refer specifically to nicotinic acid, but is also used collectively to refer to both nicotinic acid and niacinamide.
Orally, niacin is used with diet therapy for treating hyperlipoproteinemia. It is also used in conjunction with other therapies for peripheral vascular disease, vascular spasm, migraine headache, Meniere's syndrome, vertigo and to reduce the diarrhea associated with cholera.
Orally, niacin or niacinamide is taken for preventing vitamin B3 deficiency, treating pellagra, schizophrenia, drug induced hallucinations, chronic brain syndrome, hyperkinesis, depression, motion sickness, alcohol dependence, vasculitis associated with skin lesions and edema, acne, leprosy, preventing premenstrual headache, improving digestion, protection from toxins and pollutants, for reducing the effects of aging, memory loss, arthritis, lowering of blood pressure, improving circulation, promoting relaxation, and improving orgasm.
Flushing, characterized by a burning, tingling, and itching sensation as well as erythema on the face, arms and chest, has been associated with doses as low as 30 mg per day. Onset is highly variable, with 30 minutes to as long as 1 hour.
Megabust contains niacin because of its vasodilation properties, and increased blood flow to the pelvic area and clitoris.