Adults (18 years and older):
In the United States, the recommended dietary allowance (RDA) of nicotinamide for individuals over 14 years of age is 16 milligrams daily for males and 14 milligrams daily for females. The RDA for women who are pregnant or breastfeeding is 17-18 milligrams daily. Infants require five milligrams daily. Nicotinamide is present in many vitamin preparations.
For acne, 4% nicotinamide gel has been applied to the affected area twice daily for eight weeks.
For dry skin, 2% nicotinamide cream has been applied to the affected area twice daily for eight weeks.
For hyperphosphatemia (high blood phosphorus, during hemodialysis), doses in the range of 500 milligrams to six grams have been taken by mouth daily for 12 weeks.
For hyperpigmentation (darkening of patches of skin), 5% niacinamide has been applied to the affected area twice daily for up to 12 weeks.
For osteoarthritis, 500 milligrams has been taken by mouth six times daily for 12 weeks.
For pellagra, 300-500 milligrams has been taken by mouth daily in divided doses.
You should read product labels, and discuss all therapies with a qualified healthcare provider. Natural Standard information does not constitute medical advice, diagnosis, or treatment.
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