Other ingredients
Cellulose; Hydroxypropyl Methylcellulose (HPMC); Stearic Acid; Gum Acacia; Magnesium Silicate (Mg Silicate); Magnesium Stearate (Mg Stearate); Polyethylene Glycol (PEG); Polysorbate; Polyvinyl Alcohol; Silicon Dioxide (SiO2)
Image: NIH Office of Dietary Supplements, Dietary Supplement Label Database — No separate image reuse license stated
21st Century
Niacinamide 500 mg
Tablet or Pill
Serving size1 Tablet(s)
Servings per containerNot listed
Package110 Tablet(s)
Data retrievedJul 28, 2026
Supplement Facts
Serving size 1 Tablet(s)
Niacinamide500 mg3125% DV
Calcium160 mg12% DV
Label directions
Directions: As a vitamin supplement; adults take one (1) tablet daily with any meal or as directed by a healthcare provider.
Label warnings
Do not exceed recommended dosage. Individual results may vary. Stop use and contact a physician if adverse reactions occur. Do not use if product appears to be tampered with or seal is broken. Warning: Consult a healthcare provider prior to use if pregnant nursing on medications have a medical condition or are planning a medical procedure. Keep out of reach of children.
Identity and label version
NIH label record326336
Entered into NIH DSLDMar 25, 2025
UPC / GTIN00740985225509
Manufacturer / distributor on label21st Century HealthCare Inc.
Market statusOn market in the source data
“Entered into NIH DSLD” is the database entry date for this label record. It is not a manufacturer launch date or a label effective date.
NIH label history (1)
Current labelNIH record 326336Entered Mar 25, 2025
Niacinamide500 mg
Calcium160 mg
Label warning: Do not exceed recommended dosage. Individual results may vary. Stop use and contact a physician if adverse reactions occur. Do not use if product appears to be tampered with or seal is broken. Warning: Consult a healthcare provider prior to use if pregnant nursing on medications have a medical condition or are planning a medical procedure. Keep out of reach of children.
Sources and traceability
- NIH Dietary Supplement Label DatabaseData retrieved Jul 28, 2026Open source ↗
More from 21st Century
Data comes from product labels or official public sources. It does not mean Safmira, NIH, or FDA approves, certifies, or recommends this product. Label amounts are not laboratory measurements.