niacinamide 250 MG Oral Tablet

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Clinical drug

niacinamide 250 MG Oral Tablet

250 MG · Oral Tablet · oral

A form of niacinamide

niacinamide 250 MG Oral Tablet — Other plain vitamin preparations. Strength, form, class, interactions & more.

niacinamide 250 MG Oral Tablet

Active ingredient

Classification

Other plain vitamin preparations

Drug interactions

The label outlines several drug interactions with various medications and supplements.

  • unknownanti-thyroid drugs — may lead to hypothyroidism
  • moderatemedications for hypertension — may increase potassium levels in blood
  • moderatecarbamazepine, fosphenytoin, phenytoin, phenobarbital, valproic acid — may result in decreased serum levels
  • moderatemethotrexate — may decrease a patient's response
  • unknowncalcium — should not be given with large amounts in those with hypercalcemia
  • moderatecertain antibiotics — can inhibit the absorption

Dosage

DOSAGE AND ADMINISTRATION: Take 1-2 tablets daily, as a dietary supplement, as directed by your physician. HOW SUPPLIED: Nicotinamide Tablets are white-colored, oval-shaped tablets debossed on one side with “342”, and are supplied in bottles of 60 tablets (42192-374-60). The listed product number is not a National Drug Code. Instead, Acella has assigned a product code formatted according to standard industry practice in order to comply with the formatting requirements of pharmacy and healthcare insurance computer systems. STORAGE: Store at 20° - 25°C (68° - 77°F); excursions permitted to 15° - 30°C (59° - 86°F). [See USP Controlled Room Temperature.] MANUFACTURED FOR: Acella Pharmaceuticals, LLC Alpharetta, GA 30005 1-800-541-4802 L-0289 Rev 0321-01 *Subject to one or more claims of U.S. Patent Nos. 7,582,418, 7,838,042 and 8,425,956.

Warnings

THESE STATEMENTS HAVE NOT BEEN EVALUATED BY THE FOOD AND DRUG ADMINISTRATION. THIS PRODUCT IS NOT INTENDED TO DIAGNOSE, TREAT, CURE, OR PREVENT ANY DISEASE. KEEP THIS AND ALL MEDICATIONS OUT OF THE REACH OF CHILDREN. WARNINGS: If you are pregnant, nursing, or taking medication, consult your doctor before use. Use only under the advice and supervision of a physician if you have a history of jaundice, liver disease or diabetes. Abnormal liver function tests have been reported in persons taking daily doses of 500 mg or more of niacinamide. Folate intake should not exceed 250% of the Daily Value (1,000 mcg). PREGNANCY & NURSING MOTHERS: Nicotinamide Tablets is not indicated for use as a prenatal/postnatal multivitamin for lactating and nonlactating mothers. Physicians and medical practitioners should administer Nicotinamide Tablets with caution to patients who are pregnant, lactating and/or taking medication. ADVERSE REACTIONS: Allergic sensitization has been reported rarely following oral and parental administration of Folate.

Source: RxNorm + openFDA + RxClass + FAERS · 2026

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