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This medicine may interact with other drugs or health problems.
Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take niacinamide with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.
Use niacinamide as ordered by your doctor. Read all information given to you. Follow all instructions closely.
What do I do if I miss a dose?
WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:
All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:
These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.
You may report side effects to the FDA at 1-800-FDA-1088. You may also report side effects at http://www.fda.gov/medwatch.
If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Medical Disclaimer
Medically reviewed by USARx EDITORIAL TEAM Last updated on 1/27/2021.
Source: Drugs.com Niacinamide (www.drugs.com/cdi/niacinamide.html).
Applies to niacinamide: oral tablet, oral tablet extended release
What are some side effects that I need to call my doctor about right away?WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:
All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:
These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.
You may report side effects to the FDA at 1-800-FDA-1088. You may also report side effects at http://www.fda.gov/medwatch.
For Healthcare ProfessionalsApplies to niacinamide: compounding powder, oral tablet
CardiovascularCardiovascular side effects are rare and mild and have included tachycardia.
MetabolicMetabolic side effects have included hyperglycemia and hyperuricemia.
Nervous systemNervous system side effects have included headache.
GastrointestinalGastrointestinal side effects have included bloating, flatulence, diarrhea, stomach upset, and nausea.
DermatologicDermatologic side effects have included increased sebaceous gland activity, dry skin, itching, and rash.
Medically reviewed by USARx EDITORIAL TEAM Last updated on 1/27/2021.
Source: Drugs.com Niacinamide (www.drugs.com/cdi/niacinamide.html).
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