Generic Name: niacinamide (NYE-a-sin-a-mide)
Brand Name: Generic only. No brands available.
Niacinamide is used for:
Treating or preventing low levels of niacin (vitamin B3). It may also be used for other conditions as determined by your doctor.
Niacinamide is a vitamin B supplement. It works by replacing vitamin B3 in the body.
Do NOT use niacinamide if:
- you are allergic to any ingredient in niacinamide
Contact your doctor or health care provider right away if any of these apply to you.
Before using niacinamide:
Some medical conditions may interact with niacinamide. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:
- if you are pregnant, planning to become pregnant, or are breast-feeding
- if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
- if you have allergies to medicines, foods, or other substances
- if you have diabetes, liver disease, an ulcer, glaucoma, or low blood pressure
- if you have severe bleeding
Some MEDICINES MAY INTERACT with niacinamide. Tell your health care provider if you are taking any other medicines, especially any of the following:
- Fibrates (eg, gemfibrozil, fenofibrate) or HMG-CoA reductase inhibitors (statins) (eg, simvastatin) because side effects, such as muscle aches and weakness, may occur and may be a symptom of a serious medical condition called rhabdomyolysis
- Alcohol because toxic effects, such as delirium and lactic acidosis, may occur
This may not be a complete list of all interactions that may occur. Ask your health care provider if niacinamide may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.
How to use niacinamide:
Use niacinamide as directed by your doctor. Check the label on the medicine for exact dosing instructions.
- Take niacinamide by mouth with or without food. If stomach upset occurs, take with food to reduce stomach irritation.
- If you miss taking a dose of niacinamide for 1 or more days, there is no cause for concern. If your doctor recommended that you take it, try to remember your dose every day.
Ask your health care provider any questions you may have about how to use niacinamide.
Important safety information:
- Niacinamide may cause dizziness, lightheadedness, or fainting. These effects may be worse if you take it with alcohol or certain medicines. Use niacinamide with caution. Do not drive or perform other possibly unsafe tasks until you know how you react to it.
- Do not take large doses of vitamins while you use niacinamide unless your doctor tells you to.
- Diabetes patients - Niacinamide may affect your blood sugar. Check blood sugar levels closely. Ask your doctor before you change the dose of your diabetes medicine.
- PREGNANCY and BREAST-FEEDING: If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using niacinamide while you are pregnant. Niacinamide is found in breast milk. If you are or will be breast-feeding while you use niacinamide, check with your doctor. Discuss any possible risks to your baby.
Possible side effects of niacinamide:
All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome:
Seek medical attention right away if any of these SEVERE side effects occur:
Diarrhea; dizziness; headache; itching; nausea; stomach upset; temporary feeling of warmth or flushing of the skin.
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); black, tarry, or bloody stools; changes in vision; dark urine; decreased urination; fast or irregular heartbeat; loss of appetite; muscle pain or weakness; numbness or persistent tingling of the skin; persistent nausea, vomiting, or general "unwell" feeling; severe or prolonged flushing of the skin; stomach pain; swelling of the hands, legs, or feet; vomit that looks like coffee grounds; yellowing of the skin or eyes.
This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.
If OVERDOSE is suspected:
Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center, or emergency room immediately.Proper storage of niacinamide:
Store niacinamide at room temperature, between 68 and 77 degrees F (20 and 25 degrees C). Store away from heat, moisture, and light. Do not store in the bathroom. Keep niacinamide out of the reach of children and away from pets.
- If you have any questions about niacinamide, please talk with your doctor, pharmacist, or other health care provider.
- Niacinamide is to be used only by the patient for whom it is prescribed. Do not share it with other people.
- If your symptoms do not improve or if they become worse, check with your doctor.
- Check with your pharmacist about how to dispose of unused medicine.
This information should not be used to decide whether or not to take niacinamide or any other medicine. Only your health care provider has the knowledge and training to decide which medicines are right for you. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about niacinamide. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to niacinamide. This information is not specific medical advice and does not replace information you receive from your health care provider. You must talk with your healthcare provider for complete information about the risks and benefits of using niacinamide.
Disclaimer: This information should not be used to decide whether or not to take this medicine or any other medicine. Only your health care provider has the knowledge and training to decide which medicines are right for you. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this medicine. This information is not specific medical advice and does not replace information you receive from your health care provider. You must talk with your healthcare provider for complete information about the risks and benefits of using this medicine.