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This medication should be stored at room temperature, away from moisture and heat. Keep this and all other medications out of the reach of children.

What Should I Do If I Miss My Niacin Dose?

For immediate-release niacin, if you forget to take a dose, take your missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not take a double dose. For slow-release or extended-release niacin products (which are taken just once a day, usually at bedtime), it is probably best to simply skip a missed dose.
If you miss several niacin doses, you will probably need to restart back at a low dose and slowly work up to your previous dosage (just like when starting the medication for the first time), in order to avoid intolerable side effects.


Niacin is available in the following strengths and forms:
  • Prescription-only, FDA-approved products:


    • Niaspan -- 500 mg, 750 mg, and 1000 mg extended-release tablets
    • Niacor -- 500 mg immediate-release tablets



    • Immediate release niacin -- numerous strengths, ranging from 100 mg to 500 mg tablets
    • Slow-Niacin -- 250 mg, 500 mg, and 750 mg controlled-release tablets
    • Various other controlled-release tablets and capsules (labeled as "controlled-release", "timed-release", or "sustained-release" -- numerous strengths, up to 1000 mg in both capsules and tablets.


Different forms of niacin are not interchangeable.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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