Niacin is a type of B vitamin. It is vitamin B3 and is one of 8 B vitamins. It is also known as niacin (nicotinic acid).
Niaspan (which also has the generic name niacin) is used to improve cholesterol levels when exercise and a low-fat diet alone have not been adequate. Niaspan increases "good" high-density lipoprotein (HDL) cholesterol in your body and also lowers the "bad" low-density lipoprotein (LDL) cholesterol and triglycerides.
Hence you should check out with your Doctor regarding the exact drug that you are taking and for what purpose.
The answer is based on information provided. Exact advice is not possible without a proper examination and investigations. You are requested to consult your Doctor. Take care and keep us posted.
I think you should also be told that the use of Niaspan in studies failed to show any significant value versus a placebo (sugar pill)
Google---- niaspan effectiveness
Many articles about the lack of effectiveness of Niaspan.
Or look at this