Niaspan is a brand-name of the vitamin B-3 supplement known generically as niacin. It allows the vitamin's release over a controlled period. Niaspan helps to balance your cholesterol by raising the level of high-density lipoproteins, or good cholesterol, while decreasing your levels of fats called triglycerides and low-density lipoproteins, known as bad cholesterol. High cholesterol levels can cause your arteries to become blocked, which can lead to such serious health problems as strokes and heart attacks. This supplement may induce some side effects.
Arrhythmia
Taking Niaspan may cause fluctuations in your normal heart rate, Drugs.com reports. It may induce tachycardia, an acceleration of your heartbeat beyond normal at-rest levels. As an average adult, your resting heart rate resides between 60 and 100 beats each minute. Niaspan may push your heart rate beyond 100. The supplement also may cause palpitations, a sensation of pounding heartbeats. It also may make your heart beat irregularly. Any one of these side effects constitutes a serious health problem, so go to the nearest emergency room or contact your physician immediately if you notice any change in your regular heartbeat.
Lightheadedness
Lightheadedness may make you feel as though you could suffer syncope or fainting. If you stand while this occurs, it could cause you to fall down, from which injury may occur. Whether you fall or not, if you experience lightheadedness while taking Niaspan, speak with your doctor immediately for help, Drugs.com recommends.
Digestive Problems
Niaspan often produced disturbances of the digestive system in patients participating in a clinical trial, RxList.com notes. Of these, diarrhea occurred most often. If you get this common and nonserious side effect, it should occur in a mild form and can manifest with cramps. Diarrhea should subside on its own, as should other digestive side effects such as nausea and gas. If these problems continue to plague you, consult your physician.
Flushing
The single most common nonserious side effect associated with Niaspan in a clinical trial was flushing, RxList.com reports. Flushing makes your skin appear red and warm, and may produce a sudden outbreak of sweat. It may occur in your face or throughout your body. You also may get a sensation of tingling in your skin from Niaspan. Neither of these side effects presents serious health concerns unless that persist or feel severe.
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