10 Side Effects of Niacin
Niacin Side Effect #6: Itching
Itching is often caused by something that is just under or on the skin. It is sometimes a way of your body letting you know that something is there that shouldn’t be. If a chemical was to land on your body, for example, you will soon be alerted to it. At other times, though, it is more of a reaction to something rather than a means of communication.
When niacin causes the blood vessels to dilate, it causes the blood flow through those blood vessels to increase. This increased blood flow can irritate the nearby skin, resulting in what we feel as an itch. It is a fairly common symptom of niacin but can also be a sign of an allergy so you should speak with a doctor if it is severe.
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