Flush-Free Niacin: Benefits, Side Effects & What to Expect

Flush-free niacin is a supplement used to lower triglycerides and cholesterol, and it is also used to improve circulation. It is called "flush-free" because it does not cause the face or neck to become flushed when taking it, due to a rush of blood. Even though flush-free niacin helps to reduce fatty substances in the blood, it can still come with some side effects.

Appetite

• A side effect that can be seen with flush free niacin is a lack of appetite.

Digestive System

• The digestive system can also get affected by niacin. A symptom that can develop is diarrhea.

Stomach

• The stomach can become upset, nausea can develop and vomiting can also take place.

Swelling

• The face, lips, mouth and tongue can all swell up when taking flush-free niacin.

Skin

• The skin can show symptoms such as irritation, itchiness and rashes such as hives. The skin can also become yellow.

Respiration

• Breathing can become labored or there can be a shortness of breath which can also lead to feeling lightheaded.