Common Side Effects

• Common side effects of Nicotinamide include upset stomach, nausea, diarrhea, headache, stomach pain, unusual or unpleasant tastes in the mouth, and increased thirst. While these are considered the most common side effects associated with using this supplement, they only affect a small number of users.
  
  

Severe Side Effects

• Unfortunately, there are also a number of severe side effects associated with using Nicotinamide. Some of these side effects include allergic reaction, hives, skin rash, difficulty breathing, tightening of the chest, closing of the throat, and swelling of the lips, mouth, tongue, and throat. These side effects also are very rare and do not affect a large number of users.
  
  

Important Safety Information

• Some vitamins can be extremely dangerous if taken in abnormally high doses. More specifically, vitamins A, D, E, and K can cause serious and life-threatening circumstances in some users if not taken properly. Overdose symptoms include nausea, vomiting, diarrhea, constipation, hair loss, loss of appetite and severe back pain. If you are pregnant, consult with your doctor before beginning treatment with a multi-vitamin.
  
  

Use

• Always use Nicotinamide in direct conjunction with your doctor's orders and never in dosages larger than what has been recommended on the label. The supplement is administered in pill form and should be taken with a full glass of water. If desired, the pill also can be dissolved in water, fruit juice or infant formula. Nicotinamide should always be stored at room temperature and away from sources of moisture.
  
  

Warnings

• If you experience any of the side effects, contact your physician immediately. If an overdose is suspected, contact the poison control center and head directly to the nearest emergency room. Nicotinamide is meant as a multi-vitamin supplement only and should never be used recreationally.