Dizziness may occur, especially when you rise from a sitting or lying position. Rise slowly and use caution when driving or performing other hazardous activities. Nicotinic acid, also known as niacin, is the vitamin B3. It occurs naturally in plants and animals, and it is also added to many foods as a vitamin supplement. Nicotinic acid is a necessary part of a healthy diet.
Nicotinic acid is used as a supplement to treat and to prevent niacin deficiencies and pellagra.
Nicotinic acid may also be used for purposes other than those listed in this medication guide. Do not take nicotinic acid if you have liver disease, or if you have an ulcer in your stomach. Alcohol can affect your liver and make treatment with nicotinic acid dangerous. Discuss with your doctor the amount of alcohol that you drink. You may need a lower dose of nicotinic acid or special monitoring during treatment if you have any of the conditions listed above.