Suitable for vegetarians. Sugar, salt and starch free. Solgar's No-Flush Niacin Vegicaps are free of corn, yeast, wheat, soy and dairy products and are formulated with out the use of preservatives, artificial flavors or colors. Solgar's No-Flush Niacin (Inositol Hexanicotinate) is Inositol bond Niacin. This special formulation of Niacin does not produce flushing or the gastrointestinal discomfort which may be associated with Niacin use.