Here are some Iâve found on the subject of art and art history. â 1  Art is not what you see, but what you make others seeâ -Edgar Degas. â 2 Painting is poetry that is seen rather than felt, and poetry is painting that is felt rather than seenâ â Leonardo Da Vinci.
Other forms of vitamin B 3 include the corresponding amide and nicotinamide (niacinamide), where the carboxyl group has been replaced by a carboxamide group (CONH 2), as well as more complex amides and a variety of esters.
Niacin and niacinamide are LIKELY SAFE for most people when taken by mouth. A common minor side effect of niacin is a flushing reaction. This might cause burning, tingling, itching, and redness of the face, arms, and chest, as well as headaches. Starting with small doses of niacin and taking 325 mg of aspirin before each dose of niacin will help reduce the flushing reaction.