GI absorption of niacin in humans.
By using the GI tube technique, niacin was shown to be equally well absorbed from the stomach and the upper small intestine. The maximum plasma niacin concentrations occurred 10-20 and 5-10 min, respectively, after instillation. Thus, the physiological prerequisites for a physically retarded niacin preparation were established.
D005753:Gastric Mucosa / Q000378:metabolism; D006801:Humans; D007408:Intestinal Absorption; D007421:Intestine, Small / Q000378:metabolism; D007441:Intubation, Gastrointestinal; D008297:Male; D009539:Nicotinic Acids / Q000097:blood / Q000378:metabolism*; D013997:Time Factors
D009539:Nicotinic Acids