How Vitamin A interacts with orlistat

Interaction type: Interactions

Interaction rating: Proven

Orlistat has been reported to decrease vitamin A levels in the body. Supplementation with the affected nutrient may be necessary. (1) (2)


  1. Xenical (orlistat), Product Prescribing Information. Roche Laboratories, Inc. Nutley, New Jersey. Sep2000.
  2. View Abstract: Melia AT, Koss-Twardy SG, Zhi J. The Effect of Orlistat, An Inhibitor of Dietary Fat Absorption, On the Absorption of Vitamins A and E in Healthy Volunteers.J Clin Pharmacol. Jul1996;36(7):647-53.