The effects of some drugs can change if you take other drugs or herbal products at the same time. This can increase your risk for serious side effects or may cause your medications not to work correctly. These drug interactions are possible, but do not always occur. Your doctor or pharmacist can often prevent or manage interactions by changing how you use your medications or by close monitoring.To help your doctor and pharmacist give you the best care, be sure to tell your doctor and pharmacist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products) before starting treatment with this product. While using this product, do not start, stop, or change the dosage of any other medicines you are using without your doctor's approval.Some products that may interact with this vitamin include: acitretin, alitretinoin, bexarotene, cholestyramine, isotretinoin, tretinoin, other products that contain vitamin A (such as multivitamins), warfarin.Avoid taking vitamin A at the same time as you take neomycin, orlistat, and mineral oil. If you take any of these medications, separate your doses from your dose of vitamin A by at least 2 hours.This document does not contain all possible drug interactions. Keep a list of all the products you use. Share this list with your doctor and pharmacist to lessen your risk for serious medication problems.