Ask a doctor or pharmacist before using vitamin A with any other medications, especially:
orlistat (alli, Xenical);
birth control pills;
an antibiotic--doxycycline, minocycline, sarecycline, or tetracycline; or
a retinoid--acitretin, isotretinoin, tretinoin, Retin-A, Soriatane, and others.
This list is not complete. Other drugs may affect vitamin A, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.
 Vitamin a drug interactions (more detail)
