Interactions

Possible interactions include:

• Anticoagulants. Oral use of vitamin A supplements while taking these medications used to prevent blood clots might increase your risk of bleeding.
• Bexarotene (Targretin). Taking vitamin A supplements while using this topical cancer drug increases the risk of the drug's side effects, such as itchy, dry skin.
• Hepatotoxic drugs. Taking high doses of vitamin A supplements can cause liver damage. Combining high doses of vitamin A supplements with other drugs that can damage the liver could increase the risk of liver disease.
• Orlistat (Alli, Xenical). This weight-loss drug can decrease the absorption of food sources of vitamin A. Your doctor might suggest that you take a multivitamin with vitamin A and beta-carotene while taking this medication.
• Retinoids. Don't use vitamin A supplements and these oral prescription drugs at the same time. This could increase the risk of high vitamin A blood levels.