First, vitamin K and vitamin E have antagonistic effects on vitamin K, which can inhibit platelet aggregation and reduce blood coagulation. Therefore, do not take it at the same time.

The second kind, digitalis. Vitamin E can enhance the cardiotonic effect of digitalis, and patients taking such drugs should use vitamin E with caution to avoid digitalis poisoning.

Third, neomycin. Drugs that affect fat absorption, such as neomycin, will affect the absorption of vitamin E in human body, and taking them at the same time may reduce the efficacy of both.

Fourth, estrogen. Long-term high-dose (more than 400mg per day) taking vitamin E, especially combined with estrogen, can induce thrombophlebitis, so we should be vigilant.

In addition, the measurement unit of vitamin E is mg in China and IU abroad, which is not equal. The conversion method is that 1mg is equivalent to 149IU. At present, many health care prescriptions on the market contain vitamin E, and their measurement units are not uniform. When taking vitamin products made in foreign countries, we should pay attention to the measurement units indicated in the instructions, and pay attention to the content of vitamin E in them to avoid repeated use.