Vitamin E is fat-soluble. In order to facilitate absorption, it is recommended to take it immediately after lunch or dinner. Vitamin C is a water-soluble vitamin and is best taken on an empty stomach.
Contraindications for taking vitamin C:
1. Vitamin C cannot be taken in large amounts with shrimps, crabs and other crustacean seafood, as it will produce arsenic trioxide (arsenic), which may lead to poisoning. (This article is a rumor on the Internet, and the "large amount" means that you need to take about 50 kilograms of vitamin C-rich fruits and about 200 kilograms of seafood at the same time within 24 hours).
2. People with poor kidney function should not take more vitamin C. Long-term overdose of vitamin C may cause hyperacidity, gastric reflux, and even urinary system stones. Especially people with kidney deficiency should take less vitamin C.
3. Do not eat animal liver when taking vitamin C. Vitamin C is easily oxidized. If it encounters copper ions, it can accelerate the oxidation rate. Animal liver contains high copper content. If animal liver is eaten while taking vitamin C, vitamin C will be rapidly oxidized and lose its biological function.
4. Do not take ginseng while taking vitamin C.
5. The combination of vitamin C and folic acid will also weaken their respective effects. If it must be used to treat anemia, it can be used intermittently and cannot be taken at the same time.
Contraindications for taking vitamin E:
When using vitamin E with the following five drugs at the same time, it must be done under the guidance of a doctor and never taken by yourself.
1. Aspirin: Both vitamin E and aspirin can reduce blood viscosity, so when vitamin E and aspirin are taken at the same time, the doctor should adjust the patient's dosage according to the specific situation.
2. Vitamin K: Vitamin E has an antagonistic effect on vitamin K, and can inhibit platelet aggregation and reduce blood coagulation. Therefore, please do not take vitamin E at the same time before surgery or when taking anticoagulant drugs.
3. Digitalis: Vitamin E can enhance the cardiotonic effect of digitalis. Patients who use such drugs should use vitamin E with caution to avoid digitalis poisoning.
4. Neomycin: Drugs that affect absorption, such as neomycin, will affect the body's absorption of vitamin E, so taking them at the same time may reduce the effects of both drugs.
5. Estrogen: Taking vitamin E in large doses for a long time (more than 400 mg per day), especially in combination with estrogen, can induce thrombophlebitis, so you should be vigilant.