Drinking tea has a certain effect on taking medication, this issue can not be generalized, because certain components in tea have a very strong effect on certain drugs. Tea is rich in tannic acid, tannic acid for anti-inflammatory drugs and antibiotics, directly reduce the pharmacokinetics and pharmacokinetics, will make the antibiotics appear secondary failure, such antibiotics include penicillin, cephalosporin, azithromycin, ofloxacin and other drugs, so drinking tea should not be taken when the above drugs. After drinking tea for Chinese medicine will also make the efficacy of the drug will be reduced, or cause secondary failure of drugs, such as drugs to improve the blood supply to the heart, such as salvia, safflower, rhodiola and other drugs, after drinking tea can never be taken, but for the western class of antiviral drugs, 15 minutes after drinking tea that can be taken, such as the western drug ribavirin, ganciclovir, etc. There are contraindications to taking iron and blood supplement drugs and tea at the same time, for example, red source and other iron and blood supplement drugs, absolutely not to be taken at the same time as tea.