Because the chemical components in tea will not only reduce or affect the curative effect of drugs, but also produce some side effects, so you can't take medicine with tea. In addition, under normal circumstances, drinking Chinese medicine is not to drink tea, because drinking tea will be an antidote. Tea contains a lot of tannic acid, which is easy to precipitate substances insoluble in alkaloids.
The active components of many traditional Chinese medicines are alkaloids, such as ephedrine and pseudoephedrine in ephedra, berberine in coptis and phellodendron, and Stemona. Other effective components such as Rhizoma Corydalis, Cirsium japonicum, Cirsium japonicum, Radix Cyathulae, Datura stramonium, etc. Mainly alkaloids. The decoction of these drugs is taken with tea, which will produce precipitation and affect the curative effect.
Extended data;
People who are not suitable for drinking tea
1, children should not drink strong tea.
Because when the concentration of tea is high, the content of tea polyphenols is too high, which is easy to react with iron in food, which is not conducive to the absorption of iron and is easy to cause iron deficiency anemia in children. Children can drink some light tea in moderation (one-third of adult tea). For preschool children, you can drink some rough tea, because the content of tea polyphenols in rough tea is low.
2. Patients with coronary heart disease should drink tea cautiously.
Caffeine and theophylline in tea are stimulants for patients with coronary heart disease with tachycardia, premature beats or atrial fibrillation, which can enhance heart function. Drinking a lot of strong tea will make the heart beat faster, which often leads to its onset or aggravation.
Therefore, such people can only drink some light tea; On the contrary, patients whose heart rate is generally below 60 beats/min should drink more tea, which is not only harmless, but also can improve the heart rate, which has the effect of cooperating with drug treatment.
People's Network-Can I drink tea when taking medicine? Four taboos of drinking tea
Reference source; People's Network-Can I drink tea with Chinese medicine? How to avoid the taboo of drinking traditional Chinese medicine?