The best time to drink tea is after dinner, because drinking tea on an empty stomach will hurt the body, especially for those who don't often drink tea, it will inhibit the secretion of gastric juice, hinder digestion, and even cause palpitations, headache and other "drunk" phenomena. In addition, when you drink tea at night, you should put less tea and don't make it too thick.
It should be noted that do not drink overnight tea. In addition, the general summer temperature is higher, tea should not exceed 12 hours. Also can not use the thermos cup to make tea, to avoid the loss of nutrients.
Berberine and tea should not be taken at the same time. Drinking tea should be prohibited within 2 hours before and after taking berberine. Tea contains about 10% tannin, tannin is an alkaloid precipitant, which can combine with alkaloids in berberine to form insoluble tannate precipitation, which reduces the efficacy of berberine. Drinking tea on an empty stomach will dilute gastric juice, resulting in reduced digestive function, which will lead to panic, dizziness, headache, fatigue and other phenomena.