It will only help you digest, and it won't have any effect, but don't drink black tea with green tea. Just drink one at a time, and I'll tell you how to drink it. Lemon black tea, add 15g soft sugar and 1 slice lemon, and mix well. The tea juice is reddish, clear, sweet and sour, and very refreshing. Lemon black tea has the green acid of lemon and the mellow fragrance of black tea. If you want to drink good black tea, go to the website of Tea Mood.