No. Poria gardenia tea will not have much effect on kidney. Poria gardenia tea belongs to natural food, mainly by chicory, gardenia, mulberry leaves, kudzu root composition, the biggest benefit is not produce dependence and no obvious side effects, often drink can protect liver and gallbladder, reduce the content of blood sugar in the body. Chicory has the effect of clearing heat and detoxification, diuretic and swelling, can treat damp-heat jaundice, nephritis and edema.