Taking drugs to injure the kidney if timely stop taking, some people can recover, but there are people due to the long time of taking drugs and cause irreversible damage to kidney function, it is more difficult to recover, in addition, certain drugs containing aristolochic acid, after taking, kidney function basically can not be recovered. If the drug as a semi-antigen and cause interstitial nephritis and other diseases, this situation after timely withdrawal of drugs, and active treatment, drug damage can generally be restored. If the drug crystallizes in the kidneys, crystalline nephropathy may also cause damage to the kidneys, and the renal damage may also be recovered by stopping the drug in time. However, for those who have been taking the drug for too long, chronic renal insufficiency and other conditions may have occurred, and generally irreversible damage to renal function has occurred, and recovery is generally more difficult. If you take drugs containing aristolochic acid, since the drug can bind to chromosomes after entering the body, the damage in this case is greater and recovery is basically impossible. Therefore, patients with impaired renal function after taking medication need to consult a regular hospital in time, and under the guidance of the doctor to clarify the specific reasons for active treatment.