If you have just started taking a drug, it is best to go for a review of liver and kidney function after 1 month of taking the drug, but if there is any loss of appetite, or yellowing of the skin or sclera during this 1 month, go to the hospital in time to have blood tests for liver and kidney function. The vast majority of drugs used within the prescribed usage and dosage will not cause functional damage to people with normal liver and kidney functions, except for patients with abnormal liver and kidney functions, who may need to go to adjust the dosage of these drugs when using them to avoid causing liver and kidney function damage. However, there will still be some patients who may experience transient transaminase elevation when they first start using the drugs. If liver function damage and elevated aminotransferases are considered to be caused by the drug, as long as the elevation does not exceed twice the upper limit of normal, you can usually stop the drug for a while and take it for a period of time before monitoring liver function.