There is no such thing as “taking three months’ worth of pills for gray hair”. The dosage cycle is related to the patient’s own condition and cannot be generalized. The main reason for this is the fact that it is not a good idea to take a look at a lot of the products that are available on the market, but it is a good idea to take a look at a lot of the products that are available on the market. According to the instructions of the drug, take the drug for two weeks or take the drug during the symptoms did not improve, or symptoms worsened, or the emergence of new serious symptoms, you should immediately stop taking the drug and go to the hospital, the specific length of time to follow the doctor’s instructions to standardize the use of medication. Allergic to the product is prohibited, allergic persons should be cautious. Children must be used under adult supervision. Avoid spicy and stimulating food during the medication. If you have symptoms, you should go to the hospital, under the guidance of a physician to standardize the use of medication, do not self-medication or self-adjustment of the duration of medication.