How long it takes for hyperthyroidism methimazole tablets to work cannot be generalized, but the condition usually improves in about 2 to 6 weeks of taking the medication. Methimazole tablets are antithyroid drugs that can be used to treat various types of hyperthyroidism. How long it takes for hyperthyroidism patients to see the effects of oral methimazole tablets needs to be determined according to the patient’s condition, usually taking the drug for about 2 to 6 weeks the patient’s condition will improve. Some patients taking methimazole tablets may appear rash, itching, nausea, vomiting and arthralgia, myalgia and other adverse reactions. Note that breastfeeding women are prohibited, patients who are allergic to the product, patients with cholestasis are prohibited. The specific use of drugs must be carried out under the guidance of a doctor, to avoid unauthorized use of drugs on the body to cause serious effects.