Subacute thyroiditis is known as subacute thyroiditis. There is no definite conclusion about how long it takes to get better from taking Prednisone Acetate. Generally 4-6 weeks may be better, need to combine their own medical conditions and follow the doctor’s instructions to use medication. Prednisone acetate is a glucocorticoid, mainly used for the treatment of allergic and autoimmune inflammatory diseases, such as subacute thyroiditis, severe bronchial asthma, neurodermatitis and other conditions. There is no clear rule about how long to take prednisone acetate to get well, and the decision needs to be made according to the patient’s condition. Viral infections and hypersensitivity to prednisone acetate and other steroid hormones are contraindicated. It is generally contraindicated in patients with hypertension, active peptic ulcer disease, diabetes and pregnant women. Adverse reactions such as weight gain, swelling of the lower extremities, osteoporosis and muscle pain may occur after taking the drug. Patients with subacute thyroiditis need to take Prednisone Acetate in combination with their own medical condition and under the guidance of a doctor, with regular follow-ups to adjust the dosage of the drug.