Oseltamivir granules generically known as oseltamivir phosphate granules can be taken by adults. Oseltamivir Phosphate Granules, which are white or off-white granules, are mainly composed of oseltamivir phosphate. It is clinically used for the treatment of influenza A and B in adults, children aged 1 year and older, and also for the prevention of influenza A and B in adults, adolescents aged 13 years and older, so it can be taken by adults. Oseltamivir phosphate granules are prohibited for those who are allergic to this product, and some patients may experience adverse reactions such as erythema multiforme, dermatitis and herpes major after taking it. A very small number of patients may develop pancreatitis, angioedema and symptoms such as elevated eosinophils, leukocyte drop and hematuria, at which time the drug should be immediately discontinued and consult a doctor. It is recommended that patients take oseltamivir phosphate granules under the guidance of a doctor, and if you are taking other drugs, you should talk to your doctor in advance to avoid drug interactions.