Urea nitrogen 7.2mmol / L whether you need to take drugs should be analyzed according to the cause of the disease, if it is due to physiological factors generally do not need to take drugs, if it is due to pathological factors, you need to follow the doctor’s instructions to take drugs. 1. Physiological factors: urea nitrogen 7.2mmol / L is high, such as physiological, common causes are severe dehydration, high protein diet, etc., generally need to actively replenish the water, limit the high protein diet, etc., the blood urea nitrogen can generally return to normal, without special treatment. 2. Pathological factors: urea nitrogen 7.2mmol / L is high, common pathological factors are various primary glomerulonephritis, interstitial nephritis, renal tumors, etc., there can be elevated blood urea nitrogen, need to comply with the doctor’s instructions to actively take medication, such as glucocorticoid therapy, commonly used drugs are methylprednisolone, etc., but also to take immune suppressant, such as cyclophosphamide, cyclosporine and so on. When the blood urea nitrogen is elevated, it is recommended that the patient consult a doctor in a timely manner, under the guidance of the doctor to clarify the cause, and comply with the doctor’s instructions to actively treat, so as not to delay the condition.