Lodinexin, also known as Benadryl hydrochloride, is used for hypertension, congestive heart failure and is mainly indicated for the treatment of mild and moderate hypertensive disorders. The dosage is 10-20mg 3 times a day for hypertensive patients when administered orally. If the decrease in blood pressure is not satisfactory, it can be combined with another anti-hypertensive drug, such as the diuretic hydrochlorothiazide, the maximum recommended daily dose is 40 mg, if there is severe renal failure, the initial dose is 5 mg. in patients with congestive heart failure, the initial dose is 2.5 mg, which can be gradually increased to 20 mg daily, common dizziness, fatigue, gastrointestinal discomfort, rash, itching, flushing, frequent urination, these adverse reactions.