The difference between amlodipine benadryl type 1 and type 2 is that the dosage of the drug is different and the effect of lowering blood pressure is different. Amlodipine Benadryl belongs to the joint preparation, the mechanism of action of amlodipine is to inhibit calcium ion inward flow, Benadryl’s role is to inhibit angiotensin-converting enzyme inhibitor, the two drugs used in combination can increase the effect of blood pressure lowering, most often used in the treatment of moderate or above high blood pressure. Amlodipine Benadryl type 1 contains Benadryl 10mg and Amlodipine 2.5mg, and type 2 contains Benadryl 10mg and Amlodipine 5mg., the dose of the drug in type 2 is larger than that of type 1, and it can be changed to type 2 orally for patients who have unsatisfactory effects of oral type 1 plus. Adverse reactions of Amlodipine Benadryl include lower extremity edema, cough, flu-like symptoms, dry stools, nausea, vomiting, etc. It is contraindicated for patients who are allergic to the drug components, pregnant lactating women, severe renal insufficiency, and hypotension. Amlodipine Benadryl for the treatment of high blood pressure, the appropriate dose should be selected under the guidance of a physician.