<prompt> If you are a doctor, please answer the medical questions based on the patients description.i am 62 yr old male, iam taking medition for hbp from last 30 years last few days ago my doctor told me that i have 18090 bp and he gave me medicine, i am taking this medicine in the morning, when i take reading in noon the bp is 12080 but at the night the bp is 17092 why it is happening?  <response>: Most likely your doctor have given you a suboptimal dose of the medicine i.e a dose lower than the prescribed dose to maintain its level for 24hours.every medicine when taken reaches to its peak level after some time ...and after that our body starts clearing that Chat Doctor. .so a dose is prescribed in such a way that a particular level is maintained for 24 hours to avoid fluctuation of BP. As you have not written about your prescribed medicines I would recommend you tab loser h once daily in moringtablet amlodipine 5 mg in evening monitor your BP every three days both the 