If your mother is not suffering from any other chronic disease which is causing symptomatically high blood pressure, you should focus on improving her diet with the restriction on intake of salt, sugar, milk and processed packaged foods and allowances of wholesome grains, fruits and vegetables. You should get results in 3-4 weeks. I have googled two photos and pasted below to give you glimpse of the DASH diet which is recommended for the hypertensive patients.

