My blood presure goes up somtimes even though i take medication for it. what causes this?

Sometimes medication: is not absorbed well and sometimes the dietary intake of things like salt can adversely affect the ability of a drug to control your BP. Sometimes you need multiple doses throughout a day rather than once a day dosing. These are all things your health care provider should be discussing with you. Make an appointment with him/her to discuss your concerns.

Many things: Many things can increase blood pressure, including stress, salt, alcohol, stimulants, and lack of physical activity. Many other factors can have longer-term effects, too. Elevated blood pressures require adjustments to treatment. People under 60 years of age should target a blood pressure less than 140/90. This means a systolic blood pressure < 140 AND a diastolic blood pressure < 90.