The purpose of this study is to asses the efficacy and safety of Telmisartan depending on the use of an electronic therapy monitoring device (HelpingHand) in a real life setting and to asses patients compliance to the therapy with Telmisartan in relation to use of electronic therapy monitoring device.

Inclusion Criteria:

• Age over 18
• Untreated or ineffectively treated arterial hypertension

Exclusion Criteria:

• Cholestatic disorders and severe hepatic failure
• Allergy to Telmisartan
• Pregnancy and lactation period
• Unwillingness to participate in the study
• Inability to use the drug reminder device
• Unwillingness to use the drug reminder device

Primary care clinic hypertensive patients for whom physician decided to start the treatment with telmisartan