What should you know about dog blood pressure medication?

[Hypertension](/conditions/hypertension/) can strain blood vessels and organs even when you feel well. Different medicines relax blood vessels, reduce the amount of fluid in circulation, or slow the heart, depending on your health and other treatments. The aim is controlled pressure without troublesome effects. Medicine may reduce future risk linked with [Stroke](/conditions/stroke/), [Transient Ischaemic Attack](/conditions/transient-ischaemic-attack/), or [Angina](/conditions/angina/), but it does not replace lifestyle advice or monitoring.

Take the medicine exactly as prescribed and keep a record of readings and symptoms. Do not stop it suddenly or double a missed dose unless a clinician gives that instruction. Ask before using decongestants, anti-inflammatory painkillers, supplements, or another person’s medicine, since some products can alter blood pressure or interact with treatment. Your clinician may arrange blood tests or [Ambulatory Blood Pressure Monitoring](/treatments/diagnostics-and-screening/ambulatory-blood-pressure-monitoring/) to understand how pressure changes through the day. More detail is available in [Blood Pressure Medication](/treatments/medical-management/blood-pressure-medication/).

Seek emergency help for sudden weakness or numbness on one side, trouble speaking, severe chest pain, fainting, or severe breathlessness. A sudden severe [Headache](/symptoms/headache/) with confusion, vision change, or neurological symptoms also needs urgent assessment. Contact your prescriber promptly for repeated dizziness, falls, swelling, a very slow pulse, or symptoms that began after a dose change.

Ask what your target readings are, when to take each dose, and what to do if you miss one. Check whether you need home readings, blood tests, or a medication review. Discuss pregnancy, kidney disease, diabetes, allergies, and all non-prescription products before treatment is changed.