Amlodipine with Valsartan

How it works

Amlodipine relaxes vascular smooth muscle by blocking L-type calcium channels to cause arterial vasodilatation, while valsartan blocks the angiotensin II type 1 receptor to reduce vasoconstriction and aldosterone-driven sodium retention; the two actions lower blood pressure through complementary pathways.

Prescribing in practice

• The valsartan component is contraindicated in pregnancy and can cause hyperkalaemia and renal deterioration, so avoid in women who are or may become pregnant and use caution with renal impairment or other renin-angiotensin agents.
• Amlodipine commonly causes dose-related ankle oedema that does not respond to diuretics, which can limit tolerability.
• Combination products are intended for patients already needing both classes or not controlled on one, rather than as initial therapy in everyone.

Monitoring

Monitor blood pressure, renal function and serum potassium, particularly after initiation or dose changes of the valsartan component.

Counselling the patient

• Stop the tablet and contact your prescriber promptly if you become pregnant.
• Report significant ankle swelling, dizziness or fainting.
• Rise slowly from sitting or lying, especially when starting treatment.

Evidence & guidelines

Calcium-channel blocker plus angiotensin receptor blocker combinations align with NICE hypertension guidance, which supports step-wise combination of these classes.