Hydralazine

Key points

• In heart failure, it eases the workload on the heart by improving blood flow through widened vessels.
• It acts by limiting calcium movement into the smooth muscle of blood vessel walls, stopping them from tightening.
• It is typically added to existing treatment when hypertension is not adequately controlled by other therapies alone.

What is Hydralazine?

Hydralazine belongs to a class of medications known as vasodilators. It works by relaxing the smooth muscles located in the walls of the blood vessels. This relaxation allows the vessels to widen, which reduces resistance to blood flow and lowers blood pressure throughout the body. Because it directly impacts vascular tone, it is a common choice for managing cardiovascular health.

What Hydralazine is used for

This medication acts to manage various cardiovascular conditions. It is commonly utilised in the management of Hypertension where other therapies might require the addition of a vasodilator. Additionally, it is used for the management of Heart Failure, where it can improve blood flow and output to reduce the workload on the heart.

How does Hydralazine work?

Once systemic absorption occurs, the medication interferes with the flow of calcium ions within the vascular smooth muscle. By preventing these muscles from contracting, the medication keeps vessels open. This process reduces the pressure that the heart must pump against, which can alleviate strain and improve general circulation.

Hydralazine brands and forms

The medication is available in tablet form, which is intended for oral administration. Patients choosing between products in the Heart & Blood Pressure category often look for consistency in their daily management routine. As this is a generic medication, the tablets contain the same active compound regardless of the product label.

Further reading

• Hydralazine: MedlinePlus Drug Information
• Hydralazine - StatPearls - NCBI Bookshelf