There are different classes of vasodilators used today in the current clinical practice, and each has different actions on the coronary arteries and
The heart doesn't have to pump as hard
Vasodilators, as their name imply, treat hypertension by causing the smooth muscle walls of blood vessels to relax, thus dilating the vessel
2011 Sep;13 (9):690-2
PMID: 6761057
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Although minoxidil is extremely effective, its usefulness is limited by its tendency to increase the pulse rate and to trigger salt and water Mechanism of Action
There are many types of vasodilating medications, including: Nitroprusside, which is used mostly in emergencies and is administered through an IV Secondary effect is peripheral vasodilation
Viagra is an example of a drug that effects vasodilation and isn’t primarily used for high blood pressure treatment
A number of medication classes are effective for initial and subsequent management of hypertension: Adrenergic modifiers
Direct vasodilators
Hypotension may be profound and life-threatening; it results from peripheral vasodilation, bradycardia, and decreased ionotropy
Some of these remedies should not be taken with blood pressure lowering medications
For example, drugs that dilate resistance vessels (arterioles) cause a decrease in cardiac afterload (the force the heart works against to pump blood)