How can we help?

You can also find more resources in our Help Center.

Adrenergic Antagonists

STUDY
PLAY
Prazosin
alpha1>>>alpha2. Good antihypertensive.
Phenoxybenzamine
alpha1>alpha2, irreversible and long duration.
Phentolamine
alpha1=alpha2, older drug and not used much anymore.
Tolazoline
alpha2>>alpha1. Reverses a2as.
Labetalol, Carvedilol
beta1=beta2>=alpha1>alpha2. Used in heart failure.
Metoprololol, Acebutolol, Atenolol
beta1>>>beta2, mainly affects heart.
Propanolol, Timolol
beta1=beta2, don't want to antagonize beta2 (b/c stop bronchodilation) so not as useful.
Butoxamine
beta2>>>beta1