Drug: labetalol
Molecular target(s) of the drug?
Is the drug a receptor agonist? If yes, what
receptor(s)?
Is the drug a receptor antagonist? If yes, what
receptor(s)
Does the drug cause vascular smooth
muscle contraction or relaxation?
Will the drug inhibit a vascular smooth muscle
contraction induced by phenylephrine?
If yes, the action via which one of the following three
mechanisms:
(1) the drug inhibits the binding of phenylephrine to its
receptor; OR
(2) the drug inhibits the signal transduction...