Question

H2 receptor antagonists differ from each other in ________?

		potency
		pharmacodynamic characteristics
		ability to influence the hepatic microsomal metabolism of other medications
		all the above

Answer 1

H2 receptors antagonist differ each other in ability to influence the hepatic micoromal metabolism of other medications..

Because among the H2 receptors antagonist cimitindine is differs in inhibition of cyp450 system which can result into various drug reactions..

Other than this, potency and pharmacodynamics characteristics are similar of these H2 receptors antagonist.

So, option 3 is correct...

I hope by the above description u got your answer..