What are the characteristics of 2nd generation h1 receptor antagonists?
What are the characteristics of 2nd generation h1 receptor antagonists? Correct Answer Selective for peripheral H1 receptors and opposed to CNS receptors
These are the newer drugs and they are much more selective for the peripheral H1-receptors involved in allergies as opposed to the H1-receptors in the CNS. Therefore, these drugs provide the same relief with many fewer adverse side effects.