Pharmacology The H3 receptor agonist exhibits all of the following actions except A Inhibition of H1 receptors induced wakefulness B Increase in H1 mediated gastric secretion C Inhibition of H1 mediated bronchoconstriction D Negative chronotropic effect on atria 💡 Explanation The H3 receptor agonist exhibits all of the following actions except ✓ Correct Answer: B. Increase in H1 mediated gastric secretion