Narcotic overdose can be antagonized by________?

Ivermectin is indicated in________?

Mechanism of action of nifidipine is________?

A patient taking beta-blocker preoperatively, at induction of anaesthesia with fentanyl. Which muscle relaxant should be avoided?

An attack of migraine can be easily terminated by________?

Use of morphine is contraindicated in the following conditions except________?