Induction of anesthesia usually requires the following:

Importantly, the volatile anesthetics (sevoflurane, desflurane or isoflurane) will provide 3 of the 4 components of general anesthesia (are not analgesics).

Additionally, small doses of midazolam (for anxiolysis/sedation) and fentanyl (to blunt stimulation caused by laryngoscopy) are also often given during or right before induction.

All these agents are given during pre-oxygenation (as once induction is complete patients will become apneic).