I never claimed that it happens outside of an acute overdose. I said it can happen, which is factually true. I also said there’s no way to guarantee an addict won’t take a large enough dose to deprive their brain of oxygen. It happens. Pretending it doesn’t is harmful. The cause of death for most opioid overdoses is literally cardiac arrest.

In the clinical sense, doses are administered to stay within safe limits, so supplemental oxygen is not needed.