I think you overestimate the influence of the FDA around the world.

To point an example, the FDA approved oxycodone for oral administration (and trusted patients with the dosage of a strong opioid). Meanwhile in most European countries it's rarely prescribed, and often only given IV/IM form (i.e. in the hospital).

Anecdotally, a typical post in "Expat in XXX" groups on FB involves Americans shocked that their medicine isn't approved abroad, and looking for alternatives.

> To point an example, the FDA approved oxycodone for oral administration (and trusted patients with the dosage of a strong opioid). Meanwhile in most European countries it's rarely prescribed, and often only given IV/IM form (i.e. in the hospital).

So you take the exception to make a case? Around the world most regulatory bodies look at what the FDA has approved and take it from there to elaborate their own opinions. Oxycodone was an exception because it's an opoid and most countries knew better than to accept such classes of drugs because of well known experiences with such drugs in the past.