That's mainly for visitors. If you're a US resident, you can't just buy medicines abroad, unless of course we are talking about the "they won’t get caught" scenario.

US residents can buy medicines abroad the FDA link says personal importation is allowed as long as the medicines are FDA approved and are not being imported for commercial purposes. Now in the context of the original post maybe generic versions of Ozempic won't technically be FDA approved yet if the company that produces it has to wait for the US patent to expire.

The FDA approved version may be significantly cheaper to compete with the generic brands.

I also wonder if only the "active ingredients" need to be FDA approved, and the packaging is irrelevant?

Of course you can buy medicine abroad and legally bring 90 day doses.

More over, you can order and ship medicine, including ozempic and zepbound, using American prescription from Canadian online pharmacies. For some drugs it’s quite cheaper than paying American prices.

Sounds like an opportunity for non-residents.

The major legal question for generic Ozempic imports will be, did Novo Nordisk buy Trump coins or donate to the White House ballroom?