Propecia/Finasteride/Proscar available in pharmacies?

    1mg pills for hair, not the 5mg for prostate, HCMC.

Looks to be available. I suggest you contact the distributor, here.

09 1800 6928 - Call Center For Foreigners. Outside Vietnam (+84) 918 006 928

Would prescription likely be needed? It is in the States and probably most countries.

If you currently have a prescription, bring it. Contact the number above for verification as to whether a local doctor's prescription will be necessary.

That said, many medications are available here at local pharmacies without prescription where one would be needed in the US.

And how would one go about obtaining that locally? A small clinic with an English-speaking doctor perhaps?

Yes, at a cost of course. I've purchased, for myself and others, all manner of controlled medications  here without a prescription.

There are posts here from 2017 and earlier, mentioning Prorid brand, no prescription, $1-.75/pill.

About $1 USD each, here.

Thank you muchly,
R   
    -@Roy McRoy

You're welcome (bigly )

@Aidan in HCMC

thank you for a detailed response!