No, but the pharmacies hold only a little bit of power over that stuff. If the single payer health plan won't cover x medicine because y is cheaper and just as effective, x is rarely going to be ordered. X being an equal price to y means x might be some doctor's first line treatment.

> No, but the pharmacies hold only a little bit of power over that stuff.

We're not talking about pharmacies; they don't enter the picture here at all.

> If the single payer health plan

Again, almost no country uses a single-payer health plan for pharmaceuticals, so this is isn't relevant.