Standing in the chemist, waiting and waiting for a prescription that had gone missing, I asked the Pharmacist (who looked about 14), who was just standing around, whether they dispense many prescriptions for Liothyronine.
"No, thats old fashioned and does not work. Drugs like that are being discontinued".
I was a bit fed up as I had waited a while and rather more sharply than I wanted replied that it is not a drug, it is a hormone that is circulating in your body right now, you would be dead without it. At that point he sidled away and they found the prescription.
Realistically he had probably been qualified a few years, and he knew it was for thyroid. I wonder if that is what they are taught now?