In reply to mypyrex:
Hi
I'm a pharmacist, so may be able to help...
Without knowing what drug it is, it's difficult to know the answer. If the doctor prescribes the Pfizer brand, then the pharmacy have to dispense the Pfizer brand. If Boots order the Pfizer brand from the wholesaler, then that's what they'll get.
Using the drug atorvastatin as an example: if the doctor prescribes "atorvastatin tablets" then Boots will order "atorvastatin tablets" from a wholesaler - these could be any brand. If the prescription is for "Lipitor tablets" (the Pfizer brand) then Boots will order and dispense "Lipitor tablets".
Sometimes the same brand will be reformulated - for various reasons (manufacturing, stability, change in manufacturer, etc etc etc). These changes have to be approved by the licensing authorities (i.e. the MHRA).
The actual drug will be the same: the difference may be in the excipients (the other bits and bobs that go into making a tablet/capsule). Sometimes people are sensitive/allergic to an excipient. Without having the list of excipients from brand(s) that do or don't suit Mrs Pyrex, it's difficult to start finding another suitable option. However it's worth a try.
Message me if you'd like to discuss more specifics in confidence.
Becky
Post edited at 22:49