Your GP is lying through his teeth. The British National Formulary (BNF) gives the list of medications that doctors can prescribe without any problems :
Whilst I think you are right, some unlicensed medicines are sometimes mentioned in BNF. They used to mention 50mcg oral B12 and some forms of vitamin D which were not licensed but, in context, that was clear. They also sometimes mention medicines being used outside their licence - which doesn't mean the medicine itself is unlicensed, but that it is not licensed for the particular purpose.
Lots of doctors don't know much about liothyronine (T3) and would be nervous to prescribe, either that or it is too expensive. Also the BTA states it is not recommended (for some unknown reason to me) when the fact is that it has proven very helpful to many patients.
Your GP is not telling the truth. It very expensive as the NHS purchasing policy is inefficient, but is definitely listed in the BNF - just generic liothyronine sodium. I suspect that he doesn't actually know what T3 is and thinks you are talking about NDT. Might be time to get a GP with a clue.
This is rubbish doctors can prescribe any medication even that which is 'unlicensed' just because it doesn't have a 'license' doesn't mean its beyond the pale!!
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