We can see from this graph that before patent expiry something forced the genericised form of the brand (Neo-Mercazole Tabs 5mg 100) to a peak of £91.04 on average, with the drug tariff reaching £109 in October 2015.
However, the launch of generics in August 2015 and competitions between generic manufacturers has forced the price down, reaching as low as £3.84 in September 2020 but currently at £4.28 in December 2020. This emphasises how effective the UK generics industry is in keeping generic prices low.
At the moment there is no sign of any further price rises, but it will be interesting to see if Carbimazole Tabs 5mg 100 slips into a cyclical pattern in the future. The drug tariff seems to be following the UK Average price of this drug very closely.
The long term history came from BPPI and WaveData Live which can be accessed from www.wavedata.co.uk.