Andy,
Your use of the word 'chemists' and not pharmacist lends me to believe that you are outside the USA.
Are you from Australia, or the UK?
It may be possible to get the proper CoQ10 and B12 from the internet.
You should be looking for Methyl-cobalamin in sub-lingual form, not Cyano-cobalamin oral tablets.
The gel form of CoQ10 is available too.
I get mine from www.iherb.com
Just a suggestion.