It is quite strange that glimaday was causing burning on your feet.It is not associated with such types of sytoms.
Similarly PIOPAR and ISMET don't cause itching or boils
Probably it is just a co incidence.
You must take MULTI vitamins
Multivitamins act as anti oxidants and should be taken regularly.
Make it a point that you control your sugar levels meticulously to avoid future vascular complications.
Do regular exercises and take proper diet control measures.