Iam A Diabetic,BP Cholestrol And Oesteoporosis Patient Doctor Prescribed Gluformin

iam a diabetic,BP cholestrol and oesteoporosis patient doctor prescribed gluformin 500,etogecic-er,tazloc-40 and alsonerveup od. last one week iamusing these all tablets . Last two days there is swelling above the joints of my hands sometimes it is red in colour. what is reason? is there any side effect using the above medicine?