Suffering from diabetes for long. Taking becozil, calciam,thyronorm, ecospirin. Any side effect?

Hi welcome to Health care magic forum. As it is so long you are suffering from diabetis and you need some bcomplex supplements, there is no harm in taking neurobion injection, periodically.
I also advise you to be in touch with your doctor and get your blood sugar tested at least once in an year. Try to have a balanced diet, with green leafy vegetables, pulses, sprouts, milk, egg, meat which supplies suffecient iron and proteins for healthy maintenance of the body.
Avoid taking flushy fruits like banana, mango, custared apple, and high calorie foods like sweets Wishing for a comfertable maintenance of health and thanks for calling.

Hi,
Welcome to HCM,
You have long standing Diabetes >20 years, Neuropathy for last 7 years,and also Hypothyroid state your treatment is as per your disease the only thing is not clear that your blood sugar level is well controlled or not, you can take oral vitamin B12 supplementation with B complex and if it is required even injection may be taken but take care that proper disposables are used because injection may cause abscess.
If you have symptoms of neuropathy there are other drugs also to take care of neuropathy.
Please take these injection with consultation of Physician and not by yourself.
Please check FBS,PPBS,and HBA1c,TSH periodically to keep your diseasae under controll.
Please take care
Good Luck.