i am 45 yrs and diabetic for the past 10 yrs, it is under control, recently since 2 months i am on glimstar m 1 morning and evening and pioglitazone 15 mg in the after noon, i have some doubt about control, recently since 1 month i have the feeling of reduced libido,what should i do ,shall i ues viagra,apart from trying to control blood sugar levels