There are many tasty snack ideas for diabetics; you just need to find the items you like. How about an apple with peanut butter? - weird but wondeful! A great alternative to peanut butter is almond butter, which is great on high-fiber crackers like ones made with rye flour. Or make your own snack mix out of a variety of nuts and dried fruit! Try grapes and feta cheese with balsamic vinegar.
If you feel that your medication is not working to control your diabetes, you may want to talk to your doctor about switching medications. There are a wide variety of different diabetic medications and what works for one person, may not work well for you. Or your dosage may need to be increased.