I was diagnosed at 29. I'm still that age, and struggling to find the right medication for me. Tried 3x 500mg Metformin, then added 1x gliclazide which made me sick. Followed by Metformin with Sitagliptin, which caused shortness of breath (I'm also asthmatic).
Now my on 3 x 850mg metformin for a week until Friday. My GP is optimistic this will bring my blood glucose under control, but I've had sickness and diarrhoea since commencing the higher dose. Ho hum!