DEAR DR. ROACH: I have been prediabetic for around 13 years and had been able to keep it that way though diet and exercise -- no medications for it. But the real issue now is that I have developed congstive heart failure, which probably sounds worse than it really is. However, the medications I have been given for it (Lasix, spironolactone, carvedilol) from my cardiologist and finasteride for prostate issues have totally ruined my glucose numbers. I used to see around 100 in the mornings. I almost never got to the 120s. Now after a couple months on those drugs I am seeing closer to 150 in the morning. After meals the numbers are running nearly 100 points higher than without them. My doctor tried to get me a drug, but that was so expensive as a copay that I had to tell the drugstore I couldn’t afford that, which I can’t. When I google what to do when your glucose is affected by medication, I get all kinds of sites, but none really seem to have an alternative to the regimen I am now having to take. So, to fix one issue, I fear the diabetes I have worked so hard to contain is going to become a serious problem. What do I do? -- L.H.