Melody,
the drug in clinical trials is ranirestat an ARI (aldose reductase inhibitor). I believe it's in PhaseIII now - originally developed at Dainippon Pharma if memory serves me correctly. I think Flsun01 originally posted about it but the Jack Daniels=tramadol bioequivalence study could be fogging my memory.
Do post what you hear - maybe something good.
alkymst