Hi! My brother was diagnosed with ALS last Jan, right before the shutdown. His neurologist put him on Riluzole. Another doctor within the same group diagnosed him with ALS/PSP and put him on Carbidopa/Levodopa. He has also been on Radicava for about a year. Now the first doctor is saying he actually agrees with the second doctor on ALS/PSP. Within a year, my brother's condition has progressed from being able to walk to now practically bed bound and full assist level of care. I am wondering why he was prescribed Carbidopa/Levodopa, which seems to be a pretty powerful drug for Parkinsons. We have since seen a 3rd doctor who feels he has ALS and not PSP and put him on baclofen and TUDCA. He is currently on quite a bit of drugs and I have concerns about drug interaction but I am also worried if he were to stop taking any of the meds, could his illness get worse? I feel both ALS and PSP are tough diagnosis to make and I suppose doctors make educated guesses too. Has anyone heard of Parkinson's drugs being used to treat ALS?