Hi @Sad0210, 
We have information on the terazosin trial on our website which you can you can find here: Prostate drug shows promise in Parkinson’s | Parkinson's UK
This is information was updated in 2019, however, I will check in with our research team to see if there’s any updated information I can share with you. I’ll revert back to you as soon as I hear back from them. 
Best wishes,
Reah