So I just came back from the vet because my dog was having issues with his urination. Anyways, the doctor things hes having urethra spasms and a urinary tract infection.

He prescribed him with prazosin 1mg as well as UTI antibiotics.
Now, the vet said the prazosin is typically used for lowering blood pressure, and heart related conditions as well as urethra spasms. He said that he might pass out or go unconscious if it drops his blood pressure too low.

I am SO worried about giving Him the prazosin. :( anyone ever had to use this or given it to a pet?