One thing that we all learn about PCa treatment is that not everyone responds the same way to every treatment. Makes it all so confusing and frustrating.
Maybe, you are reacting to the cumulative effects of 18 months of Cialis? Maybe not?
I've been on it for 4 years and 6 months, nearly 5, no side effects, apart from the first few weeks. And then the usual, warned of, leg aches, head aches etc. FOR ME it was worth working through.
Keep all your options open mate. Ask about every possibility.
Above all, enjoy Christmas.