Hi, I Have Been Taking Torvate Chrono 500 Twice A

Hi, I have been taking Torvate Chrono 500 twice a day for 2 years now. This was prescribed to me after undergoing Crainotomy. I have a tendency of forgetting and loss of words in my sentences. All this while I thought it was because of my accident and brain surgery but reading some of the comments I realise the case of side effects. Also now/for the past few months the side effects seem to be reflecting in my sex life. I go soft very easily or am unable to get a hard-on sometimes. And cause it happened a few times, every time I'm involved in sex my thoughts keep wavering. Please advise??