Basically, my question is if you experience side effects right away on finasteride, what percentage of people have them go away and is there an increased chance of prolonged ED. Thanks for your help!

Some people see the side effects within the first week of taking finasteride and some men see the side effects subside over a few months. I do believe that the long-term sexual side effects may be real but it is difficult to filter between those people who see profit from filing a legal action against the drug company and make up the complains and real complaints by ordinary men not interested in lawsuits. In some countries where there is no significant risk of class action lawsuits against the drug company, the reports of permanent sexual side effects are not present. If they are real, they are very rare, I suspect significantly less than 1%.