Libido Problems — Should I take 0.5mg Finasteride Daily or 1mg Every Other Day?

Hello Doc,
I have been on finasteride 1mg for a year and now I have switched to 1/4 Proscar. It has been working fine but I suspect little decreased libido and thinking to take half dose. I am not sure that taking finasteride 0.5 mg every day is better or taking 1 mg every other day is better or they both have the same effect?

I am asking this based on the fact that finasteride remains in the blood for only 24 hours so it means that if I am taking it alternate days then I am without finasteride for 24 hours. On the other hand, 0.5 mg finasteride is 80% as effective as 1 mg so taking 0.5 mg everyday would give me 80% cover everyday.

That is what my analysis is, but I want your view on this. Thank you very much for help sir!

I tell my patients who have sexual side effects to reduce the dose to one half a pill per day. That keeps levels of the drug in the blood stream most of the time and it should be more effective than 1 pill every other day.