Hi. After living in bed, thanks to the LDN and Mestinon I was able to go out at times to do shopping or walking, without PENE. Three weeks ago I started Famciclovir 250 mg. every 12 hours. I had 2 weeks without effects and this week is worse, I do not get out of bed. If the increase in fatigue is maintained how long is it reasonable to continue taking Famvir? Thank you very much for your help.