Eh... there aren't "no" side effects or long term issues. I was warned that modafinil/armodafinil has the potential to burn out GABA receptors after long term (more than 6 months) use and the meds would have diminishing returns.

The solution is to take the meds every other day and give the brain a break or save your dose for when you really need to be "switched on."

That being said, if your heart/kidneys/liver can take it, the modafinil family is amazing for just about any fatigue, even if it's a direct result of viral syndrome.