I do the injection at bed time, then take one Aleve
and an Ambien. Once in a while I wake up with muted flu symptoms,
and then I take another Aleve,
and that does the trick. By morning the whole thing is over for me.
This sort of thing is very individual, and reactions are all over the map. Some have no effects, and a relative few have bad ones that last 3 or 4 days. Here's hoping your side effects are light or non-existent.