The painkiller I take is Tylenol.

My house also uses Tylenol as the painkiller.

It's a painkiller I always carry as an emergency medication due to frequent headaches. Yesterday, I bought Tylenol again because of an unexplained headache.

Even if there are 8 pills, since you take 2 at a time, they will be gone after 4 doses.

I bought it yesterday and took two pills, and this morning I still felt heavy, so I took two more.

I'm a bit worried because I take headache medicine too often, but I've heard that taking it immediately when symptoms of a headache start to appear is effective.

I use it frequently because it seems to have fewer side effects.