i've had bad muscle pain very widespread thru my body for many yrs.
i take lyrica for neuropathic pain.
my pain dr also put me on amrix. it's a muscle relaxer. i think it's a long acting type of flexeril.

my legs are always tight tho. especially if i've been doing a lot during the day.
i take darvocet for general pain. i get a deep tissue massage every wk.

i hope your dr can come up with something to help you.
pain is no fun.