Relieve
Relieve (verb) /rɪˈliːv/
to ease someone’s pain or suffering – alleviate – mitigate – lessen – ease – replace – dismiss – fire – release
It’s medically dangerous to take many painkillers to relieve pain.
Antonyms: aggravate, exacerbate
Noun: relief
Adjective: relieving
Adjective: relievable