My son in law is only 31 and has a herniated disc in his upper neck and he is in great pain. He has been told he can use muscle relaxants, are they are by prescription or are there any over the counter meds he can get ? He is seeing a chiropractor who said he could take them, but my son in law isn’t big into taking meds, but I thought if he took them, it might relax his neck and help him recover ? I’ve never had these issues ?