I have been reading more and more about it being and old time remedy for joint and muscle issues. Old timers used to lick the tip of a finger and dip it in the borax once a day... yum, yum.
They of course knew though that too much was not good either...
If there is a fracture or even chipped bones - take extra magnesium plus a lick of borax (lick one side of the top third of the index finger is your best guide. Your finger is in proportion to the rest of the body.) These 2 minerals together take the pain out of a fracture (old or new) within 2 days and helps the fracture to heal better.