Originally Posted by QHriderKE
I guess... but then how can rubbing apple cider vinegar on my horses shoulder muscle act as a painkiller?
It isn't a painkiller per se, it's an astringent -balances ph levels in the skin, contracts, strengthens tissues so it will soothe much like a liniment (absorbine) would do, clean & clear would on your face, etc. Vinegar is also great for taking the sting out of a sunburn for the same reasons.
The iodine thing...I can't imagine how that would work. If that were true what wouldn't they all fall down drunk if you gave them a betadine bath?