Equi-tite has capaicin in it which is for athritis and heavy duty heat, even in the shower trying to wash it off, Blue-Heat has menthol and other crap in it that smells minty and gives a hot/cold sensation that is good for warming up better. B-fold had a link in a thread about the same stuff in the training section. Oh and these are all made for horses-which means it's same stuff lower cost. $10 for capacin(sp) 1ounce stuff at Kroger's when 16oz's cost 15 bucks for Equi-tite-not sure of the cost for Blue Heat but we have them in 1-Gal jugs laying around.