in me experience, Robaxin has no effect whatsoever either by itself or as a potentiator. im pretty sure that combining with H wont make the high any worse, i just dont think it will make it any better. i do hear though, that Robaxin is good for the leg cramps during opiate w/d, so maybe best just to save for a rainy day? im so confused as to why docs still prescribe this medicine, when really Flexeril, Soma and Zanaflex seem to me to be the only muscle relaxants that work. i do suggest if u try it, dont take a huge dose with H because it very well may be better at decreasing respiration than at muscle relaxation and that would be very dangerous. as awyas, start low go slow. be safe.
Fletchacet