In a message dated 12/19/2009 2:31:42 P.M. Eastern Standard Time,  
day.sut...@gmail.com writes:

Please be careful with DMSO for animals.  It may contain impurities that 
the FDA considers "safe" for animals (they have  no way of complaining)
Use purified DMSO either reagent grade  of HPLC grade
Frank



I've used good old " horse grade DMSO"  for years  --internally & 
externally, & it is fine... As far as trusting the FDA  for anything---- I"ll 
stick 
to the "good stuff " that is  made for  animals...Lois