I talked to my doc about DMSO dangers (after reading your post) (I met with him yesterday)... he told me Rx grade DMSO is pure and that pro football players lather themselves up almost daily and he has a lot of clients (it's a TRT clinic) who use it (though not the way Zyx had suggested, which he thinks is a great idea and if it works for me, he's gonna do it himself --Nno one enjoys shots.) and none of his patients have ever had an issue with it pulling in some virus or harmful molecule. He said you'd have to be unclean to get that type of issue, then asked me if I planned on rolling around in the dirt before I put the DMSO on..(he was joking).