Also, they are all very caustic and meto is the worst imo. Meto is hard to work with, its is not very soluble and it tastes like complete poison. Any roa. I never iv but I could imagine if the damage it does to sinuses it does to veins, that's a big no no. Overall, garbage class of chems. If you have access to them. You have access to better, less harmful opi rcs. I highly recommend odsmt and ap237 mixed, and a lot of people think that dipyanone(sp) is tits. I've yet to research it but, it's highly on my list. Right now obviously with how new it is, the minimum amount I can get is hella expensive. I'll wait until a domestic vendor has a small amount I cam pick up and not commit to a 5-10g buy