guiacol or peg400 is highly toxic. I knew a moron a few pics to the left of the gorilla who took win oral which was made up with a 10% peg400. He had flu like symptoms and we asked "what are you doing to yourself?" ....he told us and our opinion was the toxicity of the guiacol was making him sick. Its not meant to be ingested, espec not in large amounts. its a nasty solvent.