I bought two types. The open package is the ivermectin paste by med-pharmex incorporated. So I probably ate that one. I am always looking for toxins in products (unless its an emergency) After I ate it, I called the manufacturer to ask about the ingredients as it all was not listed. Remember the paste says it's 1.87% ivermectin. That means it is not just plain ivermectin. At some point of talking to manufacturerssss I did learn that there were some additives, one being toxic to man. I don't recall the name. I do recall being shocked that one of the manufacturers of horse paste would not say what exactly was in it. He called it "trade secret". So there is other stuff in it. And be careful of continuing to take it when you don't need it. Because the horse stuff may have some other chemicals in it that are not good for you. I don't know if the human pills have other stuff just as bad in it because I'm sure it has fillers they don't mention on their boxes either. I have some made in another country. ...Just sayin...to be careful.... but yes, i do hear that the horse stuff was used for emergencies when they tyrants would not let us easily buy people ivermectin.