Re: DCA for parasites Dichloroacetic acid -sodium dichloroacetate and potassium dichloroacetate

According to wiki:

Copper sulfate was also used in the past as an emetic.[16] It is now considered too toxic for this use

Upon acute oral exposure, copper sulfate is only moderately toxic.[26] According to studies, the lowest dose of copper sulfate that had a toxic impact on humans is 11 mg/kg.[27] Because of its irritating effect on the gastrointestinal tract, vomiting is automatically triggered in case of the ingestion of copper sulfate. However, if copper sulfate is retained in the stomach, the symptoms can be severe. After 1–12 grams of copper sulfate are swallowed, such poisoning signs may occur as a metallic taste in the mouth, burning pain in the chest, nausea, diarrhea, vomiting, headache, discontinued urination, which leads to yellowing of the skin. In case of copper sulfate poisoning, injury to the brain, stomach, liver, or kidneys may also occur.

I don't think you would suggest anyone use this, do you?