Hi I was fired from my job for saying something messing around and the person i said it too went on to make up a story that wasn't true and I was let go because of it. I told her the chemical was bad. She went on to make up a story saying I told her not to add it and that I never added it myself which is untrue. I had no idea what the chemical was until I checked the databses. Is there anything I can do about it? I asked for any evidence of any wrongdoing and they said they had none but my verbal confession from another person which I never said. I also have witnessed them putting copper sulphate which is listed as a pesticide by every chemical database and the U.N. database in their products.Upon oral exposure, copper sulfate is only moderately toxic. According to studies, the lowest dose of copper sulfate that had a toxic impact on humans is 11 mg/kg. 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 cases of copper sulfate poisoning, injury to the brain, stomach, liver, or kidneys may also occur.