Symptoms of mercury poisoning in humans 1. Psychological disturbances Angry fits, short term memory loss, low self esteem, inability to sleep, loss of self-control, sleepiness. Loss of an ability to learn new things, doing things by rote. 2. Oral Cavity problems Inflammation of the mouth, loss of bone around teeth, ulcerated gums and other areas in the mouth, loose teeth, darkening of gums, taste of metal, bleeding of gums. 3. Digestive tract problems Cramps, inflamed colon, GI problems, Diarrhea and other digestive problems. 4. Cardiovascular problems Weak pulse, blood pressure changes, chest pain, or feeling of pressure in the chest area. 5. Respiratory problems Weakness and problems with breathing, Emphysema, Coughing persistently. 6 Neurological Problems Headaches, vertigo, tinnitus,

antimony poisoning,
a toxic effect caused by the ingestion or inhalation of antimony or antimony compounds. It is characterized by vomiting, diaphoresis, diarrhea, and a metallic taste in the mouth. Irritation of the skin or mucous membranes may result from external exposure. Severe poisoning resembles arsenic poisoning. Antimony and antimony compounds are common ingredients of many substances used in medicine and industry.
Mosby's Medical Dictionary

Antimony. With both metal and non-metal forms, this poison is similar to arsenic. Occurring naturally in ores, there are many uses for antimony though it is highly toxic and known to cause cancer

In quinine poisoning, severe cardiovascular toxicity results from their Na+-channel blocking effects with hypotension, shock, dysrhythmias and cardiac arrest. Other features include coma, convulsions and, in quinine poisoning, oculotoxicity. Severity of symptoms is closely related to the dose ingested and plasma/serum concentration. In chloroquine poisoning, hypokalaemia is closely related to severity.