Neurology. 2004 Apr 27;62(8):1408-10.

Myoclonic status epilepticus following repeated oral ingestion of
colloidal silver.
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstra
ct&list_uids=15111684

Mirsattari SM, Hammond RR, Sharpe MD, Leung FY, Young GB.

Department of Clinical Neurological Sciences, University of Western
Ontario, London, Ontario, Canada.

"The authors report a case of a 71-year-old man who developed myoclonic
status epilepticus and coma after daily ingestion of colloidal silver
for 4 months resulting in high levels of silver in plasma,
erythrocytes, and CSF. Despite plasmapheresis, he remained in a
persistent vegetative state until his death 5.5 months later. Silver
products can cause irreversible neurologic toxicity associated with
poor outcome."

   PMID: 15111684