Like many selenium compounds,<unk>  is highly toxic in excessive quantities, and ingestion of any significant quantity of<unk>  is usually fatal, however it is an approved dietary source in proper amounts. Symptoms of selenium poisoning can occur several hours after exposure, and may include stupor, nausea, severe hypotension and death.
Selenous acid
Hydrogen fluoride
Carbonated water
Biotin
Dichloroacetic acid
Selenium disulfide
Trace amine
Sucrosomial iron