There is no antidote for ricin but ricin exposure is not invariably fatal. …According to the CDC’s website, someone who has ingested “a significant amount” will develop vomiting and diarrhea within the first 6-12 hours other symptoms of ricin poisoning include hallucinations, seizures, and blood in the urine. “I have in my possession approximately 67 grams of ricin with which I will indiscriminately target at least five of your clients.” “Your establishment has been targeted,” the letter begins. Seattle’s The Stranger has the scoop on a very disturbing threat:Įleven gay bars in Seattle received letters today addressed to the “Owner/Manager” from someone claiming to be in the possession of ricin, a deadly poison.