he says he made that up
https://rockcelebrities.net/is-keith-richards-full-body-blood-transfusion-his-secret-to-immortality/
lolol
“After getting high one time, he was exposed to strychnine which is used as a bait for rodents, and was poisoned when some strychnine got mixed with his drugs. Nonetheless, he escaped that situation with little or no harm.”