Can vampires poop?
Furthermore, such a mass would be difficult to pass thru the intestines as it has no fibrous bulk, would create an intestinal impaction, causing massive vomiting from the large concentration of iron present, and any “real” vampire would have to eventually expel the waste, which would come out as a black, tarry, smelly …
Can you buy blood?
Yes. All the centers that supply blood for transfusions—whether they’re part of the American Red Cross or not—sell their products to cover operating expenses.
Is it OK to lick your blood?
Risks. There are potential health hazards in wound licking due to infection risk, especially in immunocompromised patients. Human saliva contains a wide variety of bacteria that are harmless in the mouth, but that may cause significant infection if introduced into a wound.