BleedStop is guaranteed to stop bleeding in seconds even if you are on blood thinners. Used by emergency rooms across the country to stop bleeding on blood thinner patients. BleedStop concentrates the platelets and other clotting factors in the blood to form a rapidly accelerated clot the way the body naturally would. Safe in the wound, sterile, soothing, non-stinging and hypoallergenic. HSA/FSA EligibleStops bleeding in seconds even if you are on blood thinnersConcentrates the platelets and other clotting factorsSterile, soothing, non-stinging and hypoallergenic