Original: Guarana extract reduced aggregation of rabbit platelets by up to 37 percent below control values and decreased platelet thromboxane formation from arachidonic acid by 78 percent below control values.
Simplified: A university study in Brazil of guaraná extract showed a platelet aggregation decrease of up to 37% of control values and a decrease of platelet thromboxane formation from arachidonic acid of up to 78% of control values.