CELOX over-the-counter blood clotting products are FDA 510k approved and have been proven in emergency and surgical use. They have saved lives on the battlefield in Iraq and Afghanistan and have a proven 100% survival rate in studies conducted by the U.S. Marines. CELOX Blood Clotting Products are safe, effective and easy to use. CELOX Granules are a flakey powder contained in 10 packs of 2g each. Packets are lightweight and easy to store and carry. To use - tear it open, pour it on and apply pressure.