The Today sponge contains 1,000 milligrams (mg) of nonoxynol-9.[12] Protectaid contains 5,000 mg of the F-5 gel, with three active ingredients (6.25 mg of nonoxynol-9, 6.25 mg of benzalkonium chloride, and 25 mg of sodium cholate).[9] Pharmatex contains 60 mg of benzalkonium chloride.[2]