The BEG basal spray contains BEG: Bactroban (Mupirocin) 0.2%, Edetate Disodium (EDTA) 1%, Gentamicin 3% BEG Nasal Spray is an effective way to eradicate biofilm forming, antibiotic resistant staphylococcus colonizations in the sinus cavity. BEG Nasal Spray is used to treat patients susceptible to recurrent staph infections. This unique formulation addresses the needs of patients recovering from mold or lyme toxins. It is an effective option to combat antibiotic resistant bacterial colonies. This is the key step aiding in the recovery and healing process. BEG Nasal Spray's active ingredients are a combination of two antibiotics (Bactroban, Gentamicin) and the calcium chelator EDTA. The EDTA dissolves the biofilm coating clearing the way for a direct attack by the topical antibiotics. I have been waiting a couple of weeks for my compounding pharmacy to make this up for me and send it on. Today it arrived. First spray stung like hell. Im to use it 3 times a day until its gone. Im also still on oral antibiotics augmentin and minocycline which is helping but still have some issues obviously. I think i have 8 days of augmentin left and will hold off on oral antibiotics and see how effective the sprays has been. I think the spray is suppose to last 4 weeks?? Someone else from here who has been using this for a short while has told me its helping him but the spray is very irritating and has had a few nose bleeds so has diluted it by 50%. cheers!!!