Bio-sil immune system booster colloidal silver 500ml is still considered to be the most universal antibiotic substance that is non-toxic even in micro-concentrations of 3-5 parts per million. It has been proven to be useful against over 650 different infectious conditions, as compared to traditional antibiotics, which are effective against 6-7 conditions. This product can be applied directly to open wounds, eye/ear infections and skin problems

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