I've had great success with natural antibiotics and am currently using them to treat small intestinal bacterial overgrowth which is exasperating my acne.. Many of them are also anti fungal which clears yeast out of your system as well. They strengthen the immune system, help circulation, digestion etc. Some can be strong so they can make you feel worse at first when you start taking them and may make breakouts temporarily worsen. This is due to the body being overloaded with toxins which are being released due to bad bacteria and yeast dying.
Natural antibiotics: coconut oil, apple cider vinegar, goldenseal, barberry, olive leaf, oregano oil, oregon grape root, clove oil, paul d'arco, peppermint oil, manuka honey internally, grapefruit seed extract.. there are many others as well.