How can i flush antibiotics out of my system?

Metabolism: There is no 'easy way' to flush out antibiotics from your system - your body has to do that naturally. There are 2 main organs that do that - the liver and the kidney. Depending on 'what' antibiotics you took, either organ may be doing the brunt of the work. I would advise 'being kind' to each organ: so no alcohol or toxins for the liver. Drink lots of water for the kidneys and keep salt to a min.