What people do not realise about antibiotics is that they lower your immune system and at the same time they will kill a majority of bacteria within your body, that is good and bad bacteria. For instance if you take an antibiotic for Strep throat, you can kill up to 95% of bateria you have in your stomach and at the same time lower your immune system. It sounds to us that there has been an overuse of antibiotics. We work with bacteria all the time and we find that a lot of people who have been on antibiotics for a long time have very little resistance. For the boil problem, you can make your own material from epsom salts and glycerine and apply it, it wil draw out the core very quickly or else you can use ATHOQ, one of our preparations which is also extremely good. Wish you luck.