You people are idiots and screw up the ratings on this product
seriously do any of you have an education at all? or do any basic research on yourself? If you take ANY antibotic for years, even months your body will build immunity to it. You body will build immunity to almost everything. Antibiotics are NOT meant to be taken for months let alone years for this reason. If you acne that won't clear up within weeks on an antibiotic you should stop taking them and change your diet etc. but odds are most are too lazy and looking for an easier solution.