How long will side effects from antibiotics last?

Answer:
Some of the most popular antibiotics are becoming increasingly ineffective on today's "superbugs" - bacteria which have become antibiotic resistant by in-breeding and mutating into new forms. For example, the age-old respiratory bacteria S. pneumoniae (Streptococcus pneumonia) and the intestinal enterococcus and salmonella are now all stubborn against a long list of antibiotics. This leads to the search for stronger formulas.
First answer by Jonatan5. Last edit by Jonatan5. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 1 [recommend question].