Zithromax is an antibiotic that is usually indicated in the treatment of a wide variety of bacterial infections not just in adults, but in children too. Zithromax should be taken with care by those who are taking birth control pills as it may affect the medication, rendering it less effective than it needs to be to prevent pregnancy. order zithromax online Most of the side effects are of a gastrointestinal nature such as nausea, gastrointestinal, vomiting, and abdominal pain. As such, many doctors will save Zithromax for a last resort for children who do not swallow pills because they may not be able to ingest enough of the medication for it to be effective because of the poor taste.