Iodine is too reactive to be in nature as an element. Iodine compounds are not common in the ground. There is a mineral called caliche that is found in dry deserts. It has iodate in it. Iodide is found in seawater. Kelp has quite large amounts of iodine in it. Iodine is one of the heaviest elements needed by living things.
Azithromycin is effective for treating sinus infections caused by haemophilus influenzae, moraxella catarrhalis or streptococcus pneumoniae, according to the U.S. National Library of Medicine.
Most sinus infections only require three days of treatment with one 500mg tablet of azithromycin taken daily, reports the U.S. National Library of Medicine. Jupiterimages/Stockbyte/Getty Images. The most common side effects of azithromycin are diarrhea or loose stools, nausea, vomiting and abdominal pain.