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.
Azithromycin is used to treat many different infections, including: 1  Prevention and treatment of acute bacterial exacerbations of chronic obstructive pulmonary disease due to H. influenzae, M. catarrhalis, or S. pneumoniae. 2  Acute bacterial sinusitis due to H. influenzae, M. catarrhalis, or S. pneumoniae.