Betadine, a povidone iodine solution, is primarily used to do what?

Betadine, which is a povidone iodine solution, is primarily used to reduce microorganisms on the skin. This antiseptic is commonly applied to the skin before surgical procedures or to clean wounds, as it effectively kills bacteria, viruses, and fungi. Its action works by releasing iodine, which has strong antimicrobial properties. This makes it an essential product in maintaining hygiene and preventing infections during medical procedures.

The other options mentioned do not accurately reflect the primary function of Betadine. For instance, while thyroid deficiency treatment and management of excessive thyroid function do involve the use of iodine, Betadine itself is not prescribed for these purposes. Additionally, it is not a dietary supplement and does not serve to address dietary deficiencies, further distinguishing its primary use from those cited in the other options.