ABSTRACT
Halogens (fluorine, chlorine, bromine, iodine) play an important role in the field of pharmaceuticals. Idoxuridine is an antivirus ophthalmic solution and is generally used as a therapeutic drug for keratitis occurring resulting from inflammation due to viral infection. Levothyroxine is the oldest iodine-containing drug used as a thyroid hormone agent. There are two types of thyroid hormones, namely triiodothyronine (T3) and thyroxine (T4). T3 activity is said to be several times stronger than T4. Iodine is indispensable in X-ray contrast agents. Thyroid hormones are comprised of iodine. Sterilizing agents commonly used in hospitals include benzalkonium chloride, chlorohexidine gluconate, and povidone iodine. X-ray contrast agents are widely used for cardiovascular and cerebrovascular examinations and other detailed examinations performed in hospitals. In most cases, iodine-based drugs are used. One-third of radiopharmaceuticals are of iodine compounds. Radioactive iodine compounds can diagnose illnesses. Cadexomer iodine is used for bedsores. Iodine-based sterilizers are multidrug resistant.
