Diiodohydroxyquin
Diiodohydroxyquin (also known as iodoquinol) is a medication primarily used to treat amoebiasis, an infection caused by the amoeba Entamoeba histolytica. It is an antiprotozoal agent that works by inhibiting the enzymatic processes of the amoeba, leading to its death. Diiodohydroxyquin is also effective against other protozoal infections and can be used as a topical agent to treat certain skin conditions.
Medical Uses[edit | edit source]
Diiodohydroxyquin is indicated for the treatment of amoebiasis, particularly the luminal (intestinal) form of the disease. It is often prescribed when the infection is confined to the intestine and has not spread to other parts of the body. In addition to its use in amoebiasis, diiodohydroxyquin has been used to treat dermatitis herpetiformis and as a secondary treatment for giardiasis, another protozoal infection.
Mechanism of Action[edit | edit source]
The exact mechanism of action of diiodohydroxyquin is not fully understood. However, it is believed to exert its antiprotozoal effects by interfering with the DNA replication process of the protozoa, leading to their death. It may also disrupt the enzymatic activities within the protozoal cells, further contributing to its efficacy against these organisms.
Side Effects[edit | edit source]
The use of diiodohydroxyquin can be associated with several side effects, including nausea, vomiting, diarrhea, and abdominal pain. Less commonly, it can cause neurological symptoms such as neuropathy or a sense of numbness and tingling in the extremities. Long-term use or high doses of diiodohydroxyquin may lead to thyroid dysfunction due to its iodine content.
Precautions[edit | edit source]
Patients with a known hypersensitivity to diiodohydroxyquin or any of its components should avoid its use. Caution is advised in patients with pre-existing thyroid disorders, as the iodine content of the medication may affect thyroid function. Regular monitoring of thyroid function tests is recommended for patients on long-term therapy.
Pharmacokinetics[edit | edit source]
Diiodohydroxyquin is absorbed from the gastrointestinal tract and metabolized in the liver. Its exact half-life is variable, but it is known to be excreted primarily in the feces. The pharmacokinetics of diiodohydroxyquin may be altered in patients with impaired liver function, necessitating dose adjustments.
Conclusion[edit | edit source]
Diiodohydroxyquin is a valuable medication in the treatment of amoebiasis and other protozoal infections. Its efficacy, combined with a generally tolerable side effect profile, makes it a useful option for patients with these conditions. However, its use requires careful consideration of potential side effects and precautions, particularly in patients with thyroid disorders or liver impairment.
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Contributors: Prab R. Tumpati, MD