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Nystatin, sold under the brand name Mycostatin among others, is an antifungal medication. It is used to treat Candida infections of the skin including diaper rash, thrush, esophageal candidiasis, and vaginal yeast infections. It may also be used to prevent candidiasis in those who are at high risk. Nystatin may be used by mouth, in the vagina, or applied to the skin.
Read the full article on Wikipedia“Like amphotericin B and natamycin, nystatin is an ionophore. It binds to ergosterol, a major component of the fungal cell membrane. When present in sufficient concentrations, it forms pores in the membrane that lead to K+ leakage, acidification, and death of the fungus. Ergosterol is a sterol unique to fungi, so the drug does not have such catastrophic effects on animals or plants. However, many of the systemic/toxic effects of nystatin in humans are attributable to its binding to mammalian sterols, namely cholesterol. This is the effect that accounts for the nephrotoxicity observed when high serum levels of nystatin are achieved. Despite the molecular similarities and differences of ergosterol and cholesterol, there is currently no consensus as to why nystatin has a higher binding affinity for ergosterol because it remains unclear how the nystatin pores are formed. Researchers have concluded thus far that nystatin pores are formed from 4-12 nystatin molecules, with an unknown number of the necessary sterol interactions.”
“Dependent upon GI transit time”
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