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<meta name="robots" content="INDEX,FOLLOW,NOARCHIVE" /><meta name="citation_inbook_title" content="Drugs and Lactation Database (LactMed®) [Internet]" /><meta name="citation_title" content="Moxidectin" /><meta name="citation_publisher" content="National Institute of Child Health and Human Development" /><meta name="citation_date" content="2024/08/15" /><meta name="citation_pmid" content="30222293" /><meta name="citation_fulltext_html_url" content="https://www.ncbi.nlm.nih.gov/books/NBK525501/" /><meta name="citation_keywords" content="Moxidectin" /><meta name="citation_keywords" content="Cydectin" /><meta name="citation_keywords" content="Moxidectinum" /><meta name="citation_keywords" content="Moxidectina" /><meta name="citation_keywords" content="Moxidectine" /><meta name="citation_keywords" content="ProHeart 6" /><meta name="citation_keywords" content="UNII-NGU5H31YO9" /><meta name="citation_keywords" content="NGU5H31YO9" /><meta name="citation_keywords" content="CL 301,423" /><meta name="citation_keywords" content="Milbemycin B" /><meta name="citation_keywords" content="(1R,4S,4'E,5'S,6R,6'S,8R,10E,13R,14E,16E,20R,21R,24S)-21,24-dihydroxy-4'-methoxyimino-5',11,13,22-tetramethyl-6'-[(E)-4-methylpent-2-en-2-yl]spiro[3,7,19-trioxatetracyclo[15.6.1.14,8.020,24]pentacosa-10,14,16,22-tetraene-6,2'-oxane]-2-one" /><link rel="schema.DC" href="http://purl.org/DC/elements/1.0/" /><meta name="DC.Title" content="Moxidectin" /><meta name="DC.Type" content="Text" /><meta name="DC.Publisher" content="National Institute of Child Health and Human Development" /><meta name="DC.Date" content="2024/08/15" /><meta name="DC.Identifier" content="https://www.ncbi.nlm.nih.gov/books/NBK525501/" /><meta name="description" content="No information is available on the clinical use of moxidectin during breastfeeding. However, amounts in breastmilk appear to be low and would not be expected to cause any adverse effects in breastfed infants. Although labeling recommends withholding breastfeeding for 7 days after a dose, this appears to be unnecessary; however, withholding breastfeeding for 1 day would decrease infant exposure by 40%. Until more data become available, moxidectin should be used with caution during breastfeeding, especially while nursing a newborn or preterm infant." /><meta name="og:title" content="Moxidectin" /><meta name="og:type" content="book" /><meta name="og:description" content="No information is available on the clinical use of moxidectin during breastfeeding. However, amounts in breastmilk appear to be low and would not be expected to cause any adverse effects in breastfed infants. Although labeling recommends withholding breastfeeding for 7 days after a dose, this appears to be unnecessary; however, withholding breastfeeding for 1 day would decrease infant exposure by 40%. Until more data become available, moxidectin should be used with caution during breastfeeding, especially while nursing a newborn or preterm infant." /><meta name="og:url" content="https://www.ncbi.nlm.nih.gov/books/NBK525501/" /><meta name="og:site_name" content="NCBI Bookshelf" /><meta name="og:image" content="https://www.ncbi.nlm.nih.gov/corehtml/pmc/pmcgifs/bookshelf/thumbs/th-lactmed-lrg.png" /><meta name="twitter:card" content="summary" /><meta name="twitter:site" content="@ncbibooks" /><meta name="bk-non-canon-loc" content="/books/n/lactmed/LM1411/" /><link rel="canonical" href="https://www.ncbi.nlm.nih.gov/books/NBK525501/" /><link rel="stylesheet" href="/corehtml/pmc/css/figpopup.css" type="text/css" media="screen" /><link rel="stylesheet" href="/corehtml/pmc/css/bookshelf/2.26/css/books.min.css" type="text/css" /><link rel="stylesheet" href="/corehtml/pmc/css/bookshelf/2.26/css/books_print.min.css" type="text/css" /><style type="text/css">p a.figpopup{display:inline !important} .bk_tt {font-family: monospace} .first-line-outdent .bk_ref {display: inline} </style><script type="text/javascript" src="/corehtml/pmc/js/jquery.hoverIntent.min.js"> </script><script type="text/javascript" src="/corehtml/pmc/js/common.min.js?_=3.18"> </script><script type="text/javascript">window.name="mainwindow";</script><script type="text/javascript" src="/corehtml/pmc/js/bookshelf/2.26/book-toc.min.js"> </script><script type="text/javascript" src="/corehtml/pmc/js/bookshelf/2.26/books.min.js"> </script>
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<div class="pre-content"><div><div class="bk_prnt"><p class="small">NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.</p><p>Drugs and Lactation Database (LactMed®) [Internet]. Bethesda (MD): National Institute of Child Health and Human Development; 2006-. </p></div></div></div>
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<div class="main-content lit-style" itemscope="itemscope" itemtype="http://schema.org/CreativeWork"><div class="meta-content fm-sec"><h1 id="_NBK525501_"><span class="title" itemprop="name">Moxidectin</span></h1><p class="small">Last Revision: <span itemprop="dateModified">August 15, 2024</span>.</p><p><em>Estimated reading time: 1 minute</em></p></div><div class="body-content whole_rhythm" itemprop="text"><p>CASRN: 113507-06-5</p><a href="https://pubchem.ncbi.nlm.nih.gov/substance/135023246" title="View this structure in PubChem" class="img_link" ref="pagearea=body&targetsite=entrez&targetcat=link&targettype=pubchem"><img src="https://pubchem.ncbi.nlm.nih.gov/image/imgsrv.fcgi?t=l&sid=135023246" alt="image 135023246 in the ncbi pubchem database" /></a><div id="LM1411.Drug_Levels_and_Effects"><h2 id="_LM1411_Drug_Levels_and_Effects_">Drug Levels and Effects</h2><div id="LM1411.Summary_of_Use_during_Lactation"><h3>Summary of Use during Lactation</h3><p>No information is available on the clinical use of moxidectin during breastfeeding. However, amounts in breastmilk appear to be low and would not be expected to cause any adverse effects in breastfed infants. Although labeling recommends withholding breastfeeding for 7 days after a dose, this appears to be unnecessary; however, withholding breastfeeding for 1 day would decrease infant exposure by 40%. Until more data become available, moxidectin should be used with caution during breastfeeding, especially while nursing a newborn or preterm infant.</p></div><div id="LM1411.Drug_Levels"><h3>Drug Levels</h3><p><i>Maternal Levels.</i> Twelve lactating women who averaged 29.6 weeks (range 21 to 100 weeks) postpartum and had weaned their infants were given moxidectin 8 mg orally as a single dose. A breast pump was used to collect milk samples for at least 30 days, and in some, at various times for up to 90 days after the dose. The total amount of drug excreted into breastmilk averaged 0.056 mg over the study period, which was 8.7% (SD 3.2%) of the weight-adjusted maternal dose. The amount of moxidectin excreted into breastmilk tended to be higher in some women with lower maternal body weight.[<a class="bk_pop" href="#LM1411.REF.1">1</a>]</p><p>A physiologically based pharmacokinetic (PBPK) model using data from this study was developed and compared to results of animal exposure studies. It concluded that even with no interruption of breastfeeding after a dose, the dose that an exclusively breastfed infant would receive would be well below the no observed adverse effect level (NOAEL) in animal studies. Withholding breastfeeding for 24 hours would result in about a 40% decrease in infant exposure.[<a class="bk_pop" href="#LM1411.REF.2">2</a>]</p><p><i>Infant Levels.</i> Relevant published information was not found as of the revision date.</p></div><div id="LM1411.Effects_in_Breastfed_Infants"><h3>Effects in Breastfed Infants</h3><p>Relevant published information was not found as of the revision date.</p></div><div id="LM1411.Effects_on_Lactation_and_Breastmi"><h3>Effects on Lactation and Breastmilk</h3><p>Relevant published information was not found as of the revision date.</p></div><div id="LM1411.References"><h3>References</h3><dl class="temp-labeled-list"><dt>1.</dt><dd><div class="bk_ref" id="LM1411.REF.1">Korth-Bradley
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JM, Parks
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V, Chalon
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S, et al.
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Excretion of moxidectin into breast milk and pharmacokinetics in healthy lactating women.
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Antimicrob Agents Chemother
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2011;55:5200-4.
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[<a href="/pmc/articles/PMC3195050/" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pmc">PMC free article<span class="bk_prnt">: PMC3195050</span></a>] [<a href="https://pubmed.ncbi.nlm.nih.gov/21896908" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pubmed">PubMed<span class="bk_prnt">: 21896908</span></a>]</div></dd><dt>2.</dt><dd><div class="bk_ref" id="LM1411.REF.2">Wood
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ND, Smith
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D, Kinrade
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SA, et al.
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The use of quantitative clinical pharmacology approaches to support moxidectin dosing recommendations in lactation.
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PLoS Negl Trop Dis
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2024;18:e0012351.
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[<a href="/pmc/articles/PMC11326704/" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pmc">PMC free article<span class="bk_prnt">: PMC11326704</span></a>] [<a href="https://pubmed.ncbi.nlm.nih.gov/39102440" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pubmed">PubMed<span class="bk_prnt">: 39102440</span></a>]</div></dd></dl></div></div><div id="LM1411.Substance_Identification"><h2 id="_LM1411_Substance_Identification_">Substance Identification</h2><div id="LM1411.Substance_Name"><h3>Substance Name</h3><p>Moxidectin</p></div><div id="LM1411.CAS_Registry_Number"><h3>CAS Registry Number</h3><p>113507-06-5</p></div><div id="LM1411.Drug_Class"><h3>Drug Class</h3><p>Breast Feeding</p><p>Lactation</p><p>Milk, Human</p><p>Anti-Infective Agents</p><p>Antiparasitic Agents</p><p>Anthelmintics</p><p>Antinematodal Agents</p><p>Insecticides</p><p>Macrolides</p></div></div><div><dl class="temp-labeled-list small"><dt></dt><dd><div><p class="no_top_margin"><p><b>Disclaimer: </b>Information presented in this database is not meant as a substitute for professional judgment. You should consult your healthcare provider for breastfeeding advice related to your particular situation. The U.S. government does not warrant or assume any liability or responsibility for the accuracy or completeness of the information on this Site.</p></p></div></dd></dl></div><div id="bk_toc_contnr"></div></div></div>
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