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<title>Guaifenesin - Drugs and Lactation Database (LactMed®) - NCBI Bookshelf</title>
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content="2/G" /><meta name="citation_keywords" content="GGE" /><link rel="schema.DC" href="http://purl.org/DC/elements/1.0/" /><meta name="DC.Title" content="Guaifenesin" /><meta name="DC.Type" content="Text" /><meta name="DC.Publisher" content="National Institute of Child Health and Human Development" /><meta name="DC.Date" content="2018/10/31" /><meta name="DC.Identifier" content="https://www.ncbi.nlm.nih.gov/books/NBK501455/" /><meta name="description" content="Neither the excretion of guaifenesin in milk nor its effect on breastfed infants have been studied. It is unlikely that with usual maternal doses amounts in breastmilk would harm the nursing infant, especially in infants over 2 months of age. It is best to avoid the use of products with a high alcohol content while nursing." /><meta name="og:title" content="Guaifenesin" /><meta name="og:type" content="book" /><meta name="og:description" content="Neither the excretion of guaifenesin in milk nor its effect on breastfed infants have been studied. It is unlikely that with usual maternal doses amounts in breastmilk would harm the nursing infant, especially in infants over 2 months of age. 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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>
<div class="main-content lit-style" itemscope="itemscope" itemtype="http://schema.org/CreativeWork"><div class="meta-content fm-sec"><h1 id="_NBK501455_"><span class="title" itemprop="name">Guaifenesin</span></h1><p class="small">Last Revision: <span itemprop="dateModified">October 31, 2018</span>.</p></div><div class="body-content whole_rhythm" itemprop="text"><p>CASRN: 93-14-1</p><a href="https://pubchem.ncbi.nlm.nih.gov/substance/134972687" title="Structure in PubChem" class="img_link" ref="pagearea=body&amp;targetsite=entrez&amp;targetcat=link&amp;targettype=pubchem"><img src="/books/NBK501455/bin/S134972687v14.jpg" alt="Chemical structure" /></a><div id="LM571.drug-levels-effects"><h2 id="_LM571_drug-levels-effects_">Drug Levels and Effects</h2><div id="LM571.sum-use"><h3>Summary of Use during Lactation</h3><p>Neither the excretion of guaifenesin in milk nor its effect on breastfed infants have been studied. It is unlikely that with usual maternal doses amounts in breastmilk would harm the nursing infant, especially in infants over 2 months of age. It is best to avoid the use of products with a high alcohol content while nursing.</p></div><div id="LM571.drug-levels"><h3>Drug Levels</h3><p><i>Maternal Levels.</i> Relevant published information was not found as of the revision date.</p><p><i>Infant Levels.</i> Relevant published information was not found as of the revision date.</p></div><div id="LM571.effects-inf"><h3>Effects in Breastfed Infants</h3><p>Relevant published information was not found as of the revision date.</p></div><div id="LM571.effects-lact"><h3>Effects on Lactation and Breastmilk</h3><p>Relevant published information was not found as of the revision date.</p></div></div><div id="LM571.subst-id"><h2 id="_LM571_subst-id_">Substance Identification</h2><div id="LM571.subst-name"><h3>Substance Name</h3><p>Guaifenesin</p></div><div id="LM571.casno"><h3>CAS Registry Number</h3><p>93-14-1</p></div><div id="LM571.drug-class"><h3>Drug Class</h3><ul class="simple-list"><li class="half_rhythm"><div>Breast Feeding</div></li><li class="half_rhythm"><div>Lactation</div></li><li class="half_rhythm"><div>Expectorants</div></li></ul></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>
<div class="post-content"><div><div class="half_rhythm"><a href="/books/about/copyright/">Copyright Notice</a><p class="small"><b>Attribution Statement:</b> LactMed is a registered trademark of the U.S. Department of Health and Human Services.</p></div><div class="small"><span class="label">Bookshelf ID: NBK501455</span><span class="label">PMID: <a href="https://pubmed.ncbi.nlm.nih.gov/30000515" title="PubMed record of this page" ref="pagearea=meta&amp;targetsite=entrez&amp;targetcat=link&amp;targettype=pubmed">30000515</a></span></div><div style="margin-top:2em" class="bk_noprnt"><a class="bk_cntns" href="/books/n/lactmed/">Contents</a><div class="pagination bk_noprnt"><a class="active page_link prev" href="/books/n/lactmed/LM931/" title="Previous page in this title">&lt; Prev</a><a class="active page_link next" href="/books/n/lactmed/LM623/" title="Next page in this title">Next &gt;</a></div></div></div></div>
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