The cold medicine you picked up at the store involves some cool chemistry to treat your symptoms. We're conducting a survey of our viewers! If you have time, please give us feedback: www.surveymonkey.com/r/SciShowSurvey2017 Hosted by: Olivia Gordon ---------- Support SciShow by becoming a patron on Patreon: www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters: Kelly Landrum Jones, Sam Lutfi, Kevin Knupp, Nicholas Smith, Inerri, D.A. Noe, alexander wadsworth, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Bella Nash, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick Merrithew, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz ---------- Looking for SciShow elsewhere on the internet? Facebook: www.facebook.com/scishow Twitter: www.twitter.com/scishow Tumblr: scishow.tumblr.com Instagram: instagram.com/thescishow ---------- Sources: www.health.harvard.edu/diseases-and-conditions/common-cold-viral-rhinitis library.med.utah.edu/WebPath/INFLHTML/INFL005.html www.sciencedirect.com/science/article/pii/S1879729614001665?via%3Dihub www.sciencedirect.com/science/article/pii/S1081120610602402?via%3Dihub secure.medicalletter.org/TML-article-1484d www.cochrane.org/CD009345/ARI_antihistamines-common-cold respiratory-research.biomedcentral.com/articles/10.1186/1465-9921-13-98 www.tandfonline.com/doi/full/10.3109/01902148.2011.623116 www.sciencedirect.com/science/article/pii/S0954611115300640?via%3Dihub www.ncbi.nlm.nih.gov/pubmed/28761581 www.sciencedirect.com/science/article/pii/S0163725816000176 web.archive.org/web/20121016221008/ www.deadiversion.usdoj.gov/drugs_concern/dextro_m/dextro_m.pdf www.ncbi.nlm.nih.gov/pubmed/18253996 www.ncbi.nlm.nih.gov/pubmed/15231978 Image Sources: upload.wikimedia.org/wikipedia/commons/thumb/e/e5/%28%2B%29-Pseudoephedrin.svg/2000px-%28%2B%29-Pseudoephedrin.svg.png commons.wikimedia.org/wiki/File:Phenylephrine.png images.rxlist.com/images/rxlist/hycotuss2.gif commons.wikimedia.org/wiki/Category:Dextromethorphan#/media/File:Dextromethorphan_skeletal.png commons.wikimedia.org/wiki/File:Tightjunction_BBB.jpg

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