Wellness Reproductive Health Pregnancy Does Mucinex D Help You Get Pregnant? Some claim cough medicine may change your cervical mucus, boosting fertility and increasing the chances of getting pregnant. By Maggie O'Neill Maggie O'Neill Maggie O'Neill's Twitter Maggie O’Neill is a health writer and reporter based in New York who specializes in covering medical research and emerging wellness trends, with a focus on cancer and addiction. Prior to her time at Health, her work appeared in the Observer, Good Housekeeping, CNN, and Vice. She was a fellow of the Association of Health Care Journalists’ 2020 class on Women’s Health Journalism and 2021 class on Cancer Reporting. In her spare time, she likes meditating, watching TikToks, and playing fetch with her dog, Finnegan. health's editorial guidelines Updated on March 13, 2023 Medically reviewed by Sanaz Ghazal, MD Medically reviewed by Sanaz Ghazal, MD Sanaz Ghazal, MD, is a double board-certified fertility specialist and the founder and medical director of the innovative fertility clinic RISE Fertility. At RISE Fertility, Dr. Ghazal emphasizes fertility care for all. learn more Share this page on Facebook Share this page on Twitter Share this page on Pinterest Email this page The internet is a great place to go for life hacks—health-related and otherwise—but since viral content on the platform isn't often fact-checked, it's always good to research the content you're consuming. Case in point: In 2020, TikTok users spread a rumor that taking Mucinex (guaifenesin), the cough medicine, can help you get pregnant. However, no research confirms Mucinex helps you get pregnant. You should consult your healthcare provider before taking Mucinex during pregnancy. Cough medicines—like Mucinex—sometimes contain alcohol, which you should avoid while pregnant. Can Mucinex actually boost your fertility? Here's what you should know about the science behind the claim that cough medicine can increase your chances of getting pregnant. What Is Mucinex? Mucinex is an expectorant, a type of cough medicine that clears the phlegm in your air passages by thinning it out. It is available in: Liquid syrupsOral capsulesImmediate- or extended-release tablets People often take Mucinex if they are experiencing symptoms of the common cold or the flu. You can either take Mucinex on its own or combined with: Decongestants called Mucinex D (guaifenesin and pseudoephedrine) Cough suppressants, called Mucinex DM (guaifenesin and dextromethorphan) Why Do Some People Believe Mucinex Can Boost Their Fertility? The idea comes from how Mucinex thins out the phlegm in your air passages when you have a common cold or the flu. Like the mucus in your air passages, your cervix also produces a type of mucus that is essential to becoming pregnant. If your cervical mucus is too thick, it may be difficult for sperm to reach and fertilize the egg during conception. Thick cervical mucus also makes it hard for a fertilized egg to travel to the uterus and attach itself to the tissue that lines the inside of the uterus (called the endometrium). Why the TikTok ‘Benadryl Challenge’ Is So Dangerous Can Mucinex Help You Get Pregnant? If Mucinex can thin out the mucus in your air passages, can it also thin out your cervical mucus to boost your chances of getting pregnant? Unfortunately, the answer is not entirely clear. "While guaifenesin has been discussed for years as a possible way to improve both male and female fertility, the idea of taking it to help get pregnant is mostly anecdotal. There's no hard evidence," Lynn Westphal, MD, the chief medical officer at Kindbody, a fertility clinic in Los Altos, California, told Health. "The theory for women is that Mucinex may make the cervical mucus thinner, but the mucus at ovulation is usually already thin, so it is unlikely to have much of an impact," explained Dr. Westphal. The bottom line: No recent studies have demonstrated any statistical significance regarding the effects of Mucinex on cervical mucus, but it could have some effect on your chances of becoming pregnant. Are There Risks of Taking Mucinex? It's important to remember that while Mucinex does not essentially create any significant side effects, it may cause: Headaches Nausea Vomiting You should consult your healthcare provider if you develop symptoms of an allergic reaction, like difficulty breathing. It may also be beneficial to speak to your healthcare provider about taking Mucinex if you are trying to become pregnant or may be pregnant. Some cough medicines, like Mucinex, contain alcohol, which you should avoid during pregnancy. Safe Ways To Increase Fertility Even if taking Mucinex is not a foolproof way of becoming pregnant, there are some steps you can take to boost your fertility. Eliminate Cigarettes and Alcohol Smoking cigarettes and drinking alcohol can make it difficult to become pregnant and increase your chances of miscarriage if you are pregnant. Alcohol can cause damage to the fetus during development and can lead to issues for the child, including: Intellectual disabilityBehavioral issuesLearning disabilitiesFacial and heart defects Limit Caffeine If you're trying to get pregnant, limiting your daily cups of coffee, cans of soda, and artificial sweeteners may be helpful. Aim to consume less than 200 milligrams of caffeine per day while trying to get pregnant and even once you are pregnant. Eat Healthily Adjusting your diet can be beneficial for fertility. Eat a well-rounded diet of fruits, vegetables, grains, dairy, and protein. Consuming enough nutrients and vitamins, like folic acid, iron, and vitamin C can help promote menstrual regularity, which helps improve your fertility. Manage Stress Fertility problems can be stressful. It's important to find ways to manage or reduce your stress while you are trying to conceive. This is, of course, easier said than done. Still, try to find some activities that reduce or manage stress. A Quick Review No research confirms Mucinex helps you get pregnant. If you are considering trying Mucinex to help you get pregnant, talk to your healthcare provider. All in all, no matter what the health advice—even if it seems fairly innocent—it's probably best to talk to your healthcare provider. Was this page helpful? Thanks for your feedback! Tell us why! Other Submit 4 Sources Health.com uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy. MedlinePlus. Guaifenesin. American Pregnancy Association. Cervical mucus and early pregnancy. MedlinePlus. Birth control pill - series—progestin in pill. MedlinePlus. Steps to take before you get pregnant.