If you experience any of these symptoms after ingesting peppermint oil, seek emergency medical care as soon as possible.Holly Roberts is an award-winning health and fitness writer whose work has appeared in health, lifestyle and fitness magazines. in English and an M.A. Early research shows that inhaling peppermint oil does not reduce anxiety before getting a catheter placed in the body. 2758955. She has been a professional writer for more than 10 years and holds a B.A. Menthol in peppermint can cause throat closure in small children and adults. Enteric-coated capsules are often recommended for patients with IBS. The use of peppermint essential oil in excess can cause harmful side effects to health. The National Center for Complementary and Alternative Medicine says that when you take peppermint oil capsules with with antacids, the coating on the peppermint oil capsule can break down more quickly, increasing your risk for heartburn and nausea.Some people who take peppermint oil capsules experience allergic reactions, including breathing problems, skin irritation like rashes, hives or inflammation, or throat closing, according to MedLine Plus, the online health information resource maintained by the U.S. National Library of Medicine and the National Institutes of Health. People who have gastrointestinal issues like gastroesophageal reflux disease, also known as GERD, or hiatal hernia may be especially prone to this side effect. Herbal/health supplements should be purchased from a reliable source to minimize the risk of contamination.Peppermint may also be used for purposes not listed in this product guide.Follow all directions on the product label and package. Side effects of peppermint essential oil Other Side Effects. You may not be able to use peppermint if you have certain medical conditions.Ask a doctor, pharmacist, or other healthcare provider if it is safe for you to use this product if you have:a condition in which the stomach does not produce acid.When considering the use of herbal supplements, seek the advice of your doctor.

Peppermint can relax the sphincter -- the muscle that connects the stomach to the esophagus -- so much that stomach acid flows back up into your esophagus. It can give you headaches, heart burn, and allergic reactions. Peppermint oil is commonly used as flavoring in foods and beverages and as a fragrance in soaps and Clinical evidence suggests that peppermint oil likely can help with symptoms of In dietary supplements, peppermint oil has been tried for a variety of digestive problems including:Dietary supplements containing peppermint oil are also used by some people for the following conditions, although there is no clear evidence that they are helpful:Skin preparations containing peppermint oil are used by some people for the following conditions, although, again, there is no clear evidence that they are helpful:In addition, peppermint oil vapor is sometimes inhaled to treat Preliminary studies also suggest that dietary supplements containing a combination of peppermint oil and caraway oil may help relieve indigestion.In most adults, the small doses of peppermint oil contained in dietary Although enteric-coated peppermint oil capsules may reduce the risk of heartburn, their protective coating can break down more quickly and increase the risk of heartburn when taken at the same time as prescription and over-the-counter medications that decrease stomach acid and which are often used for heartburn or Before taking peppermint oil, discuss the risks and benefits with your Be cautious about combining peppermint oil with certain drugs because it may inhibit the body's ability to metabolize the drugs and increase the risk of side effects.National Center for Complementary and Alternative Medicine: “Herbs at a Glance: Peppermint Oil,” “Irritable Bowel Syndrome and CAM: At a Glance.” Natural Medicines Comprehensive Database: “Peppermint.”WebMD does not provide medical advice, diagnosis or treatment. in literature.Monkey Business Images Ltd/Monkey Business/Getty Images