For centuries, numerous health benefits have accompanied the use of peppermint oil as a supplement. MedlinePlus gives peppermint oil a grade that indicates good scientific evidence for uses as an antispasmodic after endoscopic procedures, management of cough, improvement of irritable bowel syndrome symptoms, relief of tension headaches and, when combined with caraway oil, help with indigestion. As a widely used supplement, there are some common side effects.
Skin Reactions
Peppermint applied in the essential oil form directly on the skin can help improve mental concentration, provide relief from headaches and reduce mental tiredness. To achieve these results, apply peppermint oil in diluted form to the forehead and temples. Peppermint oil may cause a skin rash if not diluted properly and in some individuals with allergies. Ointments that contain peppermint in its menthol form or as essential oil can cause skin reactions in some people.
Mouth Sores
Peppermint supplements come in many forms. You can take it in capsule form, as a tea or tincture made from essential oil and pure grain alcohol. However, according to Drugs.com, highly concentrated forms of peppermint can cause mouth sores and ulcers. Follow dosage instructions carefully and if you have this reaction, try diluting the dosage you take or decreasing the frequency you use peppermint.
Heartburn
Although peppermint can treat heartburn and indigestion, one potential side effect of taking peppermint supplements is heartburn according to MedlinePlus. To avoid this, the Vitamins and Health Supplements Guide recommends taking enteric-coated peppermint capsules that are gentler on your digestive system. Make sure to take pill forms of peppermint with a full glass of water. People who have gastroesophageal reflux disease should not used peppermint supplements since this side effect can worsen their condition.
Headache and Dizziness
MedlinePlus reports that some individuals who take peppermint in capsule form experience headache and dizziness as a side effect. Although less documented, this symptom can occur when you take peppermint in larger doses than recommended.
Worsening of Gallstones
Peppermint supplements may worsen gallstones in people who already have a problem with this condition, according to Drugs.com. Therefore, if you have gallstones or other gallbladder condition, consult with your physician before supplementing with peppermint in any form. It is also a good idea to get advice from a natural health practitioner before beginning a peppermint regimen.
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