When applied into the nose: There isn't enough reliable information to know if peppermint oil is safe or what the side effects might be. When applied into the nose: There isn't enough reliable ...

Do not crush or chew the capsules. Doing so can release all of the drug at once, increasing the risk of side effects. If you are unable to swallow the capsules, you may open the capsule of some ...

When taken orally, peppermint oil may cause dry mouth, heartburn, nausea, abdominal pain and, in rare cases, allergic reactions. To reduce your risk of experiencing side effects from peppermint ...