Excipient (pharmacologically inactive substance)

What is it?

Peppermint oil has been used for a variety of health conditions, including nausea, indigestion, headaches, muscle and nerve pain, and stomach and bowel conditions such as irritable bowel syndrome. Peppermint oil may also be used as a flavoring for compounded medications. Peppermint oil appears to be safe for most adults when used in small doses. Possible side effects include allergic reactions and heartburn. Patients should avoid taking peppermint oil capsules with antacids as this may break down the capsule quickly and lead to heartburn.

Patients should discuss any complementary and alternative practices with their health care providers. There is always the possibility for drug interactions, or interactions with other coordinated care.^[1]