Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Mint, particularly peppermint (Mentha piperita), has a long history of traditional use for digestive complaints, including indigestion. This traditional use is supported by a moderate level of scientific evidence. Peppermint oil contains menthol, which has antispasmodic properties that help relax the smooth muscles of the gastrointestinal tract. Several clinical studies suggest that peppermint oil can reduce symptoms such as bloating, abdominal pain, and discomfort associated with indigestion or dyspepsia. For example, enteric-coated peppermint oil capsules have been shown to improve symptoms in patients with irritable bowel syndrome (IBS), which frequently overlaps with functional dyspepsia. Its mechanism of action involves blocking calcium channels in the gut wall, leading to muscle relaxation and reduced spasms.

However, while there is consistent evidence supporting peppermint oil’s efficacy in IBS, evidence specifically for generic indigestion or non-specific dyspepsia is less robust, though promising. It is important to note that peppermint may worsen symptoms of acid reflux in some individuals by relaxing the lower esophageal sphincter. Most scientific reviews rate the evidence for peppermint’s benefit in dyspepsia and indigestion as moderate, but not definitive. Thus, while the use of mint for indigestion is both traditional and supported by some scientific research, it is not universally recommended for all digestive complaints, especially those involving reflux.

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