Peppermint

What the research shows

Not enough

published research on this page yet

A mint plant that is a cross between watermint and spearmint.

It is used in cooking and medicine and gives menthol and menthone.1

What research says

Found in some samples or products

These come from where it was grown, how it was processed or cooked, or what it was made into. They are not about the ingredient itself, so the signal does not count them.

  • Tea contamination2

    Peppermint tea bags sold in Israel often held weed chemicals called dehydro PAs, at levels some call worrying.

  • Pesticide residues in tea3

    Pesticides like chlorpyrifos were found in peppermint samples, and some exceeded EU limits set for tea.

How it’s made and used

The signal at the top counts the findings in people and in animal and lab studies. A concern in studies of people outranks animal and lab studies, and “No concerns” needs at least one finding in people. When most findings in people point one way, the page leans that way (“Mostly”), and every finding is still shown. Findings whose study type is not stated are shown but not counted. This page is a reference, not medical advice. It describes what regulators and published research say. Talk to a doctor or dietitian about your own diet.

Products

The 6 most-scanned of 1,888 products on Open Food Facts that list peppermint.

  • Mint Intense Dark Chocolate Lindt Excellence · 100 g 1 additive
  • Dark chocolate covered pretzels with peppermint pieces, peppermint Nestlé · 21 g 2 additives
  • Pfefferminze RITTER SPORT · 100 g 1 additive
  • Pure Peppermint Twinings · 20 teabags 0 additives
  • Wellbeing Collection Twinings · 20 = 4 x Sleep, Glow, Digest, Detox, Defence each 0 additives
  • Glow Twinings 0 additives

References

  1. 1Peppermint. Wikipedia. Accessed September 29, 2026. CC BY-SA 4.0.
  2. 2Shimshoni JA, Duebecke A, Mulder PP, Cuneah O, Barel S. Pyrrolizidine and tropane alkaloids in teas and the herbal teas peppermint, rooibos and chamomile in the Israeli market. Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2015;32(12):2058-67. doi:10.1080/19440049.2015.1087651
  3. 3Sadło S, Szpyrka E, Rogozińska K, Rupar J. [Occurrence of some pesticides residues in peppermint Mentha piperita L. in 2003-2005]. Rocz Panstw Zakl Hig. 2006;57(3):211-6.
  4. 4Sajkowska S, Moskwa J, Socha K, Leśniewska B. Evaluation of the Bioaccessibility of Essential and Toxic Trace Elements in Basil, Peppermint, and Rosemary Using an In Vitro Gastrointestinal Digestion Model. J Agric Food Chem. 2025;73(10):6189-6204. doi:10.1021/acs.jafc.4c10940