1 Blumenthal M, Goldberg A, Brinckmann J, eds. Herbal Medicine Expanded Commission E Monographs. Newton, MA: Integrative Medicine Communications, 2000.

2 Pizzorno JE, Murray MT, eds. Textbook of Natural Medicine. 2nd ed. New York, NY: Chuchill Livingstone, 1999.

3 Online document at: www.naturaldatabase.com

4 Inoue T, Sugimoto Y, Masuda H, Kamei C. Effects of peppermint (Mentha piperita L.) extracts on experimental allergic rhinitis in rats. Biol Pharm Bull 2001;24:92-5.

5 Madisch A, Heydenreich CJ, Wieland V, et al. Treatment of functional dyspepsia with a fixed peppermint oil and caraway oil combination preparation as compared to cisapride. A multicenter, reference-controlled, double-blind equivalence study. Arzneimittelforschung 1999;49:925-32.

6 May B, Kuntz HD, Kieser M, Kohler S. Efficacy of a fixed peppermint oil/caraway oil combination in non-ulcer dyspepsia. Arzneimittelforschung 1996;46:1149-53.

7 May B, Kohler S, Schneider B. Efficacy and tolerability of a fixed combination of peppermint oil and caraway oil in patients suffering from functional dyspepsia. Aliment Pharmacol Ther 2000;14:1671-7.

8 Gobel H, Fresenius J, Heinze A, et al. [Effectiveness of Oleum menthae piperitae and paracetamol in therapy of headache of the tension type]. [Article in German]. Nervenarzt 1996;67:672-81.

9 Akdogan M, Ozguner M, Kocak A, et al. Effects of peppermint teas on plasma testosterone, follicle-stimulating hormone, and luteinizing hormone levels and testicular tissue in rats. Urology 2004;64:394-8.

10 Kline RM, Kline JJ, Di Palma J, Barbero GJ. Enteric-coated, pH-dependent peppermint oil capsules for the treatment of irritable bowel syndrome in children. J Pediatr 2001;138:125-8.

11 Foster S. Peppermint, Menta x piperita, botanical series #306. Austin, TX: Am Botanical Council, 1990.

12 Maliakal PP, Wanwimolruk S. Effect of herbal teas on hepatic drug metabolizing enzymes in rats. J Pharm Pharmacol 2001;53:1323-9.

13 Unger M, Frank A. Simultaneous determination of the inhibitory potency of herbal extracts on the activity of six major cytochrome P450 enzymes using liquid chromatography/mass spectrometry and automated online extraction. Rapid Commun Mass Spectrom 2004;18:2273-81.

14 Dresser GK, Wacher V, Wong S, et al. Evaluation of peppermint oil and ascorbyl palmitate as inhibitors of cytochrome P4503A4 activity in vitro and in vivo. Clin Pharmacol Ther 2002;72:247-55. 11 Ibid

15 The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.