Custom Health Guide

Mentharil™ peppermint complex with rosemary and thyme

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In our clinic, “Mentharil” reliably gives excellent results for both upper and lower digestive symptoms, including flatulence, bloating, heartburn, reflux (GERD), IBS, and chronic constipation. It is extremely gentle, safe, and usually doesn't burp up any flavor. Each of the three major soothing digestive herbs, peppermint, rosemary and thyme, in this blend enhance and each other's actions. They also encourage flourishing of “good” bacteria in the bowel, working well with probiotics and reducing small intestinal bacterial overgrowth (SIBO). Our patients generally receive rapid relief from symptoms, and enduring improvements in digestion and elimination. Peppermint oil is delicate and can lose its potency in stomach acid. This enteric-coated soft gel allows the essential oils to move through the stomach intact to be released for optimum benefit in the small intestine and eventually the colon. “Mentharil” is best taken 30-60 minutes before meals.

About peppermint, rosemary and thyme

Peppermint naturally grows wild in central and southern Europe. Peppermint oil is high in menthol, and has been recommended for centuries by traditional herbalists to support healthy digestion. Peppermint oil has a dose-related antispasmodic effect on intestinal smooth musculature, possibly by blocking calcium channels. Peppermint has effects on the histamine, 5-hydroxytriptamine, and cholinergic systems of the gut. Peppermint appears to encourage normal rhythmic muscle movements, peristalsis, of the intestinal tract and relax spasms. In vitro, peppermint oil relaxes colon smooth muscle cells. Clinically therefore peppermint eases the abdominal distention, cramps, gas, and disturbed bowel function of IBS. Studies show that up to 89 or 94% patients report improvement of IBS symptoms after four to eight weeks on enteric-coated peppermint.

The ulcer-protective action of peppermint may be due to free radical-scavenging; and menthol in mint is a carminative, relaxing the esophageal sphincter and easing esophageal spasms. For the gall bladder, the flavonoids and terpenes in peppermint oil are anti-spasmodic, choleretic which means increasing bile flow, and they improve the solubility of bile. Studies show that peppermint oil releases morphine-induced contraction of Dodi's sphincter, all of which leads to less gall bladder pain and more free-flowing bile. In healthy volunteers, peppermint oil capsules calmed gall bladder contraction as seen on ultrasound and slowed intestinal transit time measured by a lactulose H2 breath test. Peppermint oil appears to directly act on the brush border membrane of the intestine. It acts against candida albicans which is a factor in microbial imbalance and overgrowth of noxious bacteria. Peppermint also seems to be liver protective, likely due to its antioxidant properties.

Rosemary is a fragrant evergreen herb native to the Mediterranean area, used medicinally since ancient times. Its oil has shown the ability to help heal heartburn and even ulcers, by strengthening the mucosal lining of the stomach and duodenum. Several studies have shown that rosemary inhibits the growth of pathogenic bacteria including E.coli, salmonella and shigella strains, thus encouraging a healthy gut bacterial balance. Rosemary has antioxidant ability due to its constituent carnosic acid that helps food preservation, slows lipid peroxidation and may support natural vitamin E in tissues. In Europe rosemary is formally approved as a dyspepsia remedy. For the liver, rosemary is protective against environmental toxins, it reduces the amounts of liver enzymes that leak out of cells, prevents oxidative damage to liver cells, and increases healthy bile flow. Research reviews also found that rosemary reduces the body's chemical messengers ofinflammation: it reduces the production of leukotriene B4 and inhibits the complement system. There is also evidence that rosemary slows brain aging, possibly due to its antioxidant carnosic acid, improves cognitive ability on tests, and may increase memory and concentration. Rosemary's carnosic acid may also protect the eye from macular degeneration. .

Thyme is a relative of mint and rosemary, also native to the Mediterranean region, and has been used medicinally since the 1500's. The volatile oil in thyme includes thymol and carvacol, which are antispasmodic, carminative and antibacterial against certain Staphylococcus species, Bacillus subtilis and E. coli, relieving intestinal cramping and encouraging good flora. Thyme also includes flavonoids apigenin and thymonin which are potent antioxidants. There is evidence that thyme may slow brain cell aging, helps brain function and boosts the levels of healthy omega-3 fats in brain cell membranes, and also in the heart and kidneys.


1 Enteric-coated soft gel provides: Peppermint (Mentha piperita) Leaf Oil Extract0.2 mL, Rosemary (Rosmarinus officinalis) Leaf and Stem Oil Extract0.02 mL, Thyme (Thymus vulgaris) Whole Plant Oil Extract0.02 mL

Other Ingredients: gelatin, vegetable glycerin, modified cellulose, silica, titanium dioxide color, fractionated coconut oil, sodium alginate, and stearic acid.

Free of: - This product does Not contain: artificial coloring, artificial flavoring, preservatives, parabens, dairy/milk/casein products, gluten, corn, ingredients of animal origin, shellfish, egg, salt, soy, sugar, wheat, yeast.


Always take natural remedies under the supervision of your health care provider. Do not use 'Mentharil' without the advice of your healthcare professional if you are also taking anti-platelet drugs including but not limited to Plavix, warfarin, or nonsteroidal anti-inflammatory drugs (NSAIDs) such as diclofenac, ibuprofen, naproxen, or heparin: there is preliminary evidence that rosemary inhibits platelet aggregation and with anticoagulant or antiplatelet drugs might increase the risk of bruising and bleeding. Check with your health care provider if you take Alzheimer's drugs or anti-cholinergic drugs as thyme may interact with them. Peppermint side effects are rare, but keep the oil away from children: the toxic dose is 50,000mg for a 100lb. human. Do not use 'Mentharil' during pregnancy or nursing unless under the guidance of your physician, there is insufficient data about safety during pregnancy.


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60 capsules

Benefits of Consistency

“With the right vitamins, herbs and foods, your health can continue to improve over time, as vibrant new tissues replace old cells. Our patients often feel increasing vitality as medical tests get better and better, year after year.”

- Dr. Rachelle Herdman

Dr. Herdman is a graduate or member of the following organizations:

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