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Medicinal Herbs Database

Explore 2,700+ herbs with evidence-based information

AllDigestiveImmune SupportNervineCardiovascular
PA
Digestive

Pennyroyal American

Hedeoma pulegioides

North American mint-family herb with similar uses to European pennyroyal; used by Indigenous peoples as insect repellent and digestive herb.

Insect repellent by many Native American tribesTopical insect repellent; very small doses as tea (digestive only)
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Digestive

Peppermint

Mentha x piperita

Peppermint is a hybrid mint, a cross between watermint and spearmint, widely used in both traditional and modern medicine. It is particularly valued for its digestive and analgesic properties. Peppermint oil is one of the most well-researched essential oils for irritable bowel syndrome.

Digestive aid1-2 enteric-coated capsules (0.2ml oil each) 3 times daily, or 1-3 cups tea daily
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Respiratory
Anti-inflammatory
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Liver Support
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Skin and Topical
Urinary
Musculoskeletal
Antioxidant
Antimicrobial
Nootropic
Nutritive
Mens Health
Womens Health
Analgesic
Metabolic
PS
Digestive

Peppermint Spanish

Mentha x piperita var. citrata

Citrus-scented variety of peppermint with similar but gentler medicinal properties. Used in European and Middle Eastern folk medicine for digestive complaints and as an aromatherapy herb.

Digestive complaints2-4g dried herb as tea or in cooking freely
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PM
Digestive

Persicaria maculosa

Persicaria maculosa

Widespread Polygonaceae weed used in folk medicine for digestive complaints and as topical antiseptic.

Digestive complaints in folk medicine5-10 g dried herb as tea
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PJ
Digestive

Petasites japonicus

Petasites japonicus

Japanese edible plant with large leaves; young stalks eaten as vegetable; traditional use for cough and pain.

coughYoung stalks as food; PA-free extract for medicinal use
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PF
Digestive

Phlomis fruticosa

Phlomis fruticosa

Mediterranean shrub with woolly leaves; used in Greek and Turkish folk medicine for digestive conditions.

digestive disorders3-5g dried herb or 2-3ml tincture daily
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PH
Digestive

Phlomis herba-venti

Phlomis herba-venti

Middle Eastern Phlomis species used in Iranian and Turkish traditional medicine.

digestive disorders2-4g dried herb daily
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PA
Digestive

Phragmites australis

Phragmites australis

Cosmopolitan wetland grass used in TCM for heat clearance, vomiting, and urinary conditions.

Clear heat in TCM15-30 g fresh rhizome or 10-15 g dried daily
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Digestive

Pineapple Weed

Matricaria discoidea

Small daisy relative found along roadsides worldwide with pineapple-like fragrance, used in folk medicine similarly to chamomile for digestive conditions.

Digestive conditions similarly to chamomile in folk medicine2-4g fresh or dried herb tea 3x daily
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PL
Digestive

Piper Longum

Piper longum

One of the three pungent herbs of Trikatu in Ayurveda; used to kindle digestive fire, enhance bioavailability of other herbs, treat respiratory disorders, and as a liver tonic.

Digestive stimulant and appetizer1-3g powder or 250mg extract twice daily
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PR
Digestive

Piper retrofractum

Piper retrofractum

Indonesian medicinal pepper used in Jamu traditional medicine; similar to Indian long pepper.

digestive disorders1-3g dried fruit daily
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PS
Digestive

Piper sarmentosum

Piper sarmentosum

Southeast Asian creeping pepper; leaves eaten as vegetable and used medicinally across the region.

digestive disorders10-30g fresh leaves or 3-6g dried daily
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PB
Digestive

Plum Bark

Prunus domestica bark

European plum tree bark used in folk medicine for digestive conditions, fever, and as astringent.

Digestive astringent2-4g dried bark
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PA
Digestive

Plumeria alba

Plumeria alba

Caribbean and Central American ornamental tree; bark and flower used in folk medicine for digestive complaints.

digestive complaintsBark decoction 5-10g 2x/day; topical latex
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PI
Digestive

Poliomintha incana

Poliomintha incana

Aromatic grey-leaved shrub of the Chihuahuan desert, used in Mexican and Southwestern Native American medicine.

Traditional Mexican remedy for digestive and respiratory conditionsTea: 1-2 tsp per cup 2x/day
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Digestive

Poncirus trifoliata

Poncirus trifoliata

Cold-hardy citrus relative; immature fruit (Zhi Shi and Zhi Ke) essential TCM herbs for digestion and stagnation.

digestive stagnation3-10g dried immature fruit tea 2x/day
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PM
Digestive

Pot Marjoram

Origanum onites

Perennial Mediterranean herb between oregano and marjoram in flavor; used in Turkish, Greek and Balkan traditional medicine.

Digestive conditions in Greek and Turkish folk medicine2–3 g dried herb as tea; 1–2 mL tincture; diluted essential oil
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Digestive

Prangos ferulacea

Prangos ferulacea

A Middle Eastern and Central Asian Apiaceae herb used for digestive, respiratory, and gynecological conditions.

Digestive conditions2-3g dried herb as tea
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PL
Digestive

Prunus lusitanica

Prunus lusitanica

Iberian evergreen cherry tree with leaves used in folk medicine similar to bay laurel.

Digestive conditions in Iberian folk medicine3-5 dried leaves as tea
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PS
Digestive

Prunus Spinosa Herb

Prunus spinosa

Thorny European shrub producing sloe berries used in folk medicine for diarrhea, sore throat, urinary conditions, and as sloe gin.

throat and mouth astringent gargle in European folk medicine2-4g dried berry or flower as tea or tincture
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