Myrica Esculenta (Myrica esculenta): Benefits, Dosage, Safety & Evidence

Questions fréquentes

How does Myrica esculenta work medicinally?

Myrica esculenta contains bioactive compounds including myricitrin, taraxerol, alpha-amyrin, and phenolic acids that contribute to its therapeutic effects. Myricitrin exhibits anti-inflammatory and antioxidant properties, while triterpenoids like taraxerol and alpha-amyrin demonstrate anti-inflammatory and wound-healing activity. These compounds work synergistically to support digestive, respiratory, and nervous system functions, though the exact mechanisms require further research (Evidence Level C).

Does Myrica esculenta interact with any medications?

Limited clinical data exists on specific drug interactions for Myrica esculenta. Due to its anti-inflammatory constituents and effects on the digestive system, theoretical interactions may occur with anticoagulant medications, antiplatelet drugs, and pharmaceuticals metabolized through hepatic pathways. Patients taking prescription medications should consult a qualified healthcare provider before using Myrica esculenta, as systematic interaction studies have not been conducted (Evidence Level C).

What is the recommended dosage for Myrica esculenta bark?

The traditional adult dosage for Myrica esculenta is 3–6 grams of bark powder or decoction daily, typically divided into two or three doses. This dosage range is based on Ayurvedic and folk medicine traditions from Nepal and India. Higher doses may increase the risk of gastric irritation and nausea. Individuals new to this herb should start at the lower end of the dosage range and consult a qualified herbalist for personalized guidance (Evidence Level C, Traditional).

Is Myrica esculenta safe during pregnancy and breastfeeding?

Myrica esculenta is considered unsafe during pregnancy and should be avoided. High doses have been associated with potential uterine effects, and safety data during lactation is lacking. Women who are pregnant, attempting to conceive, or breastfeeding should not use Myrica esculenta preparations. Additionally, individuals with known allergies to plants in the Myricaceae family should avoid this herb entirely (Evidence Level C).

What are the traditional uses of Myrica esculenta?

Myrica esculenta has been used in Ayurvedic and folk medicine throughout the Himalayan foothills of Nepal and India for treating fever, diarrhea, cough, headache, and earache. Traditional practitioners employ the bark primarily for conditions affecting the digestive, respiratory, and nervous systems. The evergreen tree has a long history of ethnomedicinal use, though modern clinical trials validating these applications remain limited (Evidence Level C, Traditional).

What side effects can Myrica esculenta cause?

Myrica esculenta may cause mild side effects including nausea and gastric irritation, particularly at higher doses or when taken on an empty stomach. These gastrointestinal effects are generally dose-dependent and may be minimized by taking the herb with food. Individuals with sensitive digestion or pre-existing gastric conditions should exercise caution. Discontinue use if persistent discomfort occurs and consult a healthcare provider if symptoms worsen (Evidence Level C).

Fiche d'information compilée à partir de PubMed

Cette fiche a été compilée à partir de résumés PubMed (NIH) avec l'assistance d'une IA. Chaque affirmation factuelle est citée par un article PubMed réel (voir la liste des sources). Elle n'a pas encore été révisée par un humain — confirmez auprès d'un professionnel de santé avant utilisation.

Compilé à partir de 30 articles PubMed · modèle : gemma4:31b

Résumé

Myrica esculenta, also known as Kaiphala or Katphala, is a medicinal plant found in the sub-tropical Himalayas used in Ayurveda and folk medicine [PMID:29544902, PMID:31159283].

Contexte

Myrica esculenta (Family: Myricaceae) is a tree species native to the Indian Himalayas [PMID:29544902, PMID:39917935]. It is recognized in the ayurvedic pharmacopeia and is currently facing threats of extinction due to illicit harvesting and habitat loss [PMID:31159283, PMID:22557553].

Usages traditionnels

In folk medicine and Ayurveda, it is used to treat asthma, cough, chronic bronchitis, ulcers, inflammation, anemia, fever, diarrhea, and ear, nose, and throat disorders [PMID:31159283, PMID:39917935]. Ayurvedic literature specifically mentions the use of fruit and bark for gulma, jvara, arsa, grahani, pandu roga, hrillasa, mukha roga, kasa, svasa, agnimandhya, aruchi, meha, and kantharoga [PMID:32912644].

Composés actifs

The plant contains diarylheptanoids, flavonoids, terpenes, tannins, and glycosides [PMID:36330658]. Specific identified compounds include myricitrin [PMID:30474534], 3-Acetylmyricadiol [PMID:33745430], myricanone, myricetin, myricolol, $\beta$-sitosterol, and myresculoside [PMID:39715675, PMID:20930414]. Fruits are rich in chlorogenic acid, caffeic acid, myricetin, quercetin, and ascorbic acid [PMID:41334135].

Mécanisme d'action

Myricitrin is reported to possess anti-oxidative, anti-inflammatory, and anti-nociceptive activities [PMID:30474534]. 3-Acetylmyricadiol inhibits the production of pro-inflammatory mediators including nitric oxide, IL-6, and TNF-$\alpha$ in macrophages [PMID:33745430]. Myricanol-9-acetate induces ROS-dependent mitochondrial-mediated apoptosis in MCF-7 cancer cells [PMID:34132183].

Preuves cliniques

Preuve DParkinson's Disease (Animal Model)

Methanolic leaf extract (50, 100, 200 mg/kg) demonstrated significant dose-dependent neuroprotective potential in haloperidol-induced Wistar rats [PMID:32912644]

Preuve DAllergic Reactions (Animal Model)

Stem bark extract (75 and 150 mg/kg) significantly inhibited eosinophil accumulation in the pleural cavity and reduced plasma exudation in mice [PMID:21331196]

Preuve DSpermatogenesis Dysfunction (Animal Model)

Aqueous fruit extract (500 mg/kg) showed protective effects against cyclophosphamide-induced dysfunction in rats via antioxidant signaling pathways [PMID:41334135]

Preuve DInflammation (Animal Model)

Essential oil from stem bark exhibited significant topical anti-inflammatory activity in Swiss albino mice ears [PMID:22260222]

Synthèse des preuves

The current evidence is primarily based on in vitro studies and animal models (Level D), focusing on antioxidant, anti-inflammatory, and neuroprotective properties. No human clinical trials were provided.

Sources PubMed

1.PMID: 30474534 (2020) — Effects of Myricitrin and Relevant Molecular Mechanisms. · Current stem cell research & therapy
2.PMID: 29544902 (2019) — Pharmacognostic characterization of Myrica esculenta leaves. · Journal of Ayurveda and integrative medicine
3.PMID: 36330658 (2022) — Myrica esculenta Buch.-Ham. (ex D. Don): A Review on its Phytochemistry, Pharmacology and Nutritional Potential. · Combinatorial chemistry & high throughput screening
4.PMID: 31159283 (2019) — Myrica esculenta Buch.-Ham. ex D. Don: A Natural Source for Health Promotion and Disease Prevention. · Plants (Basel, Switzerland)
5.PMID: 37960019 (2023) — Myrica esculenta Leaf Extract-Assisted Green Synthesis of Porous Magnetic Chitosan Composites for Fast Removal of Cd (II) from Water: Kinetics and Thermodynamics of Adsorption.

Myrica Esculenta

Sources et citations

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