How does Euryale ferox work as a kidney tonic?

Euryale ferox seeds contain flavonoids such as kaempferol and quercetin, which exhibit antioxidant properties that may support kidney health. The seeds are also rich in starch, proteins, and saponins, contributing to their nutritive and restorative effects. In Traditional Chinese Medicine, Euryale ferox is classified as an astringent herb that helps consolidate kidney essence and treat seminal emission. However, modern mechanistic research is limited, and evidence remains at Level C (preliminary or traditional use).

Does Euryale ferox interact with any medications?

There are currently no well-documented drug interactions for Euryale ferox in scientific literature. As the seeds are primarily composed of dietary starch, proteins, and flavonoids, they have low interaction potential. However, clinical research is limited (Evidence Level C), so individuals taking prescription diuretics, kidney medications, or anticoagulants should consult a healthcare provider before using Euryale ferox therapeutically.

What is the recommended dosage for Euryale ferox seeds?

The traditional adult dosage for Euryale ferox is 10-15 grams of seeds daily, consumed as food or prepared as a decoction. In Traditional Chinese Medicine and Ayurveda, the seeds are commonly cooked in soups, porridges, or brewed into tea. This dosage is based on traditional use rather than standardized clinical trials. Users should follow product-specific instructions or consult a qualified herbal practitioner for personalized guidance.

Is Euryale ferox safe during pregnancy?

Euryale ferox seeds are considered safe for consumption during pregnancy when eaten as a food in normal dietary amounts. The seeds have a long history of use as a nutritive food in Asian cuisine and are not known to contain compounds that pose pregnancy risks. However, pregnant individuals should consult their healthcare provider before using any herbal products therapeutically and should avoid excessive intake due to the seeds' binding properties.

What are the side effects of Euryale ferox?

Euryale ferox is generally well-tolerated when consumed in recommended amounts. The primary side effect is constipation, which can occur with excessive consumption due to the seeds' astringent, binding nature. For this reason, Euryale ferox is contraindicated in individuals with existing constipation. Moderate intake within the traditional dosage range of 10-15 grams daily typically does not cause adverse effects in healthy individuals.

Euryale ferox (Euryale ferox)

PubMed-compiled information sheet

This sheet was compiled from PubMed (NIH) abstracts using AI assistance. Every factual claim is cited to a real PubMed article (see the source list). It has not yet been human-reviewed — confirm with a healthcare provider before use.

Compiled from 30 PubMed articles · model: gemma4:31b

Summary

Euryale ferox, also known as foxnut or makhana, is an aquatic plant used as both a nutritious food and a medicinal herb in Asia [PMID:36183158, PMID:36160968]. It is recognized for its potential antioxidant, antidiabetic, and cardioprotective properties [PMID:36183158, PMID:37298878].

Background

Euryale ferox (family Nymphaeaceae) is a rooted macro-hydrophyte grown primarily in India, China, Japan, and Korea [PMID:30091404, PMID:36183158]. It is an annual aquatic crop whose seeds are processed into edible pops [PMID:30091404, PMID:33964663].

Traditional uses

In traditional oriental medicine, it has been used to treat kidney problems, chronic diarrhea, excessive leucorrhea, and hypofunction of the spleen [PMID:16628469]. It is also associated with marital rituals due to perceived spermatogenic properties [PMID:30091404].

Active compounds

The plant contains carbohydrates, proteins, fiber, vitamins, minerals, and polyphenols [PMID:36183158]. Specific compounds identified in the seeds and shells include polysaccharides, sesquineolignans, tocopherols, cyclic dipeptides, glucosylsterols, cerebrosides, triterpenoids [PMID:37298878], and phenolics such as gallic acid, digalloylhexoside, catechin, procyanidin B2, epicatechin, ellagic acid, and epicatechin gallate [PMID:36680508]. Corilagin and geraniin have also been isolated from the shell [PMID:41503851].

Mechanism of action

E. ferox may exert anti-inflammatory effects via corilagin [PMID:36900496]. It has been shown to activate Nrf2 and MAPK signaling pathways to regulate downstream proteins like Bax/Bcl-2 and MMP-1 [PMID:36290604]. In the context of diabetic kidney disease, it is suggested to target proteins such as PPARA, LPL, and FABP1 [PMID:36165567].

Clinical evidence

Evidence DMyocardial ischemic reperfusion injury

Seeds reduced myocardial ischemic reperfusion injury in rat models [PMID:16628469]

Evidence DOral ulcer

Seed shell extract showed therapeutic effects on oral ulcers in rats by modulating Keap1, Nrf2, and HO-1 proteins [PMID:38708514]

Evidence DCancer (In vitro)

Ethanol extract of the shell inhibited proliferation of HeLa and A2780 cells, with corilagin showing the strongest inhibitory effect on HeLa cells [PMID:41503851]

Evidence DBacterial Infection (In vitro)

Seed shell polyphenol extract (EFSSPE) showed antimicrobial activity against Salmonella Typhimurium by damaging cell wall integrity [PMID:38957974]

Evidence summary

The current evidence is primarily based on in vitro studies, animal models (rats), and literature reviews. There are no human clinical trials provided in the source abstracts to establish clinical efficacy or safety.

PubMed sources

1.PMID: 36297790 (2022) — Bio-Fabrication of Euryale ferox (Makhana) Leaf Silver Nanoparticles and Their Antibacterial, Antioxidant and Cytotoxic Potential. · Plants (Basel, Switzerland)
2.PMID: 30091404 (2018) — Aquacultural, Nutritional and Therapeutic Biology of Delicious Seeds of Euryale ferox Salisb. : A Minireview. · Current pharmaceutical biotechnology
3.PMID: 30361812 (2019) — Physiological and biochemical responses of Makhana (Euryale ferox) to gamma irradiation. · Journal of biological physics
4.PMID: 37893687 (2023) — Non-Traditional Starches, Their Properties, and Applications. · Foods (Basel, Switzerland)
5.PMID: 36183158 (2022) — Euryale ferox, a prominent superfood: Nutritional, pharmaceutical, and its economical importance.

Euryale ferox

Sources & Citations

Cotoneaster integerrimus

Mountain Pepper

Alexanders

Summary

Background

Traditional uses

Active compounds

Mechanism of action

Clinical evidence

Evidence summary

PubMed sources

Government sources

Euryale ferox

Sources & Citations

Related Herbs

Cotoneaster integerrimus

Mountain Pepper

Alexanders

Summary

Background

Traditional uses

Active compounds

Mechanism of action

Clinical evidence

Evidence summary

PubMed sources

Government sources