Spiny Amaranth (Amaranthus spinosus): Benefits, Dosage, Safety & Evidence

Questions fréquentes

How does Spiny Amaranth work to reduce fever?

Spiny Amaranth contains bioactive compounds including betalains, rutin, quercetin, and amaranthine that contribute to its antipyretic and anti-inflammatory properties. These compounds are thought to modulate inflammatory pathways and reduce prostaglandin synthesis, which helps lower elevated body temperature. The herb has been used traditionally in Africa, Asia, and the Americas for fever management. Evidence level: C (preliminary clinical evidence).

Can I take Spiny Amaranth with blood thinners like warfarin?

Spiny Amaranth contains significant vitamin K content, which can interfere with anticoagulant medications such as warfarin. Vitamin K promotes blood clotting and may reduce the effectiveness of blood thinners, potentially increasing the risk of thrombotic events. Patients on anticoagulant therapy should avoid consuming Spiny Amaranth supplements and limit dietary intake. Consult a healthcare provider before combining this herb with any blood-thinning medication.

What is the recommended dosage for Spiny Amaranth leaf tea?

The traditional adult dosage for Spiny Amaranth leaf tea is 1-2 cups daily. The herb can also be consumed as a nutritious leafy vegetable in regular food preparation. When used as a galactagogue for lactation support, the same dosage applies. Start with lower amounts to assess tolerance. Evidence for specific dosing is limited (Level C), so following traditional preparation methods is recommended.

Is Spiny Amaranth safe to use during pregnancy?

Spiny Amaranth is considered unsafe during pregnancy and should be avoided. While the plant is nutritious as a food source, its medicinal use during pregnancy has not been established as safe. Some traditional uses include stimulating effects that may be inappropriate during gestation. Pregnant women should consult a qualified healthcare provider before using any herbal preparations. The herb may be appropriate during lactation under professional guidance.

What is Spiny Amaranth used for in traditional medicine?

Spiny Amaranth has been used traditionally across Africa, Asia, and the Americas as both food and medicine. Primary traditional uses include reducing fever, treating urinary tract conditions, supporting lactation as a galactagogue, and providing anti-inflammatory benefits. The leaves are rich in protein, betalains, rutin, and quercetin, making it a nutritive food source. Evidence supporting these uses is preliminary (Level C), based on traditional knowledge and limited clinical observation.

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

Spiny Amaranth (Amaranthus spinosus) is an edible weed and medicinal herb known for its nutritional value and various pharmacological properties, including antidiabetic and antinociceptive effects [PMID:32957510, 34041259, 29679184].

Contexte

Amaranthus spinosus L., also known as spiny amaranth or spiny pigweed, is a member of the Amaranthaceae family [PMID:42062397]. It is native to the tropical Americas but is widely distributed across most continents as an introduced species and is often regarded as a noxious weed in agricultural settings [PMID:42062397, 24497375].

Usages traditionnels

It is used in the Indian traditional system and folk medicine to treat diabetes [PMID:25339411], and has been consumed traditionally to prevent various diseases, including abdominal pain [PMID:29679184].

Composés actifs

The plant contains betalains (betacyanin and betaxanthins) [PMID:32957510], polyphenols, condensed tannins, and flavonoids [PMID:29679184]. Specific isolated compounds include the coumaroyl flavone glycoside spinoside, alpha-xylofuranosyl uracil, beta-D-ribofuranosyl adenine, beta-sitosterol glucoside [PMID:1564679 la], and a novel fatty acid ester (methyl nonacosa-14, 18, 22, 26 tetraenoate) [PMID:25339411]. It also contains beta-carotene, vitamin C, potassium, and iron [PMID:36914315].

Mécanisme d'action

Antidiabetic activity is associated with the inhibition of alpha-glucosidase, which retards glucose absorption [PMID:25339411]. Betalains are noted for anti-inflammatory and antioxidant properties [PMID:32957510].

Preuves cliniques

Preuve DObesity and Metabolic Disorders

Powdered supplementation, methanol extract, and aqueous extract significantly reduced weight gain, organ weight, and abdominal fat deposition, while improving glucose tolerance and lipid parameters in obese rats [PMID:34041259].

Preuve CDiabetes Mellitus

The plant has the potential to reduce markers of oxidative stress (serum malondialdehyde and thiobarbituric acid-reactive substances) and increase antioxidant enzymes (superoxide dismutase, catalase, glutathione, and glutathione peroxidase) in rodent models [PMID:37763234].

Preuve DPain and Inflammation

Ethanol and ethyl acetate extracts demonstrated dose-dependent antinociceptive effects, reducing acetic acid-induced abdominal contortions and increasing hot-plate reaction times in experimental animals [PMID:19429318, 29679184].

Preuve DDepression

Methanolic extract showed significant reduction in immobility in tail suspension and forced swim models of depression in animals, comparable to Escitalopram and Imipramine [PMID:25436078].

Preuve CMalaria

Betalain-rich Amaranthus spinosus displays prominent antimalarial activity [PMID:32957510].

Sécurité et effets indésirables

A. spinosus has been identified as a plant antigen capable of causing air-borne contact dermatitis in sensitive individuals [PMID:28150592]. Aqueous extracts have shown cytotoxic and apoptosis-inducing effects in human erythrocytes and Allium cepa cells [PMID:27896557].

Synthèse des preuves

The current evidence is primarily based on in vitro studies and animal models (Level D) and literature reviews (Level C). There is a lack of clinical trial data in humans to establish efficacy and safety for therapeutic use.

Sources PubMed

1.PMID: 32957510 (2020) — Therapeutic Application of Betalains: A Review. · Plants (Basel, Switzerland)
2.PMID: 42062397 (2026) — Ecological study on alien Amaranthus spinosus L. in the Egyptian Nile Valley. · Scientific reports
3.PMID: 35355878 (2022) — Bioactivity of Amaranthus spinosus L. leaf extracts and meals against Aeromonas hydrophila. · Access microbiology
4.PMID: 24497375 (2014) — EPSPS amplification in glyphosate-resistant spiny amaranth (Amaranthus spinosus): a case of gene transfer via interspecific hybridization from glyphosate-resistant Palmer amaranth (Amaranthus palmeri). · Pest management science
5.PMID: 39126450 (2024) — Suitability of raw and heat-treated Amaranthus spinosus in broiler diets: Effects on growth performance, meat antioxidant capacity, haemato-biochemical parameters, intestinal histomorphometry, and cecal volatile fatty acid profile.

Spiny Amaranth

Sources et citations

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