Herbe de sumac (Rhus coriaria): Benefits, Dosage, Safety & Evidence

Questions fréquentes

How does sumac help lower blood sugar?

Sumac contains bioactive compounds including gallic acid, quercetin, and ellagic acid that may help regulate blood glucose through multiple mechanisms. These compounds demonstrate antioxidant activity that protects pancreatic beta cells, improve insulin sensitivity, and may inhibit carbohydrate-digesting enzymes like alpha-amylase and alpha-glucosidase. The tannins in sumac also contribute to glucose metabolism modulation. Evidence level: C (preliminary studies).

Does sumac interact with diabetes medications?

Sumac may have additive effects when combined with diabetes medications, potentially causing blood sugar to drop too low (hypoglycemia). If you take insulin or oral hypoglycemic medications like metformin, monitor blood glucose closely and consult your healthcare provider before using therapeutic doses of sumac. As a culinary spice at normal food amounts, interactions are unlikely. No significant drug interactions have been formally documented. Evidence level: C/Theoretical.

What is the recommended dosage of sumac for medicinal use?

For medicinal purposes, traditional and preliminary evidence supports 2-4 grams of dried sumac berries prepared as tea, or approximately 500mg of standardized extract daily. Culinary amounts (1-2 teaspoons as a spice) are considered food medicine and generally safe for long-term use. Therapeutic doses should be discussed with a qualified healthcare practitioner, especially for managing specific conditions like blood sugar concerns. Evidence level: C/Traditional.

Is sumac safe to eat during pregnancy?

Sumac is considered safe during pregnancy when consumed in normal culinary amounts as a food spice. Traditional Middle Eastern and Mediterranean cuisines have used sumac for centuries without documented harm to pregnant women. However, therapeutic or supplemental doses have not been formally studied in pregnancy, so stick to food-level amounts. Consult your healthcare provider if you have specific concerns or conditions like kidney stones. Evidence level: Traditional/Generally Recognized as Safe.

What are the medicinal benefits of sumac?

Sumac has been used traditionally in Persian and Levantine medicine primarily for digestive conditions, including diarrhea and dysentery. It also has a history of use for managing blood sugar in Middle Eastern folk medicine. The herb demonstrates significant antioxidant activity due to compounds like gallic acid and quercetin. Topically, sumac has been applied for antifungal skin conditions. Current evidence is preliminary (Level C), supporting but not confirming these traditional uses.

Can sumac cause kidney stones?

Sumac contains moderate levels of oxalates, which may contribute to kidney stone formation in susceptible individuals. If you have a history of calcium oxalate kidney stones or are sensitive to oxalates, use sumac in moderation and ensure adequate hydration. For most people consuming culinary amounts, this is not a concern. No clinical studies have specifically examined sumac and kidney stone risk. Evidence level: Theoretical based on oxalate content.

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

Rhus coriaria L. (Sumac) is a Mediterranean spice and medicinal herb recognized for its potent antioxidant and anti-inflammatory properties [PMID:33430013, PMID:37047178].

Contexte

Sumac (Rhus coriaria L.) is a deciduous shrub from the Anacardiaceae family, commonly used as a condiment, appetizer, and flavoring agent in the Mediterranean and Middle Eastern regions [PMID:33430013, PMID:32141706, PMID:34673978].

Usages traditionnels

Traditionally used in the management of hemorrhoids, wound healing, diarrhea, ulcers, eye inflammation (such as ophthalmia and conjunctivitis), hemorrhage, hematemesis, and as a stomach tonic, diuretic, and abortifacient [PMID:33430013, PMID:32141706].

Composés actifs

The plant is rich in polyphenolic compounds, including tannins (specifically hydrolysable tannins and gallotannins), flavonoids, phenolic acids (such as gallic acid), anthocyanins (including cyanidin-3-glucoside), organic acids, and essential oils [PMID:33430013, PMID:36014419, PMID:38231844, PMID:33375383].

Mécanisme d'action

Sumac exerts therapeutic benefits through powerful antioxidant capacities that modulate cellular and molecular pathophysiological instigators [PMID:33430013]. It has demonstrated xanthine oxidase inhibitory activity [PMID:37828678] and the ability to inhibit the release of pro-inflammatory cytokines such as IL-6 and IL-8 [PMID:35565724].

Preuves cliniques

Preuve BAppetite and Metabolic Markers in Obese Women with Depression

Supplementation of 3g/day for 12 weeks significantly reduced appetite scores, serum leptin, neuropeptide Y (NPY), insulin, fasting blood sugar (FBS), and HOMA-IR [PMID:36753796]

Preuve AGlycemic Indices

A meta-analysis of 6 clinical trials suggested no significant effects on fasting blood glucose or glycosylated hemoglobin (HbA1c) [PMID:34365008]

Preuve AInflammation (hs-CRP)

A systematic review and dose-response meta-analysis of 7 RCTs demonstrated a significant reduction in high-sensitivity C-reactive protein (hs-CRP) concentrations in adults [PMID:41069418]

Preuve BMuscle Pain during Exercise

Participants consuming sumac juice showed a significantly smaller increase in pain scores during and after intense aerobic exercise compared to placebo [PMID:28639865]

Preuve BHyperlipidemia

A double-blind RCT of 1000 mg/day for two months found no significant difference between sumac and placebo in mean reductions of total cholesterol, LDL, or triglycerides [PMID:27840476]

Sécurité et effets indésirables

Analysis of sumac samples from different regions showed that target hazard coefficient (THQ) values for toxic and heavy metals were well below one, suggesting they do not pose a health risk [PMID:37776395].

Synthèse des preuves

Evidence is mixed; while meta-analyses show significant effects on inflammatory markers (hs-CRP) and some RCTs show benefits for appetite and exercise-induced pain, other clinical trials regarding glycemic control and lipid-lowering effects have yielded inconclusive or non-significant results.

Sources PubMed

1.PMID: 33430013 (2021) — Pharmacological and Antioxidant Activities of Rhus coriaria L. (Sumac). · Antioxidants (Basel, Switzerland)
2.PMID: 36014419 (2022) — Rhus coriaria L. (Sumac), a Versatile and Resourceful Food Spice with Cornucopia of Polyphenols. · Molecules (Basel, Switzerland)
3.PMID: 32141706 (2020) — Phytochemical Diversity and Pharmacological Properties of Rhus coriaria. · Chemistry & biodiversity
4.PMID: 38231844 (2023) — Phytochemical Investigation of Sumac (Rhus coriaria L.) Fruits from Different Sicilian Accessions. · Foods (Basel, Switzerland)
5.PMID: 34365008 (2021) — The effect of sumac (Rhus coriaria L.) supplementation on glycemic indices: A systematic review and meta-analysis of controlled clinical trials. · Complementary therapies in medicine

Herbe de sumac

Sources et citations

Calculer une dose sûre de Herbe de sumac

Pterocarpus santalinus

Ajuga iva

Cassia auriculata

Questions fréquentes

Résumé

Contexte

Usages traditionnels

Composés actifs

Mécanisme d'action

Preuves cliniques

Sécurité et effets indésirables

Synthèse des preuves

Sources PubMed

Sources gouvernementales

Herbe de sumac

Sources et citations

Calculer une dose sûre de Herbe de sumac

Plantes associées

Pterocarpus santalinus

Ajuga iva

Cassia auriculata

Questions fréquentes

Résumé

Contexte

Usages traditionnels

Composés actifs

Mécanisme d'action

Preuves cliniques

Sécurité et effets indésirables

Synthèse des preuves

Sources PubMed

Sources gouvernementales