Parkinsonia aculeata (Parkinsonia aculeata): Benefits, Dosage, Safety & Evidence

Frequently asked questions

How does Parkinsonia aculeata work as an antimalarial and antipyretic?

Parkinsonia aculeata contains bioactive compounds including parkinsoniine, flavonoids, alkaloids, and tannins that contribute to its medicinal effects. Laboratory studies suggest these compounds exhibit antimalarial and antimicrobial properties, likely through inhibition of pathogen growth. The plant's antipyretic action is attributed to these compounds, though the exact molecular mechanisms remain poorly understood. Current evidence is limited to in vitro and animal studies (Evidence Level C), with no human clinical trials establishing definitive mechanisms of action.

Does Parkinsonia aculeata interact with any medications?

There is limited research on specific drug interactions for Parkinsonia aculeata. The plant contains tannins and alkaloids that could theoretically affect the absorption or metabolism of certain medications. Due to its potential effects on the gastrointestinal system and unknown pharmacokinetic properties, caution is advised when combining with antimalarial drugs, antipyretics, or medications metabolized by the liver. Patients taking prescription medications should consult a healthcare provider before using Parkinsonia aculeata preparations.

What is the recommended dosage of Parkinsonia aculeata?

Traditional use suggests a dosage of 5-10 grams of bark or leaves prepared as a decoction for fever and malaria management. This typically involves boiling the plant material in water and consuming the resulting liquid. However, there are no standardized, clinically validated dosing guidelines. Dosage recommendations are based on ethnobotanical tradition rather than clinical trials (Evidence Level C). Users should start with lower doses and consult a qualified herbalist or healthcare practitioner for personalized guidance.

Is Parkinsonia aculeata safe during pregnancy and breastfeeding?

Parkinsonia aculeata is considered unsafe during pregnancy and is contraindicated. The plant contains alkaloids and other compounds that may stimulate uterine contractions or cause harm to fetal development. Traditional use data and phytochemical analysis suggest potential reproductive toxicity. Women who are pregnant, planning to become pregnant, or breastfeeding should avoid all preparations of Parkinsonia aculeata. There is insufficient safety data for use during lactation, so breastfeeding women should also avoid this herb.

What are the side effects of Parkinsonia aculeata?

The most commonly reported side effect of Parkinsonia aculeata is gastrointestinal upset, including nausea, stomach discomfort, and potential diarrhea. These effects are typically associated with the tannin content and may vary based on preparation method and dosage. Due to limited clinical research (Evidence Level C), the full range of potential adverse effects is not well documented. Individuals with pre-existing gastrointestinal conditions should use caution. Discontinue use if adverse reactions occur and seek medical attention if symptoms persist.

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

Parkinsonia aculeata is a perennial legume used traditionally as an antidiabetic agent [PMID:34481874, PMID:26940900]. Research indicates it may possess hypoglycemic, hypolipidemic, and antioxidant properties [PMID:17276638, PMID:23090786].

Background

Parkinsonia aculeata (also known as Mexican Palo Verde) is a medium tree and perennial legume found in regions such as the semi-arid Xingó region of Northeast Brazil and the Sonoran Desert [PMID:34481874, PMID:41109597, PMID:18558626].

Traditional uses

It is recognized by local populations in Brazil as an antidiabetic agent, commonly prepared as an infusion of the aerial parts and consumed throughout the day to manage diabetes-related complications [PMID:34481874, PMID:26940900, PMID:27372351].

Active compounds

The plant contains flavonoids (including parkintin), anthocyanins, phenolics (such as gallic acid and vanillic acid hexoside), fatty acids, and macrocyclic monoterpene O-glycosides (parkinsenes A-E) [PMID:3292214도, PMID:23090786, PMID:15700645, PMID:27186016].

Mechanism of action

In diet-induced obesity mouse models, the herb may improve insulin resistance by enhancing insulin signaling and mitochondrial biogenesis [PMID:26940900] and combating oxidative stress by increasing the PPARγ/CuZn-SOD axis expression [PMID:27372351].

Clinical evidence

Evidence DHyperglycemia/Diabetes

Oral administration of aqueous or hydroethanolic extracts significantly reduced serum and urinary glucose and improved hepatic glycogen in alloxan-induced diabetic rats [PMID:17276638, PMID:20953386].

Evidence DInsulin Resistance/Obesity

Hydroethanolic extract (HEPa/EtOAc) reduced fasting serum glucose, insulin levels, and HOMA-IR while reducing circulating TNF-α and IL-6 in high-fat diet mice [PMID:26940900, PMID:27372351].

Evidence DDyslipidemia

The polar fraction of aerial parts extract reduced proinflammatory interleukin levels in white adipose tissue and improved imbalanced metabolic profiles in obese rats [PMID:34481874].

Evidence DBacterial Infection

Leaf extracts demonstrated antibacterial activity, particularly against S. aureus ATCC 29213 [PMID:40433030].

Safety & adverse effects

Acute oral toxicity tests of the polar fraction (PfrHEPA) at 2000 mg/kg in rats did not indicate acute toxicity [PMID:32440335]. Repeated dose 28-day oral toxicity studies (35, 70, or 140 mg/kg) were conducted to evaluate safety [PMID:34484670].

Evidence summary

The current evidence is based on in vitro studies and animal models (rats and mice), indicating potential antidiabetic and antioxidant effects; there are no human clinical trials provided.

PubMed sources

1.PMID: 38591059 (2024) — Cytotoxic activity of bimetallic Ag@Se green synthesized nanoparticles using Jerusalem Thorn (Parkinsonia aculeata). · Frontiers in chemistry
2.PMID: 34481874 (2022) — Polar fraction from Parkinsonia aculeata aerial parts extract improves imbalanced metabolic profile and reduces proinflammatory interleukin levels in white adipose tissue in obese rats induced by western diet. · Journal of ethnopharmacology
3.PMID: 41109597 (2025) — Prevalence, host range, and characterization of multiple Palo verde broom emaravirus genomes and eriophyid mites from Parkinsonia spp. in Arizona. · Virus research
4.PMID: 26940900 (2016) — Parkinsonia aculeata (Caesalpineaceae) improves high-fat diet-induced insulin resistance in mice through the enhancement of insulin signaling and mitochondrial biogenesis. · Journal of ethnopharmacology
5.PMID: 32853027

Parkinsonia aculeata

Sources & Citations

Calculate a safe dose of Parkinsonia aculeata