Herbal traditions have used these plants for centuries, but we like to go a step further and look at what modern research actually shows. Below are nine herbs in our Detox loose leaf blend, along with a plain-language look at the peer-reviewed studies behind each one — covering support for the arteries, liver, urinary tract, digestive tract, and lymphatic system.
African Marigold (Tagetes erecta)
In an animal study, marigold flower extract protected the liver against toxin-induced oxidative damage, lowering elevated liver enzyme markers and reducing the incidence of liver cell injury. Separately, laboratory testing found pronounced antioxidant potential in marigold flower extract, supporting the plant's traditional use in clearing waste from the body. In a study on the plant's traditional use to promote urine flow, a hydroethanolic extract of marigold flowers produced measurable diuretic and natriuretic (sodium-excreting) effects, contributing to the preclinical validation of its use for kidney and urinary support. 🔗 Hepatoprotective study · Antioxidant study (PubMed) · Diuretic study (PubMed)
Elder Flower (Sambucus nigra flos)
In an animal model of kidney damage, elder flower extract reduced markers of lipid peroxidation, drawing on the flower's high rutin content and its established antioxidant and anti-inflammatory properties to protect kidney tissue. A scientific review of herbal diuretics identified Sambucus nigra among the most promising plant genuses for promoting diuresis, based on measurable increases in urine output and sodium excretion. Separately, an animal study found that Sambucus nigra helped counteract toxin-induced injury to both the liver and kidneys, working through anti-inflammatory, antioxidant, and anti-apoptotic pathways in both organs. 🔗 Kidney protection study (PMC) · Diuretic review (PubMed) · Liver/kidney protection study (PMC)
Silver Birch Leaves (Betula pendula – Folia)
Birch leaves are officially recognized in Europe as a traditional herbal medicine to increase urine output for flushing the urinary tract, and a modern urinary metabolomics study confirmed that birch leaf extract produces measurable shifts in bile acid metabolism and markers of hepatic detoxification. Separately, laboratory testing found that an aqueous birch leaf extract inhibited the growth and cell division specifically of activated inflammatory lymphocytes, providing a rational basis for the plant's traditional use in supporting the lymphatic and immune systems. A further study confirmed that dry birch leaf extract has measurable antioxidant activity, relevant to protecting tissues from the oxidative burden of everyday toxin exposure. 🔗 Urinary metabolomics study (PMC) · Lymphocyte study (PubMed) · Antioxidant activity study (PubMed)
Cleavers (Galium aparine)
Laboratory testing of Galium aparine found strong antioxidant capacity across multiple extract fractions, particularly in the aqueous fraction, supporting the plant's long traditional use as a "blood cleanser." A more recent study demonstrated that cleavers extract had antimicrobial and antioxidant properties alongside genuine wound-healing effects, improving cell migration and tissue repair in laboratory testing without any toxicity to healthy cells. Separately, a phytochemical and immunomodulatory study found that ethanolic cleavers extract modulates immune cell activity in the lymphocyte blast transformation reaction, aligning with its traditional use as a lymphatic tonic and drainage remedy. 🔗 Antioxidant study (PubMed) · Wound healing/antimicrobial study (PMC) · Immunomodulatory study (PMC)
English Walnut Leaves (Juglans regia – Folia)
In an animal study, walnut leaf extract showed potent hepatoprotective activity against toxin-induced liver injury, lowering elevated liver enzymes and reducing oxidative damage in liver tissue. Separately, walnut leaf extracts were shown in laboratory testing to be strong scavengers of multiple reactive oxygen and nitrogen species — the free radicals implicated in cellular and tissue damage — supporting the plant's traditional use as a "blood purifier." In a further animal study, walnut leaf extract significantly lowered elevated liver enzymes and bilirubin caused by a chemotherapy drug, with accompanying tissue analysis showing reduced cell swelling and inflammation in the liver. 🔗 Hepatoprotective study (PubMed) · Free radical scavenging study · Chemotherapy-induced liver injury study
Field Horsetail (Equisetum arvense)
In a randomized, double-blind clinical trial in healthy volunteers, a standardized horsetail extract produced a diuretic effect stronger than placebo and equivalent to the pharmaceutical drug hydrochlorothiazide, without causing significant changes in electrolyte elimination. In a separate double-blind, randomized clinical trial, horsetail extract produced a measurable antihypertensive effect compared to placebo, supporting its traditional regulated use as a diuretic phytomedicine. In a human study on kidney and urinary health, an aqueous horsetail extract significantly stimulated the secretion of Tamm-Horsfall protein in urine after oral intake and reduced the ability of infection-causing bacteria to interact with bladder cells, offering a mechanistic explanation for its traditional use in flushing the urinary tract. 🔗 Diuretic clinical trial (PubMed) · Antihypertensive clinical trial (PubMed) · Urinary tract protection study (PubMed)
Dandelion Leaf (Taraxacum officinale)
In a pilot clinical study, volunteers who ingested a hydroethanolic dandelion leaf extract showed a significant increase in both the frequency and volume of urination compared to baseline, providing the first clinical substantiation of the plant's long traditional use as a diuretic. A leaf-specific animal study found that Taraxacum officinale leaf extract had a hepatoprotective effect against toxin-induced liver injury, helping preserve normal liver tissue architecture. A recent narrative review of dandelion's role in liver health described how its bioactive compounds — including taraxasterol — modulate inflammatory and oxidative stress pathways, helping to prevent liver damage from toxic agents. 🔗 Diuretic clinical study (PubMed) · Leaf hepatoprotective study (PubMed) · Liver health review (PubMed)
Agrimony (Agrimonia eupatoria)
In a randomized, double-blind, placebo-controlled clinical trial in 80 people with elevated liver enzymes, an aqueous agrimony extract measurably improved liver health markers over eight weeks, an effect attributed to the plant's lipid-lowering and antioxidant activities. In an animal study of alcohol-induced digestive tract damage, agrimony leaf extract reduced the area of stomach ulceration, increased protective mucus production, and boosted the body's own antioxidant enzyme activity in stomach tissue. A separate phytochemical and pharmacological study confirmed that agrimony herb extract has pronounced anti-inflammatory and hepatoprotective activity, reducing markers of lipid damage and stabilizing liver cell membranes. 🔗 Human liver health trial (PubMed) · Digestive tract protection study (PMC) · Anti-inflammatory/hepatoprotective study (PubMed)
Stinging Nettle (Urtica dioica)
In a pharmacological study, a continuous perfusion of aqueous nettle extract produced a dose-dependent reduction in blood pressure alongside a correlated increase in diuresis and sodium excretion, supporting the plant's traditional use for both cardiovascular and urinary support. Separately, an animal study found that nettle extract reduced lipid peroxidation and liver enzyme markers while boosting the body's antioxidant defense system following toxin-induced liver damage. A review of dietary plants for kidney stone prevention identified nettle among the botanicals with meaningful evidence for diuretic, antispasmodic, and antioxidant activity relevant to urinary tract health. 🔗 Diuretic/blood pressure study (PubMed) · Hepatoprotective study (PubMed) · Kidney stone prevention review (PubMed)
Why This Matters
Each of these herbs has been studied individually for its effects on one or more of the body's major elimination and filtration pathways — the liver, kidneys and urinary tract, digestive tract, blood vessels, and lymphatic system — largely in laboratory and animal studies, with a valuable number of human clinical trials for herbs like horsetail, dandelion leaf, and agrimony. We combine them because their documented modes of action work together across the body's different detoxification systems: from supporting liver enzyme function and antioxidant capacity, to promoting healthy urine flow, protecting the digestive lining, and modulating immune and lymphatic activity.
This post is for educational purposes and summarizes existing scientific literature. It is not medical advice, and our blend is not intended to diagnose, treat, cure, or prevent any disease. Please consult a healthcare provider before using herbal supplements, especially if you have kidney or liver disease, are pregnant, or are taking diuretic, blood pressure, or blood-thinning medication, as several of these herbs have shown measurable effects on fluid balance and liver enzyme activity.