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 ten herbs in our Liver & Cholesterol loose leaf blend, along with a plain-language look at the peer-reviewed studies behind each one.
African Marigold (Tagetes erecta)
In an animal study of diet-induced hyperlipidemia, an ethanol extract of marigold flower significantly reduced total cholesterol, LDL cholesterol, malondialdehyde (a marker of oxidative damage to fats), and apolipoprotein B, a protein found in the particles that carry cholesterol into artery walls. A phytochemical review of marigold's medicinal properties cited a dedicated study finding genuine hepatoprotective activity of Tagetes erecta flowers against toxin-induced liver damage. Separately, laboratory research on quercetagetin, marigold's major flavonoid, confirmed strong antioxidant activity alongside meaningful lipid-lowering (antilipemic) potential. 🔗 Phytochemical/medicinal properties review · Quercetagetin study (PMC)
Cornflower (Centaurea cyanus)
A cosmetic safety assessment of Centaurea cyanus flower cited a dedicated study finding that cornflower intake improved liver structure and reduced hepatic degeneration, demonstrating genuine hepatoprotective effects. Separately, laboratory research on cornflower petal extract confirmed meaningful antioxidant, cytoprotective, and anti-hypertensive activity, relevant to protecting the cardiovascular system alongside the liver. A microstructural and phytochemical review of cornflower's use in herbal medicine confirmed its long traditional cholagogic (bile-stimulating) activity, supporting its inclusion in liver-supportive herbal formulas. 🔗 Hepatoprotective safety assessment · Antioxidant/cytoprotective study (PubMed) · Herbal medicine review (PMC)
Walnut Leaf (Juglans regia – Folia)
A systematic review and meta-analysis of randomized controlled trials found that walnut leaf extract significantly improves both blood glucose and lipid profile markers in people with type 2 diabetes. In the underlying randomized, double-blind, placebo-controlled clinical trial, three months of walnut leaf extract improved lipid profile and glycemic control in diabetic patients without any tangible adverse effects. A comprehensive review of walnut's cardiovascular benefits confirmed that consistent walnut consumption reduces total cholesterol and LDL cholesterol while increasing HDL cholesterol and improving the body's own gene regulation of cholesterol synthesis. 🔗 Meta-analysis (PMC) · Human clinical trial (PubMed) · Cardiovascular review (PubMed)
Dandelion Flower (Taraxacum officinale Flos)
A 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. Laboratory testing of dandelion flower extract specifically found it suppressed both reactive oxygen species and nitric oxide production while preventing lipid oxidation in vitro, supporting the flower's contribution to the plant's antioxidant profile. Separately, dandelion polysaccharides were shown to ameliorate diet-induced atherosclerosis in an animal study through combined antioxidant and anti-inflammatory mechanisms, building on earlier findings that dandelion leaf extract lowers serum lipids in models of high-fat-diet-induced liver fat accumulation. 🔗 Liver health review (PubMed) · Flower antioxidant study (PubMed) · Atherosclerosis/polysaccharide study (PMC)
Yarrow (Achillea millefolium)
In a double-blind, randomized clinical trial, three months of yarrow capsules significantly reduced liver enzymes (ALT and AST) as well as triglycerides, LDL cholesterol, and total cholesterol in people with type 2 diabetes, compared to placebo. In classic pharmacological research using an isolated perfused liver, yarrow showed a more pronounced choleretic (bile-stimulating) effect than cynarin, the primary compound responsible for artichoke's well-known liver-supportive activity. A separate study confirmed yarrow's genuine hepatoprotective, antispasmodic, and calcium-channel-blocking activity in an animal model, providing a mechanistic basis for its long traditional use in hepatobiliary disorders. 🔗 Human liver/lipid trial (PubMed) · Choleretic effect study · Hepatoprotective mechanism study (PubMed)
Rosemary (Rosmarinus officinalis)
In a randomized, double-blind clinical trial in patients with nonalcoholic fatty liver disease, eight weeks of rosemary leaf powder significantly reduced liver enzymes (ALT, AST, and others) along with fasting blood glucose and lipid markers compared to placebo. A comprehensive review of rosemary's hypolipidemic effects confirmed lipid-scavenging activity through its flavonoid content, consistent across multiple in vivo and in vitro studies. Separately, laboratory testing found that rosemary essential oil has genuine hepatoprotective potential, reducing elevated liver enzymes and increasing serum antioxidant activity in a model of toxin-induced liver damage. 🔗 Human NAFLD clinical trial · Hypolipidemic effects review (PubMed) · Hepatoprotective essential oil study
Stinging Nettle (Urtica dioica)
In a double-blind, randomized clinical trial in women with type 2 diabetes, eight weeks of nettle extract significantly decreased fasting blood glucose, triglycerides, and the liver enzyme SGPT while increasing HDL cholesterol, nitric oxide, and antioxidant enzyme activity compared to placebo. In an animal study, aqueous nettle extract given for 30 days improved the blood lipid profile — significantly decreasing total cholesterol, LDL cholesterol, and the LDL/HDL ratio — while liver enzyme testing confirmed no liver damage occurred during treatment. A separate study on healthy mice found that nettle extract consumption favorably regulated liver genes involved in fat metabolism, increasing HDL cholesterol while decreasing LDL cholesterol. 🔗 Human liver/lipid trial (PMC) · Lipid profile safety study · Liver gene regulation study
Canadian Goldenrod (Solidago canadensis)
A dedicated pharmacological study found that Canadian goldenrod herb extract had the most pronounced hepatoprotective activity among the preparations tested, significantly outperforming the reference drug silymarin (milk thistle extract) on measures of liver enzyme activity and lipid peroxidation. In a separate animal study of drug-induced liver and kidney toxicity, a hydroalcoholic extract of Canadian goldenrod produced genuine hepatorenal protective effects, attributed to its substantial flavonoid content and antioxidant potential. A phytochemical and pharmacological review confirmed Canadian goldenrod's long traditional use in folk medicine specifically for diseases of the liver, alongside the kidneys and urinary tract. 🔗 Hepatoprotective pharmacological study (PMC) · Hepatorenal protection study (PMC) · Phytochemical/pharmacological review
Agrimony (Agrimonia eupatoria)
In a randomized, double-blind, placebo-controlled clinical trial in 80 people with elevated liver enzymes, an aqueous agrimony extract significantly reduced ALT and triglyceride levels over eight weeks compared to placebo, with no severe adverse events reported. In a separate human intervention study, one month of agrimony tea consumption in healthy volunteers significantly raised plasma total antioxidant capacity, lowered inflammatory IL-6 levels, and improved HDL cholesterol, which correlated with beneficial changes in adiponectin. Earlier pharmacological research found that an agrimony-based preparation offered significant protection against drug-induced hepatocellular damage, reducing elevated liver enzymes, bilirubin, and serum cholesterol back toward normal levels. 🔗 Human liver health trial (PubMed) · Human tea/lipid trial (PubMed) · Hepatoprotective mechanism study
Calendula (Calendula officinalis)
In an animal study using a diet high in cholesterol and carbohydrates, Calendula officinalis extract reduced fat buildup in liver tissue and helped normalize markers of both oxidative stress and lipid profile, including raising depleted HDL cholesterol levels. In a separate animal study of toxin-induced liver damage, calendula extract improved disturbed liver biochemical markers, reduced inflammatory cytokines, and improved liver tissue histology in a dose-dependent manner, attributed to its antioxidant and radical-scavenging properties. A comprehensive review of calendula's therapeutic potential confirmed its established hepatoprotective activity against toxin-induced liver cytotoxicity and oxidative stress across multiple studies. 🔗 Lipid profile/liver histopathology study (PubMed) · Toxin-induced liver protection study (PMC) · Therapeutic potential review (PMC)
Why This Matters
Each of these herbs has been studied individually for its effects on the liver and cholesterol metabolism — with an unusually strong body of human clinical trial evidence for a botanical blend, including trials specifically in people with elevated liver enzymes, type 2 diabetes, and nonalcoholic fatty liver disease. We combine them because their documented modes of action support liver and cholesterol health from several different angles: reducing elevated liver enzymes, stimulating healthy bile flow, lowering LDL cholesterol and triglycerides while raising protective HDL cholesterol, and protecting liver tissue from the oxidative stress that drives long-term damage.
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 liver disease, are taking cholesterol-lowering or diabetes medication, or have a diagnosed condition affecting liver or lipid metabolism, as several of these herbs have measurable effects on liver enzymes and blood lipids.