Home Ingredients Artichoke Leaf (Cynara scolymus / Cynara cardunculus)
CardiovascularGut Health

Artichoke Leaf (Cynara scolymus / Cynara cardunculus)

Cynara scolymus
Evidence Level
Moderate
2 Clinical Trials
5 Documented Benefits
3/5 Evidence Score

Artichoke leaf extract is one of the most studied herbal hepatoprotective and choleretic (bile-stimulating) agents in European herbal medicine. Distinguished by cynarin and chlorogenic acid content. Approved by the European Scientific Cooperative on Phytotherapy (ESCOP) and German Commission E for dyspeptic complaints. Reproducible but modest cholesterol lowering across randomized trials, plus a good multicentre trial for functional dyspepsia. The IBS data are preliminary and come from an uncontrolled, open-label study.

Studied Dose 320-1,920 mg/day standardized leaf extract; clinical trials commonly use 600-1,800 mg/day in divided doses
Active Compound Cynarin (1,5-dicaffeoylquinic acid), chlorogenic acid, luteolin, sesquiterpene lactones

Benefits

Cholesterol Reduction

RCT showed artichoke leaf extract (1,280 mg/day) significantly reduced total cholesterol vs placebo over 12 weeks in adults with mild-moderate hypercholesterolemia. Multiple subsequent trials and meta-analyses confirm modest cholesterol-lowering effects — typically 5-15% reduction.

Supported by Trial 1

Functional Dyspepsia / Indigestion

Good evidence from one multicentre, placebo-controlled RCT (Holtmann 2003, 247 patients) in which artichoke leaf extract reduced dyspeptic complaints (bloating, fullness, nausea, abdominal pain) and improved quality of life over 6 weeks. Dyspepsia is an approved indication for artichoke in European herbal medicine (German Commission E).

Supported by Trial 2, Trial 1

IBS Symptom Relief

An uncontrolled, open-label study (Bundy 2004) identified 208 volunteers with IBS post hoc and reported a fall in IBS incidence and improved quality of life after two months. There was no placebo group, so the size of any true effect is uncertain. The reported change was a shift away from alternating constipation and diarrhea toward a normal bowel pattern.

Supported by Trial 2

Choleretic / Bile Flow Stimulation

Increases bile production and flow — foundational mechanism. Useful for fat digestion, gallbladder support (in absence of gallstones), and supporting fat-soluble nutrient absorption.

Hepatoprotection

Most liver-protection evidence is from animal models of drug-induced and alcohol-induced injury. Human data are limited: a few small trials report modest reductions in liver enzymes (ALT, AST), but this use is not well established in people. Proposed mechanisms include antioxidant activity and bile flow stimulation.

Supported by Trial 1

Mechanism of action

1

Cynarin Choleretic Activity

Cynarin (1,5-dicaffeoylquinic acid) is the primary active — stimulates bile production by hepatocytes and bile flow through bile ducts. Increased bile flow improves fat digestion and provides excretory route for cholesterol and toxins.

2

HMG-CoA Reductase Modulation

Artichoke compounds modestly inhibit HMG-CoA reductase (the same enzyme statins block) — basis for cholesterol-lowering effects. Effect substantially weaker than statins.

3

Antioxidant Activity (Polyphenols)

Chlorogenic acid, luteolin, and other polyphenols provide direct antioxidant activity plus support of endogenous antioxidant systems. Concentrated in leaves rather than the edible bud.

4

GI Motility / Carminative Effects

Bitter compounds stimulate digestive secretions; antispasmodic effects on smooth muscle reduce bloating and cramping. Traditional bitter herb mechanism.

Clinical trials

1
Artichoke for Cholesterol

Clinical trial of artichoke leaf extract (1,280 mg/day) vs placebo in 75 adults with mild-moderate hypercholesterolemia for 12 weeks.

75 adults with hypercholesterolemia.

Total cholesterol fell by about 4.2% versus a slight rise in placebo (statistically significant). LDL, HDL and triglycerides did not differ significantly between groups, so the effect was modest and mainly on total cholesterol.

2
Artichoke for IBS (open-label, uncontrolled)

Open-label observational trial of artichoke leaf extract in 208 IBS patients for 8 weeks.

208 IBS patients.

Reported a 26% fall in IBS incidence and improved Nepean Dyspepsia Index quality-of-life scores after two months. Because there was no placebo control, these before and after changes cannot be attributed to artichoke with confidence.

Side effects and drug interactions

Common Potential side effects

Generally well-tolerated.
Mild GI distress (gas, diarrhea, cramping).
Allergic reactions in those with Asteraceae family allergies (ragweed, daisies, marigolds, chrysanthemums).
Headache rare.
Increased bile flow may worsen symptoms in those with bile duct obstruction or gallstones.

Important Drug interactions

Bile duct obstruction / gallstones — increased bile flow may exacerbate; avoid without medical supervision.
Anticoagulants — theoretical bleeding risk at high doses; minor.
Cholesterol-lowering medications (statins) — additive effects; monitor.
Diabetes medications — modest hypoglycemic effects.
Iron supplementation — chlorogenic acid may modestly reduce iron absorption; separate by 2 hours.

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Frequently asked questions about Artichoke Leaf (Cynara scolymus / Cynara cardunculus)

What is artichoke extract used for?

Artichoke leaf extract is used for digestive comfort, liver support, and healthy cholesterol. It stimulates bile flow, which aids fat digestion, and its compound cynarin is studied for liver and lipid support.

Does artichoke help digestion and cholesterol?

Artichoke is studied for easing indigestion and bloating (by supporting bile flow) and for modestly supporting healthy cholesterol. It is a popular gentle digestive and liver-support herb.

How much artichoke extract should I take?

Studies commonly use about 300 to 640 mg of standardized artichoke leaf extract two to three times daily. Follow product labeling and give cholesterol goals several weeks.

Is artichoke safe?

It is generally well tolerated; mild gas or digestive changes can occur. Because it stimulates bile, people with bile-duct obstruction or gallstones should avoid it without medical advice. Those allergic to ragweed-family plants may react.

What is Artichoke Leaf?

Artichoke leaf extract is one of the most studied herbal hepatoprotective and choleretic (bile-stimulating) agents in European herbal medicine. Distinguished by cynarin and chlorogenic acid content. Approved by the European Scientific Cooperative on Phytotherapy (ESCOP) and German Commission E for dyspeptic complaints.

What is Artichoke Leaf used for?

Artichoke Leaf is researched primarily for Cardiovascular and Gut Health. RCT showed artichoke leaf extract (1,280 mg/day) significantly reduced total cholesterol vs placebo over 12 weeks in adults with mild-moderate hypercholesterolemia.

What is the recommended dosage of Artichoke Leaf?

The clinically studied dose is 320-1,920 mg/day standardized leaf extract; clinical trials commonly use 600-1,800 mg/day in divided doses Always follow the product label and check with a healthcare provider for personal advice.

Is Artichoke Leaf safe, and does it have side effects?

For most healthy adults, Artichoke Leaf is well tolerated at studied doses. Reported effects can include: Generally well-tolerated. Mild GI distress (gas, diarrhea, cramping). It may also interact with some medications. Artichoke Leaf is not right for everyone, so check with a healthcare provider first if you are pregnant or breastfeeding, have a medical condition, or take prescription medication.

Does Artichoke Leaf interact with any medications?

Possible interactions include: Bile duct obstruction / gallstones — increased bile flow may exacerbate; avoid without medical supervision. Anticoagulants — theoretical bleeding risk at high doses; minor. If you take prescription medication, check with a pharmacist or doctor before using it.

How strong is the scientific evidence for Artichoke Leaf?

NutraSmarts rates the evidence for Artichoke Leaf as Moderate (3 out of 5). It is backed by 2 clinical trials and 5 cited references summarized on this page. A higher rating reflects more, larger, and better-designed human studies.

References(5 citations)

Evidence ratings on NutraSmarts are based on the totality of human clinical research, with emphasis on randomized controlled trials, meta-analyses, and systematic reviews. The references below directly support claims made throughout this page.

  1. Bundy R, Walker AF, Middleton RW, Wallis C, Simpson HCR. Artichoke leaf extract (Cynara scolymus) reduces plasma cholesterol in otherwise healthy hypercholesterolemic adults: a randomized, double blind placebo controlled trial. Phytomedicine. 2008;15(9):668-75. doi: 10.1016/j.phymed.2008.03.001.PubMedUsed to support: Backs the cholesterol-lowering claim. In 75 adults with mild hypercholesterolemia, 1,280 mg/day artichoke leaf extract for 12 weeks lowered total cholesterol by about 4.2% versus a rise in placebo (significant). Honest caveat: the change in LDL specifically was not statistically significant, so the effect was modest and mainly on total cholesterol.
  2. Sahebkar A, Pirro M, Banach M, Mikhailidis DP, Atkin SL, Cicero AFG. Lipid-lowering activity of artichoke extracts: A systematic review and meta-analysis. Crit Rev Food Sci Nutr. 2018;58(15):2549-2556. doi: 10.1080/10408398.2017.1332572.PubMedUsed to support: Pooled evidence for the LDL/cholesterol claim. Meta-analysis of 9 RCTs (702 subjects) found artichoke extract significantly reduced total cholesterol, LDL cholesterol, and triglycerides versus control, supporting a genuine but modest lipid-lowering effect.
  3. Shahinfar H, Bazshahi E, Amini MR, Payandeh N, Pourreza S, Noruzi Z, Shab-Bidar S. Effects of artichoke leaf extract supplementation or artichoke juice consumption on lipid profile: A systematic review and dose-response meta-analysis of randomized controlled trials. Phytother Res. 2021;35(12):6607-6623. doi: 10.1002/ptr.7247.PubMedUsed to support: Second independent meta-analysis reinforcing the cholesterol/LDL claim. Dose-response synthesis of RCTs found artichoke significantly reduced triglycerides, total cholesterol, and LDL cholesterol, strengthening confidence that the lipid effect is reproducible across trials.
  4. Holtmann G, Adam B, Haag S, Collet W, Grunewald E, Windeck T. Efficacy of artichoke leaf extract in the treatment of patients with functional dyspepsia: a six-week placebo-controlled, double-blind, multicentre trial. Aliment Pharmacol Ther. 2003;18(11-12):1099-105. doi: 10.1046/j.1365-2036.2003.01767.x.PubMedUsed to support: Backs the functional dyspepsia / digestive claim. In 247 patients, artichoke leaf extract significantly reduced dyspeptic symptoms and improved quality of life (Nepean Dyspepsia Index) versus placebo over 6 weeks.
  5. Bundy R, Walker AF, Middleton RW, Marakis G, Booth JC. Artichoke leaf extract reduces symptoms of irritable bowel syndrome and improves quality of life in otherwise healthy volunteers suffering from concomitant dyspepsia: a subset analysis. J Altern Complement Med. 2004;10(4):667-9. doi: 10.1089/acm.2004.10.667.PubMedUsed to support: Underpins the IBS benefit, and shows how weak that base is. This is a post-hoc subset of an open, postal, dose-ranging study: 208 adults were identified after the fact as having IBS, and after two months IBS incidence fell by 26.4% and Nepean Dyspepsia Index symptom and quality-of-life scores improved. There was no placebo control and no randomization, so the before-and-after changes cannot be attributed to artichoke with confidence.