Leaf
The first-year rosette leaves, listed in the French Pharmacopoeia (list A).
Leaf
Cynara scolymus L. (Asteraceae) — the improved cardoon, unknown in the wild, whose first-year rosette leaves are a classic choleretic. Its cynarin and luteolin glycosides are studied for bile flow, liver protection and cholesterol, with trials in dyspepsia and fatty liver disease.
Artichoke is a large perennial herb with a rosette of strongly veined, pinnately divided leaves that are not spiny, which distinguishes it from the cardoon. Sturdy, branched stems carry flower heads 10 to 15 cm across. The edible parts are the fleshy receptacle and the bracts around it.
The artichoke is an improved cardoon and is unknown in the wild. The wild species, Cynara cardunculus, comes from East Africa (Ethiopia), and was introduced to the Mediterranean basin and selected for cultivation.
The leaves, rather than the edible head, are the medicinal part, prepared as a tisane, a fresh-leaf extract or a dry extract.
Modern research has centered on cynarin and luteolin glycosides, on a Cochrane review of the leaf extract for hypercholesterolemia, and on trials in dyspepsia and fatty liver disease. 152426
⚠ Bitter Taste
The bitterness of the leaf limits its use as an infusion, which is why standardized extracts are common.
The caffeoylquinic acids, sesquiterpene lactones and flavonoids behind artichoke's activity.
The bitter sesquiterpene lactones of the leaf, responsible in part for its taste.
Luteoloside, scolymoside, cynaroside and luteolin-7-gentiobioside are the main flavonoids. 4
Malic acid (0.8%) with succinic, lactic, fumaric and citric acids, acting synergistically with the phenolic acids on diuretic and hepatic effects. 3
The leaf of the first-year rosette is used, in a wide range of preparations.
The first-year rosette leaves, listed in the French Pharmacopoeia (list A).
Leaf
Infusion of the dried leaf; the bitterness limits its use.
Infusion
Teinture-mère of the leaf.
Liquid Extract
Extrait fluide and officinal tincture of the leaf.
Liquid Extract
Dry extracts, including those of fresh leaves.
Dry Extract
Standardized fresh-plant extracts (EPS and SIPF).
Standardized Extract
Artichoke leaf is taken as a tea, a powder or a concentrated extract, and the amount depends on the preparation.
Phenolic acids, sesquiterpene lactones and flavonoid glycosides make up the active profile of the leaf.
Increases bile secretion and bile flow, and is amphocholeretic, helping to regulate bile output. 6
Protected the liver against carbon tetrachloride and paracetamol, and favors liver regeneration; cynarin increases biliary flow. 789
Strongly antioxidant; inhibits malondialdehyde formation induced by tert-butyl hydroperoxide in hepatocytes. 10
Synergy with milk thistle and borututu syrups was studied, and polyphenol extracts promoted apoptosis in liver cancer cells. 1112
Cynarin, luteolin and cynaroside lower cholesterol; reviewed in a Cochrane review. 13141516
Prevents lipid peroxidation and lipoprotein dyshomeostasis in rats fed a high-cholesterol diet. 17
Lowered postprandial hyperglycemia and food intake in rats. 1819
Part of its effects may depend on action on the mitochondrial respiratory chain of liver cells. 20
Inhibits xanthine oxidase, with a potential in hyperuricemia and gout. 21
Reduced reactive oxygen species in human endothelial cells and protected against oxidative stress from inflammatory mediators and oxidized LDL. 2223
Active against Staphylococcus aureus and Escherichia coli. 1
Promotes urine output and lowers circulating triglycerides.
Artichoke is used mainly for digestive, hepatic and lipid-related conditions, with trials in dyspepsia and fatty liver.
Artichoke's effects come from caffeic acid esters and flavonoids acting on bile flow, hepatocyte metabolism and oxidative stress.
Artichoke leaf is generally well tolerated; the key contraindication is bile duct obstruction.