Celery Seed

Apium graveolens

ApiaceaeMediterranean region and Middle East; wild celery found in marshes and wet areas from Sweden to Egypt; cultivated globally

Description

overall appearance

A biennial herb (or annual in cultivation) reaching 30–100 cm in vegetative form, up to 1.5 m when flowering. The cultivated celery is familiar as a vegetable; the medicinal plant is grown specifically for seed. Wild celery is smaller and less succulent than cultivated forms.

roots

Fibrous root system with a thickened taproot; cultivated celeriac (var. rapaceum) develops a large edible root; seed-type plants have less prominent roots

stem

Erect, hollow, prominently ribbed and furrowed; smooth, bright green; strongly aromatic when bruised; branching in upper plant; petioles of leaves form familiar crisp stalks

leaves

Pinnate to bipinnate; leaflets ovate, 1–5 cm, with broad, sheathing bases; deeply lobed with toothed margins; bright green and glossy; strongly aromatic

flowers

Tiny, white to greenish-white, 1.5–2 mm; in compound umbels 3–8 cm wide with 7–16 rays; blooms July–August in second year

fruits/seeds

Tiny schizocarp 1.5–2 mm long; splitting into 2 mericarps; gray-brown; 5 fine ribs per mericarp; intensely aromatic; the primary medicinal part

Active Compounds

Phthalides (3-n-butylphthalide, sedanolide, senkyunolide — 50–75% of essential oil)Limonene (10–20%)Selinene (beta-selinene, 10–25%)Flavonoids (apigenin, luteolin, quercetin)Furanocoumarins (bergapten, psoralen, xanthotoxin)Fatty acids: petroselinic acid (60–70% of fixed oil)Sedanolide and sedanenolide (phthalide lactones)Phenolic acids (caffeic acid, chlorogenic acid)

Traditional Uses

Ancient Indian Ayurvedic medicine uses ajmod (celery seed) for gout, arthritis, rheumatism, kidney disease, and urinary disorders
Ancient Egyptian and Greco-Roman use: Dioscorides recommended celery seed as a diuretic, for urinary stones, and to regulate menstruation
Traditional use throughout South Asia for hypertension, high uric acid, and as an anti-inflammatory
British herbal tradition used celery seed for gout, rheumatic arthritis, and nervous exhaustion
Traditional Chinese medicine uses celery (Shen Cai) for lowering blood pressure and as a diuretic
Middle Eastern folk medicine uses celery seed for flatulence, digestive spasms, and liver tonic
Traditional Unani medicine (tibb) uses ajmud for promoting digestion, treating spasms, and as a carminative
Folk use in Europe for menstrual irregularities and as a uterine stimulant

Modern Applications

Antihypertensive: phthalides (especially 3-n-butylphthalide) relax smooth muscle in arterial walls; Chinese clinical trial showed celery seed extract reduced BP significantly over 4 weeks
Uric acid reduction: phthalides inhibit xanthine oxidase, reducing uric acid production; evidence from animal and preliminary human studies for gout prevention
Diuretic: increases urine production and sodium excretion; reduces fluid retention
Anti-inflammatory: apigenin and luteolin inhibit COX-2 and NF-κB; relevant for arthritis and inflammatory conditions
Anxiolytic and sedative: phthalides modulate GABA-A receptor in animal studies; sedanenolide shows tranquilizing effects
Antimicrobial: essential oil effective against Staphylococcus, E. coli, and Candida in vitro
Hepatoprotective: phthalides reduce liver enzyme elevation in acetaminophen-induced hepatotoxicity in animals
Antifungal: furanocoumarins and phthalides show activity against dermatophyte fungi

⚠️ Safety Information

Contraindications

Pregnancy: uterotonic and emmenagogue effects of phthalides and essential oil; therapeutic doses contraindicated
Kidney inflammation and nephritis: diuretic and oxalate content may worsen active renal inflammation
Allergy to Apiaceae family: risk of severe cross-reactive anaphylaxis; one of the most common food allergens in Europe
Pre-surgical use: discontinue 2 weeks prior; antiplatelet phthalide effects
Photosensitizing furanocoumarins: psoralen and bergapten can cause severe phototoxic reactions

Side Effects

Photosensitivity: significant phototoxic skin reactions from furanocoumarin content, particularly with handling fresh plant or seed
Allergic reactions: celery allergy is a major food allergy in Europe; can cause anaphylaxis in sensitized individuals
Excessive urination and potential electrolyte imbalance
Gastrointestinal irritation at high doses
Thyroid interference: goitrogenic compounds present at high intake may affect thyroid function

Drug Interactions

Antihypertensive medications: additive BP lowering; significant risk of hypotension
Anticoagulants (warfarin): furanocoumarin and flavonoid effects may alter bleeding parameters; monitor INR
Diuretics (furosemide, thiazides): additive diuresis and electrolyte loss
Lithium: diuretic-induced sodium loss reduces lithium excretion; may cause toxicity
Thyroid medications: potential interference with thyroid hormone at high doses