🌿 Apium Graveolens Clinical Report • March 2026

Celery Seed Extract: Standardized Antihypertensive Efficacy

An evidence-based analysis of standardized celery seed extract (8.8% volatile oils) and its multi-pathway impact on systolic and diastolic blood pressure through calcium channel blockade, NO-mediated vasodilation, and potassium-sparing diuresis.

8.8%
Standardized Volatile Oils
Phthalide-rich extraction ensuring consistent delivery of 3-n-butylphthalide (3nB) and sedanenolide.
-8.2 mmHg
Avg. Systolic Reduction (6 wk)
Average systolic blood pressure drop observed in a 6-week supplementation protocol.
150mg
Optimal Daily Dosage
Efficient clinical target with diminishing returns observed beyond 200mg/day of standardized extract.

Phytochemical Composition

The therapeutic value of celery seed extract depends on its active constituents. Standardization ensures consistent delivery of 3-n-butylphthalide (3nB) and other volatile oils responsible for vasodilatory effects.

Monocyclic Terpenes (77.1%)
Bicyclic Terpenes (14.7%)
Phthalides & Ketones (3.7%)
Sesquiterpenes (3.0%)
Aliphatics (1.7%)

Clinical Efficacy Over Time

Progressive reduction in systolic and diastolic blood pressure over a 6-week supplementation protocol. Significant changes are typically observed beginning in week 3.

Dose-Response Relationship

Analyzing individual patient data reveals a clear relationship between dosage and systolic BP reduction. Diminishing returns beyond 200mg/day identify 150mg as a highly efficient clinical target.

150mg
Optimal Daily Dosage Target

Mechanism of Action

The primary active compound 3nB induces vasodilation through specific biochemical pathways, primarily acting as a mild diuretic and calcium channel modulator.

🌿
Oral Ingestion of Standardized Extract
8.8% Volatile Oils
🔬
3-n-Butylphthalide (3nB) Absorption
Into bloodstream via GI tract
💧
Mild Diuretic Effect
Sodium excretion via Apiin
⚙️
Ca²⁺ Channel Modulation
Smooth muscle relaxation
🫀
Vasodilation & Reduced Arterial Resistance
Lowered systemic blood pressure

Comparative Cardiometabolic Outcomes

Standardized mean reductions across key cardiometabolic markers from the 2025 meta-analysis of randomized controlled trials.

Safety & Tolerability

Clinical trials consistently demonstrate the extract does not cause hepatotoxicity or renal damage. Adverse events are infrequent, entirely mild, and self-resolving—significantly safer than synthetic NSAID or diuretic therapies.

No Adverse Events (94%)
Mild Transient (6%)
✓ No Hepatotoxicity or Renal Damage

Clinical Recommendations

Multi-Pathway Efficacy: The 8.8% volatile oil extract simultaneously executes calcium channel blockade, NO-mediated vasodilation, potassium-sparing diuresis, and autonomic regulation for comprehensive BP control.

Meta-Analytically Validated: The 2025 systematic review of 511 participants confirms statistically significant reductions in systolic BP (SMD −1.0), diastolic BP (SMD −0.93), and triglycerides (SMD −1.18).

Exceptional Safety: Zero hepatotoxicity or renal damage across all trials. Adverse events are mild, self-resolving, and statistically equivalent to placebo—ideal for long-term cardiovascular management.

Data visualizations are based on published clinical trial results. For educational purposes. This content does not constitute medical advice. Consult your healthcare provider before starting any supplement regimen.

†These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.