Castor Oil with Fennel Oil — Natural Digestive Support & Gentle Cleansing*
Our Castor Oil with Fennel Oil combines cold-pressed, hexane-free Ricinus communis seed oil and Foeniculum vulgare fruit oil in taste-free softgels to support natural occasional elimination, promote digestive comfort, help maintain intestinal motility, support gentle cleansing routines, promote relief from occasional bloating or gas, provide convenient mess-free digestive support, support occasional bowel regularity, promote GI comfort with carminative properties, support short-term wellness applications, and promote overall digestive wellness* — while respecting traditional herbal use. Produced in FDA-registered, GMP-certified facilities and 3rd-party lab tested for purity and potency by LifeSource Vitamins.
Research-Driven & Verified Product.
Explore the clinical research, ingredient science, and global evidence supporting this product below.
Research Promise: At LifeSource Vitamins, our commitment is rooted in research and results. Every benefit below is supported by human clinical studies indexed in the National Institutes of Health (NIH) via PubMed, with full texts available in the National Library of Medicine (NLM) PubMed Central (PMC) when available. We also reference reviews from 39 leading health organizations and insights from 20 top global universities to keep our guidance aligned with credible, evidence-based science.* Every claim is supported by peer-reviewed human RCTs or meta-analyses whenever available.
Clinically Studied Benefits
✓ Recognized as stimulant laxative for occasional constipation relief* — Castor oil promotes intestinal motility and fluid secretion via ricinoleic acid activation of prostaglandin EP3 receptors in human and mechanistic studies.*
NIH/PMC — Tunaru et al., 2012
✓ Supports occasional bowel movements and elimination* — Ricinoleic acid from castor oil increases peristalsis and secretion in the small intestine, supporting short-term laxative effects in reviews and clinical contexts.*
NIH/StatPearls — Alookaran et al., 2024
✓ Promotes digestive comfort and relief from bloating/gas* — Fennel oil demonstrates carminative and antispasmodic effects, improving IBS symptoms including bloating and abdominal discomfort in randomized trials.*
NIH/PubMed — Portincasa et al., 2016
✓ Supports GI motility and regularity in occasional use* — Castor oil's mechanism via ricinoleic acid enhances propulsion in the intestine for short-term support.*
NIH/PMC — Tunaru et al., 2012
✓ Helps maintain comfort in functional digestive issues* — Combination approaches with fennel oil improve quality of life and symptoms like gas/bloating in real-life studies.*
NIH/PMC — Di Ciaula et al., 2018
✓ Promotes gentle cleansing and occasional elimination support* — Stimulant laxatives like castor oil provide effective short-term relief in clinical evaluations.*
NIH/StatPearls — Alookaran et al., 2024
✓ Supports reduction in flatulence and abdominal discomfort* — Fennel capsules reduce post-procedure gas and bloating in randomized controlled trials.*
NIH/PMC — Jourshari et al., 2024
✓ Provides mechanism-based digestive support* — Ricinoleic acid hydrolysis leads to increased motility and secretion for laxative action.*
NIH/StatPearls — Alookaran et al., 2024
Additional / Promising Evidence
✓ Supports short-term occasional wellness routines* — Castor oil used briefly for laxative effects; consult if symptoms persist.*
NIH/StatPearls — Alookaran et al., 2024
✓ Promotes compliance with softgel delivery* — Encapsulation offers advantages over liquid forms for oil-based supplements.*
NIH/PMC — Related encapsulation review
✓ May ease bloating and gas in digestive contexts* — Fennel oil shows carminative benefits in IBS and related studies.*
NIH/PubMed — Portincasa et al., 2016
✓ Supports antispasmodic effects on GI tract* — Fennel demonstrates relaxant properties in mechanistic and clinical evidence.*
NIH/PMC — Rauf et al., 2021
✓ Promotes quality of life in functional bowel issues* — Turmeric-fennel combinations improve symptoms over time in pilot studies.*
NIH/PMC — Di Ciaula et al., 2018
✓ Contributes to occasional GI comfort support* — Fennel tea shows region-specific motility effects in stomach.*
NIH/PMC — Annahazi et al., 2025
University-Led & Academic Studies
✓ Supports mechanism of ricinoleic acid in motility* — Academic models confirm EP3 receptor activation for laxative effects.*
NIH/PMC — Tunaru et al., 2012
✓ Promotes fennel effects on intestinal barrier and signaling* — University-linked research explores fennel seed extract benefits.*
NIH/PMC — Das et al., 2022
Global Evidence & Reviews
✓ Confirms castor oil as stimulant laxative with safety context* — Authoritative reviews outline mechanism, use, and prudent application.*
NIH/StatPearls — Alookaran et al., 2024
✓ Supports carminative and digestive evidence for fennel* — Systematic reviews highlight benefits in GI comfort and spasms.*
NIH/PMC — Rauf et al., 2021
✓ Aligns with NIH overviews on laxative mechanisms* — Castor oil recognized for occasional use in evidence-based summaries.*
NIH/PMC — Portalatin & Winstead, 2012
We monitor research from leading institutions —
Harvard, Johns Hopkins, Mayo Clinic, Cleveland Clinic, Cambridge, Oxford, Stanford, Yale, Tufts, University of Florida, Oregon State University – Linus Pauling Institute, Columbia, Cornell, Ohio State — to align with credible science.*
Key Ingredients
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Cold-Pressed Hexane-Free Castor Oil (Ricinus communis seed)* — Provides ricinoleic acid for motility support in occasional digestive routines.*
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Fennel Oil (Foeniculum vulgare fruit)* — Offers carminative properties to promote comfort and reduce occasional bloating/gas.*
Brief Benefit Bullets
- Supports natural, occasional elimination*
- Ricinoleic-acid mechanism for digestive support*
- Fennel oil for comfort and bloating support*
- Convenient, taste-free softgel delivery*
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3rd-party tested for purity & potency
Suggested Use
Adults: take 1 softgel with a full glass of water, preferably in the evening, or as directed by your healthcare professional. For occasional use only; do not exceed the recommended dose. If no bowel movement occurs within 6–12 hours, discontinue use and consult your clinician.*
Product Specifications
Serving Size — 1 Softgel
Servings Per Container — 120
Amount Per Serving — Castor Oil (seed; cold-pressed, hexane-free) 650 mg; Fennel Oil (fruit) 10 mg
Other Ingredients — Softgel capsule (bovine gelatin, glycerin, water)
Free From — Not manufactured with yeast, wheat, gluten, soy, corn, milk, egg, fish, or shellfish ingredients*
Quality — GMP produced; Third-party tested
Storage — Store in a cool, dry place after opening
LifeSource Vitamins — Proudly American — Since 1992
*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.
Castor Oil + Fennel softgels — taste-free support for occasional elimination & digestive comfort; cold-pressed, hexane-free; GMP & 3rd-party tested. Clinically Studied Ingredients — NIH/PubMed!*
