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📰Read the full Krill Oil evidence review on GMJ News →Complete clinical article, references and updates on news.gmj.ge. This page is the structured safety summary.⚠ Shellfish-allergic patient — krill are crustaceans [1]
⚠ No cardiovascular outcome trials (unlike fish oil/REDUCE-IT) [2]
⚠ Phospholipid form may be better absorbed per mg than fish oil TG/EE [2]
ℹ️ Not obtained from food. A concentrated omega-3 source; intake is guided by EPA/DHA rather than a krill-oil dietary target.
🔬 Lab interpreter
Recommended test
Omega-3 index
Omega-3 index
Reference range / target
>8%
>8%
Compare to fish oil baseline [2].
Full lab monitoring ↓⚕ For professionals — confirm ranges against your local laboratory.
Clinical verdict
Krill oil provides omega-3s in phospholipid form (possibly better absorbed per mg) with built-in astaxanthin antioxidant. Less burping than fish oil. BUT: far less clinical trial data than fish oil — no equivalent to REDUCE-IT. Shellfish allergy concern (krill = crustacean). Fish oil remains the evidence-based first choice for therapeutic omega-3 [1] [2].
1 How much do I need?
👤 Adults: Specific dosage data under clinical review
👴 Elderly: Specific dosage data under clinical review
🤰 Pregnancy: See guidance
Limited pregnancy-specific data. Fish oil has more extensive pregnancy safety data [1].
👦 Pediatric: See guidance
No specific data [1].
🏃 Athletes: Standard dose
⚖️ Obesity: Standard dose
Fat-soluble compounds may require dose adjustment in obesity.
🩺 Renal: Consult specialist
Dose adjustment may be needed in renal impairment.
🌱 Vegan: Standard dose
How to take
🍽 Timing: With meals [1].
💊 With food: With food [1].
2 Which form?
| Form | Bioavailability | Vegan | Cost |
|---|---|---|---|
| ['Krill oil soft gels', 'common', 'Standard. 500–1,000 mg per capsule. Lower EPA+DHA per capsule than fish oil (but better absorbed per mg) [2].'] | Standard | Check label |
3 Common questions
Is krill oil better than fish oil? ▼
Possibly better absorbed per mg of EPA+DHA due to phospholipid delivery, and it contains astaxanthin. However, krill oil has MUCH less clinical trial data than fish oil, especially for cardiovascular outcomes. Fish oil (particularly Vascepa) has the REDUCE-IT trial. Krill oil does not [2].
Shellfish allergy concern? ▼
Krill are crustaceans. Patients with shellfish allergy should exercise caution, though the allergenic proteins may differ from shrimp/crab [1]. Consult allergist.
Why less burping? ▼
Phospholipid-bound omega-3s may be absorbed higher in the GI tract, reducing the fishy reflux common with fish oil. Astaxanthin also prevents oxidation (rancidity) [1].
4 Clinical evidence
Strong
EPA+DHA in phospholipid form: confirmed by chemical analysis. Phospholipid omega-3s may integrate into cell membranes more efficiently than triglyceride forms (PK studies) [2]. HIGH
Moderate
Omega-3 index: some trials show krill oil raises the omega-3 index comparably to fish oil at lower EPA+DHA doses [2]. Lipids: modest TG and LDL reduction [2]. Joint pain: some OA trials positive [2]. PMS: one trial showed reduced emotional and physical PMS symptoms [2]. MODERATE
Insufficient
5 Safety, toxicity & adverse events
Absolute contraindications
✕ Shellfish allergy — krill is a crustacean
Relative
⚠ Concurrent anticoagulants — omega-3 antiplatelet effect
⚠ Surgery — discontinue 7 days before
🚩 Red flags
● Shellfish allergy [1]
● No outcome trial data — not a substitute for Vascepa when REDUCE-IT criteria met [2]
6 Interactions
Drug interactions
Anticoagulants Moderate
Mechanism: Same EPA+DHA antiplatelet effects as fish oil. [1]
Effect: Additive bleeding risk at high doses. [1]
Action: Same precautions as fish oil [1].
Supplement synergies
Vitamin D · 600–2,000 IU
Both commonly deficient. Krill oil's fat content enhances vitamin D absorption [1].
Both commonly deficient. Krill oil's fat content enhances vitamin D absorption [1].
7 Regulatory
United States (FDA): GRAS. Dietary supplement [1].
MSC: Antarctic krill fishery is MSC-certified sustainable [1].
South Korea: Dietary supplement.
8 US supplement products
90
on-market products containing Krill Oil (NIH DSLD)
Brands carrying Krill Oil (57)
Click a brand to see its Krill Oil products.
9 Frequently paired with
10 Cite this page
Vancouver: Pkhakadze G. Krill Oil — safety profile [Internet]. Tbilisi: PHIG; 2026 [cited 2026 Aug 15]. Available from: https://supplement.ge/ingredients/krill-oil/
APA 7th: Pkhakadze, G. (2026). Krill Oil — Safety profile. Public Health Institute of Georgia. https://supplement.ge/ingredients/krill-oil/
📋 Editorial information
Author: Prof. G. Pkhakadze, MD, MPH, PhD
Institution: Public Health Institute of Georgia (PHIG)
Affiliation: David Tvildiani Medical University (DTMU)
First published: January 2026
Last reviewed: 2026-05-29
Next review: February 2027
References: 2 cited sources
COI: SupplementIndex receives no funding from supplement manufacturers. All content independently authored by PHIG.
Process: Systematic literature review
📄 License & reuse
Published under Creative Commons Attribution 4.0 International (CC BY 4.0). You may share and adapt for any purpose with attribution.
Pkhakadze G. "Krill Oil — Safety Profile." SupplementIndex, PHIG, 2026. https://supplement.ge/ingredients/krill-oil/ CC BY 4.0.
GP
Prof. G. Pkhakadze, MD, MPH, PhD
Professor of Public Health · Head of Department, DTMU
Editor-in-Chief, Georgian Medical Journal (ISSN 3088-4322)
Chair, Public Health Institute of Georgia · UEMS Public Health Section
Educational and public health purposes. CC BY 4.0. Consult your healthcare provider before starting any supplement. Corrections: info@accreditation.ge. Publisher: PHIG