Strong consensus on omega-3 benefits for mood, heart, and cognition, tempered by serious contamination and certification concerns.
Guaranteed Analysis per 1 mL (approximately 920 mg fish oil): crude fat (minimum) 98.5%; moisture (maximum) 0.2%; EPA (minimum) 15%; DHA (minimum) 10%; total omega-3 fatty acids (minimum) 32%. Includes 142 mg EPA, 92 mg DHA and 294 mg total omega-3s in triglyceride form. Calculated calorie content: ME 8,466 kcal/kg, 8 kcal/mL. Ingredients: fish oil (from anchovies, sardines, mackerel and herring), d-alpha tocopherol (a preservative). EPA, DHA and total omega-3 fatty acids are not recognized as essential nutrients by the AAFCO Dog or Cat Food Nutrient Profiles.
Using the provided dropper, add to your pet’s food or serve by itself once daily. Dogs: 2–4 lbs, 0.5 mL; 5–9 lbs, 1.0 mL; 10–19 lbs, 2.0 mL. Cats: 2–4 lbs, 0.25 mL; 5–9 lbs, 0.5 mL; 10–14 lbs, 0.75 mL; 15–19 lbs, 1.0 mL; 20–25 lbs, 1.25 mL. Clean dropper thoroughly after each use. Store bottle with original cap in refrigerator. Do not exceed the suggested daily use without consulting your veterinarian.
For intermittent or supplemental feeding only. Keep out of reach of children and pets. Store in a cool, dry place away from sunlight. Do not use if tamper-evident seal is broken or missing. Refrigerate after opening; best if used within 3 months after opening. Consult your veterinarian before using this supplement if your dog has a known medical condition or is taking medications. In case of overconsumption, immediately consult your veterinarian. Do not use the dropper to deliver oil directly into the mouth. To preserve freshness, do not depress the bulb with the pipette in oil.
Source: Original manufacturer package label in Fullscript supplier catalog · September 06, 2026. Formulas and labels can change. Check the packaging you receive.
Nordic Naturals Omega-3 Pet delivers EPA and DHA from purified fish oil in a liquid form sized for cats and small dogs. These omega-3 fatty acids support healthy skin and coat, joint flexibility, and normal cognitive function in companion animals. Formulated specifically for smaller pets who may not tolerate large capsules or doses.
Why It's Worth Considering: Nordic Naturals uses triglyceride-form fish oil, which research suggests is more readily absorbed than the ethyl ester form common in lower-cost alternatives, and the product is third-party tested for purity and oxidation levels.
Using the provided dropper, add to your pet’s food or serve by itself once daily. Dogs: 2–4 lbs, 0.5 mL; 5–9 lbs, 1.0 mL; 10–19 lbs, 2.0 mL. Cats: 2–4 lbs, 0.25 mL; 5–9 lbs, 0.5 mL; 10–14 lbs, 0.75 mL; 15–19 lbs, 1.0 mL; 20–25 lbs, 1.25 mL. Clean dropper thoroughly after each use. Store bottle with original cap in refrigerator. Do not exceed the suggested daily use without consulting your veterinarian.
| Feature | Fish Oil (this) | Krill Oil | Algal Oil | Cod Liver Oil |
|---|---|---|---|---|
| EPA+DHA Content | High (concentrated) | Moderate | Moderate-High | Moderate + Vit A/D |
| Absorption | Good (triglyceride form) | Excellent (phospholipid) | Good | Good + fat-soluble vitamins |
| Best For | Therapeutic dose, heart/brain | General wellness | Vegan option | Vitamin A+D + omega-3 |
| Sustainability | Varies by brand | Sustainable harvest | Most sustainable | Traditional, sustainable |
| Burp Factor | Low (if enteric coated) | Very low | None | Moderate |
For general health, 1-2g of combined EPA+DHA daily. For therapeutic use (triglycerides, inflammation, mood), 2-4g combined EPA+DHA. Check the label for EPA+DHA content per serving, many fish oils have only 300mg per 1000mg capsule, requiring 6-8 capsules for a therapeutic dose. Concentrated formulas provide 600-900mg per capsule.
EPA (eicosapentaenoic acid) is primarily anti-inflammatory, best for joint pain, cardiovascular health, and mood disorders. DHA (docosahexaenoic acid) is structural, it comprises 40% of brain polyunsaturated fats and is critical for cognitive function, eye health, and fetal development. Most people benefit from both; higher EPA for inflammation, higher DHA for brain health.
Low-quality fish oil can cause fishy aftertaste and burping. Solutions: take with food, choose enteric-coated capsules, refrigerate the bottle (slows breakdown), or use a concentrated triglyceride-form fish oil (higher quality = less burping). If you still experience burps, the oil may be oxidized, check the expiration date and smell the capsule.
Krill oil has better absorption per gram (phospholipid form) and contains astaxanthin (antioxidant), but it's significantly more expensive per mg of EPA+DHA. For therapeutic doses (2-4g EPA+DHA), fish oil is more practical and cost-effective. Krill oil is a good choice for general wellness at maintenance doses.
Fish oil has mild blood-thinning properties. If you're taking warfarin, aspirin, or other anticoagulants, consult your physician before starting high-dose omega-3. At standard doses (1-2g), the risk is low, but your INR may need monitoring. Stop fish oil 1-2 weeks before scheduled surgery.
Look for: third-party tested for heavy metals and oxidation (IFOS 5-star rated), triglyceride form (not ethyl ester), high EPA+DHA per capsule (600mg+ combined), and molecular distillation for purity. The Gabriel Score evaluates all of these quality signals automatically.
No significant interactions identified. Always consult your healthcare provider.
† 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.
