🐟 Cod Liver Oil
What it is:
Cod liver oil is extracted specifically from the liver of codfish.
Nutrient Highlights:
High in Vitamin A (retinol form)
High in Vitamin D (D3)
Moderate Omega-3s: EPA + DHA
Benefits:
Supports immune health and vision (Vitamin A)
Helps regulate calcium metabolism and bone health (Vitamin D)
Offers anti-inflammatory benefits from EPA/DHA
Useful for dogs needing fat-soluble vitamins (like seniors or those with poor nutrient absorption)
Cautions:
Can be too high in Vitamin A or D if overdosed—especially for dogs already on a multivitamin or eating organ meats regularly.
Not ideal as the sole omega-3 source in high doses due to the vitamin levels
🐠 Omega-3 Oil Blends (Anchovy, Krill, Salmon, etc.)
What it is:
These blends are made from the body oil of small cold-water fish or krill.
Nutrient Highlights:
Rich in Omega-3s (EPA & DHA)
Low in Vitamin A/D unless added
May contain astaxanthin (antioxidant) in krill or salmon
Benefits:
Strong anti-inflammatory properties for joints, skin, brain, heart
Helps reduce itching, allergies, cognitive decline, and arthritis pain
Can be dosed higher than cod liver oil to reach therapeutic omega levels
Safer for dogs needing high omega-3 without excess fat-soluble vitamins
Cautions:
Choose high-quality, purified oil to avoid heavy metal contamination
Can oxidize—choose packaged in dark bottles and store cold
🧠 Summary:
Cod Liver Oil is more of a nutrient-dense supplement—think of it like a whole-food multi with omegas.
Omega-3 blends are better for high-dose anti-inflammatory support.
Many of my clients rotate cod liver oil a few times per week while using a purified fish or krill oil as the main omega-3 source.
| Use Case | Cod Liver Oil | Omega-3 Blend |
|---|---|---|
| Need for Vitamin A or D | ✅ Best choice | ❌ Not a source |
| Skin/Joint/Brain/Heart support | ✅ Good | ✅✅ Best |
| Therapeutic EPA/DHA levels | ❌ Risk of vitamin overdose | ✅ Safer to increase dose |
| Rotation in supplement plan | ✅ Fair as a rotating source | ✅ Great for consistent support |
