Salmon oil is an omega-3 (EPA/DHA) supplement that can support dog nail health. Many commercial diets are low in long-chain omega-3s, so adding salmon oil may help strengthen dog nails while also benefiting skin, coat, joints, heart, and immune function.
Why it helps
- Dog nails: Regular omega-3s can support nail moisture and keratin quality, making dog nails less likely to crack or split during trims and everyday wear.
- Skin & coat: Owners often notice a shinier coat within a few weeks; itchy or irritated skin may improve.
- Joints & seniors: Supplemental omega-3s can support mobility and comfort in older dogs.
- General support: May aid cardiovascular, cognitive, and immune health.
How much to give
As a general guide for skin/coat/nails, give about 1 gram of salmon oil per 20 lb (≈9 kg) body weight per day (roughly 50–60 mg/kg combined EPA+DHA).
Start low for a few days, then increase to the target. Always follow your product’s label and ask your vet if your dog has medical issues or takes medication.
How to give it
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- Salmon Oil in Pump bottles make dosing easy—squirt directly onto food.
- If fishy breath bothers you, try capsules (you can hide them in a treat).
- Storage matters: keep oil refrigerated, capped, and away from light; discard if it smells rancid.
Safety notes (read this)
- Check with your vet before starting if your dog has a history of pancreatitis, bleeding disorders, clotting/anticoagulant meds, diabetes, or fish allergies.
- Long-term fish oil use can increase vitamin E needs—some vets recommend a small vitamin E supplement; ask your vet what’s right for your dog.
- Avoid cod liver oil as a substitute (excess vitamins A/D).
- If soft stools occur, reduce the dose and increase gradually.
Not medical advice: This page is general information. Your veterinarian can provide individualized dosing and compatibility with your dog’s diet/medications.
Related: See Dry & Brittle Dog Nails for more ways to protect fragile nails.