How many mg of Omega 3 Should I give my dog?

Omega-3 fatty acids are essential nutrients that provide many health benefits for dogs. They help support skin and coat health, joint health, heart health, brain development, and more. Determining the right omega-3 dosage for your dog depends on their age, size, health conditions, and other factors.

Quick Answers

Here are some quick answers to common questions about omega-3 dosage for dogs:

  • For healthy adult dogs, 250-500 mg EPA/DHA per 10 lbs body weight is typically recommended.
  • Puppies may benefit from higher doses like 500-1000 mg EPA/DHA per 10 lbs.
  • Dogs with certain health conditions may need therapeutic doses of 1000-4000 mg EPA/DHA per 10 lbs.
  • Always consult your veterinarian for dosage recommendations tailored to your individual dog.
  • Look for omega-3 fish oil supplements made for dogs, not humans.
  • Cod liver oil is not recommended due to potential vitamin A toxicity.

Omega-3 Basics

Not all omega-3s are created equal when it comes to benefits for dogs. The important omega-3s for dogs are eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). These come from fish and fish oils.

ALA (alpha-linolenic acid) is a third type of omega-3 found in plant sources like flaxseed. Dogs don’t efficiently convert ALA to EPA and DHA, so plant-based omega-3s are not enough on their own.

When looking for an omega-3 supplement for your dog, make sure it provides measurable amounts of EPA and DHA from fish oil, not just ALA.

Benefits of EPA and DHA for Dogs

Some of the evidence-based benefits of EPA and DHA omega-3s for dogs include:

  • Healthy skin and coat – Omega-3s help regulate oil production and reduce inflammation and dry skin.
  • Joint health – EPA/DHA support joint lubrication and flexibility and may help reduce symptoms associated with arthritis.
  • Heart health – Omega-3s are good for cardiac muscle function and blood flow.
  • Brain health – DHA in particular supports cognitive development and function.
  • Immune function – Omega-3s help regulate immune responses.

Omega-3s are anti-inflammatory so they can benefit dogs with inflammatory conditions like allergies, kidney disease, and cancer. There is also some evidence they may help reduce anxiety in dogs.

Omega-3 Dosage Guidelines for Dogs

Recommended omega-3 dosages for dogs vary based on life stage, size, and health status. Here are some general EPA/DHA dosage guidelines:

Healthy Adult Dogs

For healthy adult dogs, a daily dose of 250-500 mg combined EPA/DHA per 10 lbs of body weight is typically recommended. So for example:

  • 10 lb dog = 250-500 mg EPA/DHA per day
  • 50 lb dog = 1250-2500 mg EPA/DHA per day
  • 100 lb dog = 2500-5000 mg EPA/DHA per day


Puppies may benefit from higher omega-3 doses like 500-1000 mg combined EPA/DHA per 10 lbs daily. This supports healthy brain, eye, and joint development.

Senior Dogs

For older dogs prone to arthritis, cognitive decline, heart disease, and other age-related conditions, the higher end of basic dosing may be appropriate. Consult your vet.

Dogs with Health Conditions

Dogs with allergies, kidney disease, cancer, arthritis and other inflammatory conditions may benefit from therapeutic omega-3 doses of 1000-4000 mg EPA/DHA per 10 lbs body weight. Always consult your vet on appropriate therapeutic dosing.

Pregnant/Nursing Dogs

Increasing omega-3 intake during pregnancy and lactation can help support development of puppies. Up to 1000 mg combined EPA/DHA per 10 lbs of body weight may be beneficial.

Choosing an Omega-3 Supplement for Dogs

When choosing an omega-3 supplement for your dog, be sure to select one made specifically for dogs, not humans. Key things to look for include:

  • Fish oil source – Look for supplements derived from fish like salmon, anchovies, sardines, etc.
  • EPA/DHA content – Make sure amounts of EPA and DHA are specified, not just “fish oil.”
  • Dosing form – Liquid oils, capsules, treats/chews to fit your dog’s preferences.
  • Quality – Choose reputable brands that follow quality control standards.
  • Freshness – Check expiration dates and for antioxidants like vitamin E to prevent rancidity.

Avoid Cod Liver Oil

While fish body oils are recommended, cod liver oil is not. Cod liver oil contains excessive amounts of vitamin A which can cause vitamin A toxicity in dogs.

Fish Oil Capsules vs Liquid Oil

Both capsules and liquid omega-3 fish oils for dogs can be good options. Capsules provide convenient, consistent dosing while liquid oils allow for more precise dosage adjustments.

Pick the form your dog will readily consume. You can puncture capsules and squirt onto food or hide oils in food if needed.

Omega-3 Dog Treats/Chewables

If your dog won’t take capsules or oil, treats and chews containing omega-3s are an alternative. However, the omega-3 content is usually lower than supplements so more treats would be needed to provide an equivalent dose.

Omega-3 Dosage Example Cases

To illustrate how omega-3 dosage can vary based on your dog’s unique needs, here are some examples:

Basic Dose – Healthy Adult Dog

Cooper is a healthy 70 pound adult dog with no health conditions. His owner gives Cooper one 1000 mg EPA/DHA capsule daily. This provides about:

  • 70 lbs = 35 lbs (dog’s weight in 10s)
  • 1000 mg EPA/DHA capsules
  • So 1000 mg EPA/DHA per 35 lbs body weight

This falls into the 250-500 mg per 10 lbs general dosage guidelines for adult dogs.

Therapeutic Dose – Arthritic Dog

Sadie is an arthritic 60 pound senior dog. Her veterinarian recommends a therapeutic dose to reduce inflammation and stiffness. Sadie’s owner gives her two 1000 mg EPA/DHA capsules daily, providing 2000 mg EPA/DHA.

  • 60 lbs = 30 lbs (dog’s weight in 10s)
  • 2000 mg EPA/DHA daily
  • So 2000 mg EPA/DHA per 30 lbs body weight

This equates to about 1000 mg EPA/DHA per 15 lbs, meeting the 1000-4000 mg per 10 lbs therapeutic dosing guidelines.

Enhanced Dose – Pregnant Dog

Lady is a 50 pound dog who is pregnant. Her veterinarian suggests an enhanced omega-3 dose to support development of the puppies. Lady’s owner provides:

  • 50 lbs = 25 lbs (dog’s weight in 10s)
  • One 1000 mg EPA/DHA capsule
  • One 500 mg EPA/DHA capsule
  • Total 1500 mg EPA/DHA daily
  • 1500 mg EPA/DHA per 25 lbs body weight

This equates to about 1000 mg EPA/DHA per 17 lbs, meeting dosing guidelines of up to 1000 mg per 10 lbs for pregnant and nursing dogs.

Providing Omega-3s From Diet

In addition to supplements, you can provide omega-3s in your dog’s diet by feeding:

  • Fatty fish like salmon, sardines, mackerel 2-3 times a week
  • High-quality commercial dog foods fortified with EPA/DHA
  • Eggs from chickens fed an omega-3 enriched diet

However, most dogs won’t get optimal amounts of EPA/DHA from diet alone. Supplements help provide precise, sufficient dosing.

Partnering With Your Veterinarian

It’s always best to partner with your veterinarian when adding supplements like omega-3 fish oil to your dog’s regimen. Your vet can help determine the right omega-3 dosage and form for your individual dog based on:

  • Body weight, age, breed
  • Life stage – puppy, adult, senior dog
  • Health status and existing conditions
  • Reproductive status
  • Other medications or supplements

Monitoring your dog’s health and response to omega-3s with your vet is also recommended to adjust dosing if needed over time.

Watching for Side Effects

Omega-3 fish oils are generally very safe for dogs, especially when provided in recommended dosages. However, potential side effects can include:

  • Gastrointestinal upset like vomiting or diarrhea
  • Allergic reactions – typically to other supplement ingredients
  • Increased bleeding risk at very high doses

Start with low doses and monitor your dog. Seek veterinary guidance if any side effects occur.

Frequently Asked Questions

1. Is human fish oil safe for dogs?

No, human omega-3 supplements should not be given to dogs. Dogs require different types and concentrations of omega-3s. Purchase an omega-3 supplement specifically formulated for dogs for optimal health benefits and safety.

2. Can I give my dog cod liver oil?

Cod liver oil is not recommended for dogs. It contains excessive amounts of vitamin A which can cause vitamin A toxicity in high doses. Instead choose supplements derived from fish body oils like salmon oil, sardine oil, anchovy oil, etc.

3. What is the best omega-3 fish oil for dogs?

Some top fish oil brands for dogs include Nordic Naturals, Grizzly, Zesty Paws, and Therabis. Look for oils sustainably sourced from wild fish like salmon and packed with EPA/DHA. Krill oil and algae oils are also options.

4. How much fish oil should I give a 15 lb dog?

For a healthy 15 pound dog, a general guideline would be 125-250 mg combined EPA/DHA daily. Consult your vet for precise dosage recommendations.

5. Are omega-3 fatty acids safe for pregnant dogs?

Yes, omega-3 supplements are safe and beneficial for pregnant and nursing dogs when provided at recommended dosage levels. Omega-3s support development of puppies during this crucial time.

The Bottom Line

Adding an omega-3 fish oil supplement to your dog’s diet can provide valuable health benefits. Omega-3s like EPA and DHA support skin, coat, joint, heart, brain, and immune health. Consult your veterinarian for dosage guidelines based on your dog’s unique needs.

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