A woman feeding her pet dogs in her kitchen
Lifestyle

How Do You Give Fish Oil to Dogs?

Omega-3 fatty acids play a vital role in enhancing the well-being of canine companions, and fish oil is a good source of these essential acids. Enriched with EPA (eicosapentaenoic acid), DHA (docosahexaenoic acid), and ALA (alpha-lipoic acid), fish oil contributes to reducing inflammation, alleviating itchy skin, and promoting overall heart health in pets, among other significant health benefits.  


If you've considered adding fish oil to your dog's food, you may be curious about the best way to incorporate it into their diet. Let's take a closer look at the various forms of fish oil available and the proper methods for administering them to your furry friend.

Where Can Dogs Get Fish Oil?

The most common sources of fish oil for dogs include capsules or pills, cooked fish, and liquid and chewable supplements.


  • Fish oil capsules or pills are ingested, instantly giving your canine their dose of the supplement.
  • Cooked fish, including salmon, cod, anchovies, and sardines, is also a great way of giving fish oil to dogs. We recommend buying fish with shorter lifespans. Tuna, swordfish, and other longer-living fish contain more heavy metals that can negatively affect your canine’s health.
  • You can also have your pet fish consume oil through a liquid supplement. If you choose this source of fish oil, be sure to measure the recommended amount, and your canine should take that dosage.
  • Chewable fish oil supplements come in various formulations, designed to cater to different preferences. Whether in treat-like chews or other chewable formats, they aim to combine nutritional benefits with a tasty experience.

Alternatively, you can buy over-the-counter fish oil supplements with the necessary ingredients for your canine. Your options include natural triglyceride, ethyl ester, and synthetic triglyceride oil.

How Much Fish Oil Should I Give to My Canine?

After choosing your dog’s source of fish oil, you must give them the right dosage.


Ideally, canines should consume 75 to 100 milligrams/kilograms of EPA/DHA daily. Experts from the Canine Arthritis Resource and Education (CARE) website recommend that dogs be given around 100 mg/kg of EPA/DHA, with the maximum daily dose at 310(kg)¾.


Remember that your pet’s daily omega-3 intake depends on their weight, age, size, nutritional needs, and health condition. If your canine is diagnosed with a pre-existing condition, giving them fish oil isn’t advisable.

How Do I Determine the Right Omega-3 Dosage for My Dog?

You’ll need your pet’s body weight in kilograms (kg) to determine their daily omega-3 dosage, which you can get by dividing their weight in pounds (lb) by 2.2.


Here’s how CARE determined a 50-lb canine’s daily omega-3 intake:


50 lbs ÷ 2.2 = 22.7 kg

22.7 kg × 100 mg/kg = 2,270 mg (recommended daily fish oil dosage for a 50-lb dog)


As for the maximum dose, 50-lb canines should take around 3,200 mg of omega-3 a day.


CARE has also provided dog owners with dosing charts by weight, which you can see below.

Recommended Omega-3 Dosing for Dogs Weighing 5-50 lbs

Body Weight (lbs)

Body Weight (kg)

Recommended Dosage (100 mg/kg)

Maximum Daily Dose

5

2.3

230 mg

574 mg

10

4.5

450 mg

965 mg

15

6.8

680 mg

1,308 mg

20

9.1

910 mg

1,623 mg

25

11.4

1,140 mg

1,919 mg

30

13.6

1,360 mg

2,200 mg

35

15.9

1,590 mg

2,469 mg

40

18.2

1,820 mg

2,730 mg

45

20.5

2,050 mg

2,982 mg

50

22.7

2,270 mg

3,227 mg

Recommended Omega-3 Dosing for Dogs Weighing 50-100 lbs

Body Weight (lbs)

Body Weight (kg)

Recommended Dosage (100 mg/kg)

Maximum Daily Dose

50

22.7

2,270 mg

3,227 mg

55

25

2,500 mg

3,466 mg

60

27.3

2,730 mg

3,700 mg

65

29.5

2,950 mg

3,924 mg

70

31.8

3,180 mg

4,153 mg

75

34.1

3,410 mg

4,374 mg

80

36.4

3,640 mg

4,590 mg

85

38.6

3,860 mg

4,804 mg

90

41

4,100 mg

5,014 mg

95

43.2

4,320 mg

5,222 mg

100

45.5

4,550 mg

5,427 mg

Recommended Omega-3 Dosing for Dogs Weighing 100-150 lbs

Body Weight (lbs)

Body Weight (kg)

Recommended Dosage (100 mg/kg)

Maximum Daily Dose

100

45.5

4,550 mg

5,427 mg

105

47.7

4,770 mg

5,629 mg

110

50

5,000 mg

5,829 mg

115

52.3

5,230 mg

6,027 mg

120

54.5

5,450 mg

6,222 mg

125

56.8

5,680 mg

6,415 mg

130

59.1

5,910 mg

6,607 mg

135

61.3

6,130 mg

6,797 mg

140

63.6

6,360 mg

6,985 mg

145

65.9

6,590 mg

7,171 mg

150

68.2

6,820 mg

7,356 mg

How Much Natural Fish Oil Should I Give to My Pet?

If you want to add natural fish oil to your canine’s diet, CARE’s dosing recommendations below may help you determine their daily intake.


  • Anchovies: 3,400 mg of EPA/DHA
  • Sardines: 2,800 mg of EPA/DHA (around 100 mg per small sardine)
  • Salmon: 2,200 to 3,800 mg of EPA/DHA
  • Will My Pet Experience Side Effects From Taking Fish Oil?

    Your pet should experience minimal side effects when they consume the right dosage of fish oil. If your canine gets the supplement from dog food with fish meal or omega-3, consider adjusting their intake. You’ll want to ensure your dog takes the proper amount of fish oil, though.


    Insufficient or excessive doses of the supplement may cause vomiting, diarrhea, changes in platelet and immune function, slow healing of wounds, and weight gain. Additionally, your pet may feel drowsy, develop fishy-smelling breath or skin, feel extremely itchy, or have an oily coat and flaking skin from consuming fish oil.

    Keep Your Canine Healthy with Sufficient Amounts of Fish Oil

    Whether it’s in capsules, cooked fish, or liquid or chewable form, fish oil can help your pet stay healthy. It is important to learn how to give this supplement to dogs and how much of it they should take. Proper dosage ensures your canine enjoys the health benefits of fish oil to the fullest.


    Need more expert tips on dog health and nutrition? Visit the Stryde blog today.