Fish Oil for Cats: Benefits of An Omega 3 Food or Supplement Plan - My Blissful Pet

Fish Oil for Cats: Benefits of An Omega 3 Food or Supplement Plan

Fish Oil for Cats: Benefits of An Omega 3 Food or Supplement Plan

Fish oil for cats has become increasingly popular for being rich in beneficial omega-3 fatty acids. It can be a panacea for better skin and coat health, reduced inflammation, and improved cognitive functions.

At My Blissful Pet we offer crafted CBD oil with Omega 3s from herrings and sardines, making it the perfect fish oil supplement for your cat's wellness.

As obligate carnivores, cats need nutrients that are not produced by their bodies. That is why adding omega-3s from fish oil is an important consideration for their health.



  1. Essential Omega-3 Fatty Acids: Fish oil is crucial for cats. It provides omega-3 fatty acids like EPA and DHA, which are not produced by their bodies. They are vital for skin and coat health, for reducing inflammation, and enhancing cognitive functions.

  2. EPA and DHA Benefits: EPA helps reduce inflammation and supports immune health. DHA is essential for neural development in kittens and cognitive function in adult cats. Both contribute to overall wellness, including joint health and brain development.

  3. Omega-3 vs Omega-6 Balance: The balance between omega-3 and omega-6 fatty acids is important. Omega-3s, found in fish oil, are anti-inflammatory, whereas omega-6s can promote inflammation.

  4. Fish Oil for Specific Conditions: Fish oil can be beneficial for cats with conditions like Inflammatory Bowel Disease, arthritis, and potentially cancer and diabetes. It's also helpful for managing allergies due to its anti-inflammatory properties.

  5. Safe Supplementation Practices: Pick high-quality fish oil, consult a veterinarian, and consider your cat's diet. Potential side effects like allergic reactions and digestive issues should be monitored.


Fish Oil Ingredients and Their Roles

Fish oil is a key element of feline health, it contains essential fatty acids beneficial for the whole body. The two most famous fatty acids found in the fish oil that you give your cat are Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). They are omega-3 fatty acids that play crucial roles in the health of cats and dogs ...and people alike.

EPA and Its Functions

Eicosapentaenoic acid (EPA) is an omega-3 fatty acid that serves as a precursor for anti-inflammatory eicosanoids. It can support a cat's immune response and joint health. Research on dietary EPA indicates that it can improve the lipid profile in cats.

  • Anti-inflammatory: Helps in reducing inflammation throughout the cat's body.
  • Immune health: Supports the immune system function to react properly to health threats.

DHA and Brain Development

Docosahexaenoic acid (DHA) is crucial for the neural development of cats, particularly in kittens. It helps with the development of the central nervous system and retinal tissues. It also contributes to cognitive function in adult cats.

  • Neural development: Essential for proper brain and eye development in kittens.
  • Cognitive function: Aids in maintaining the cognitive function of adult cats.


Omega-3 vs Omega-6

The balance between omega-3 and omega-6 fatty acids is important for a cat's health. Omega-3 fats are primarily found in fish oil and are anti-inflammatory. Omega-6 fats can promote inflammatory responses. In fact, high levels of arachidonic acid (ARA) or linoleic acid (LA), both omega-6 fatty acids, can heighten inflammation (Innes, 2018).

  • Omega-3 fatty acids: Include EPA and DHA, both of which contribute anti-inflammatory properties and are essential.
  • Omega-6 fatty acids: Although essential in small amounts, an excess can lead to inflammation; thus, a balance with omega-3s is necessary.

In cat nutrition, it is important to maintain an appropriate ratio of these fats to support optimal health.


Benefits of Fish Oil for Cats

Fish oil is a great source of omega-3 fatty acids like EPA and DHA. It plays key roles with benefits rarely seen with other nutrients. Here's an example of the main benefits of omega 3 for cats.

Supports Cognitive Function

Fish oil can enhance cognitive function, particularly in middle-aged and older felines. DHA is key in brain health, and studies have linked dietary supplementation with fish oil to improved cognitive abilities in cats. Meaning that cognitive processes such as memory and learning can improve

Improves Skin Health

Cats, like dogs and humans, can suffer from dry skin. The hydration effects of omega-3s on the skin can be linked to their role in the production of skin lipids. These lipids are crucial components of the skin's barrier, which when compromised, can lead to increased transepidermal water loss and dry, flaky skin.

By fortifying the lipid barrier, omega-3s help to lock in moisture, making the skin more hydrated and supple (Healthline). Also, omega-3 metabolites reduce inflammation in the skin, that is often associated with dryness. (Sawada, 2020).

Aids Joint Health and Reduces Inflammation

When cats age, they are likely to be less agile than when they were just a few years old. In this case, fish oil can support joint health. For cats suffering from arthritis or joint pain, the anti-inflammatory agents found in fish oil, particularly EPA, can help alleviate discomfort. A similar result can also be obtained using CBD oil, that can help with joint pain and arthritis. Regular supplementation can contribute to improved joint health by reducing inflammation and potentially lessening reliance on medication.

Promotes Kidney Health

Fish oil may benefit cats with kidney disease by modifying plasma lipids. Research suggests that omega-3 fatty acids can have protective effects on the kidneys, helping to maintain adequate plasma arachidonate and supporting overall renal function.

Contributes to Heart Health

The omega-3 fatty acids in fish oil are also associated with better heart health in cats (Freeman, 2010). They may help reduce the risk of heart disease by preventing the build-up of harmful fats in blood vessels, managing blood pressure, and providing anti-inflammatory effects to support cardiovascular function.

Helps with a Shiny Coat

A shiny coat is often a reflection of good health in animals, including pets such as dogs and cats. Omega-3 fatty acids play a critical role in maintaining the health and luster of a cat's coat. These fatty acids are incorporated into the cell membranes of skin cells, contributing to the integrity and function of the skin as an organ. Healthy skin cells are essential for the production of natural oils that coat the fur, giving it a glossy appearance.

The anti-inflammatory properties of omega-3s also contribute indirectly to a healthier coat by reducing skin inflammation, which can lead to dullness and excessive shedding (Well and Good). Additionally, the role of omega-3s in supporting immune health can help prevent skin infections that may otherwise damage the skin and fur.

Impact on Vision and Brain Health

Fish oil is a rich source of omega-3 fatty acids, particularly EPA and DHA, which are essential for the maintenance of healthy vision and cognitive function in cats. DHA is a major structural component of the retina, crucial for maintaining eye health, whereas EPA supports the overall function of the brain. Studies suggest that increasing dietary DHA can lead to measurable improvements in the plasma phospholipid levels, demonstrating enhanced eye and brain health.

Fish Oil for Specific Conditions

Fish oil has been investigated for its therapeutic potential in managing several health conditions in cats:

  • Inflammatory Bowel Disease (IBD): The anti-inflammatory properties of omega-3 fatty acids help in reducing inflammation associated with IBD, potentially alleviating gastrointestinal symptoms.

  • Cancer: While omega-3 fatty acids are not a cure for cancer, they may help in improving the overall quality of life and support treatment in cats with cancer, due to their anti-inflammatory effects.

  • Diabetes: Fish oils may influence blood sugar levels; however, more research is needed to determine their efficacy in the management of diabetes in cats.

  • Inflammatory Diseases: Conditions like arthritis can benefit from fish oil supplementation, as EPA and DHA have been shown to help reduce joint inflammation and improve mobility in affected cats.

It is essential to choose a high-quality fish oil product and consult a veterinarian before supplementing a cat's diet, especially for the management of specific health issues, to ensure safety and appropriate dosage.


Omega 3 and allergies

Skin allergies are very common in cats. They can stay in one spot that becomes very itchy or extend to the whole body. Just like dogs and people, cats can be allergic to many things, like insects, food, dust, and dirt. But there are studies showing that fish oil given to cats will help to manage the allergic reactions by reducing how strongly an allergy manifests.

Omega-3 Fatty Acids and Inflammatory Pathways

The anti-inflammatory action is partly attributed to the ability of omega-3 fatty acids, particularly eicosapentaenoic acid (EPA), to interfere with the arachidonic acid metabolism, leading to a decrease in the production of pro-inflammatory eicosanoids.

Furthermore, omega-3 fatty acids have been shown to lead to the production of specialized pro-resolving mediators (SPMs), such as protectins, which actively resolve inflammation. These SPMs are instrumental in dampening the inflammatory response and promoting the clearance of inflammatory cells, thus potentially reducing the severity of allergic reactions (NCBI).

Omega-3 Fatty Acids in Asthma and Allergic Diseases

Epidemiological and observational studies have investigated the effect of fish intake or omega-3 fatty acid supplementation on asthma and allergic diseases. The anti-inflammatory nutrients DHA and EPA are commonly thought to have protective effects in these conditions (PubMed). However, the evidence is not entirely conclusive, and the effectiveness of omega-3 fatty acids in preventing allergic diseases remains a subject of debate.

Systematic Review and Meta-analysis on Omega-3 and Omega-6 Oils

A systematic review and meta-analysis aimed to evaluate the effectiveness of omega-3 and omega-6 oils in the primary prevention of allergic disease. The review concluded that supplementation with omega-3 or omega-6 oils was unlikely to prevent sensitization or allergic disease (NCBI). Additionally, meta-analyses failed to identify consistent benefits associated with the use of these oils for the prevention of atopic eczema, asthma, allergic rhinitis, or food allergy (PubMed).


Fish Oil Dosage

The specific needs of your cat will help pick the correct dose, after considering factors such as age, weight, and health condition. Veterinarians typically recommend a dosing range from 250 to 500 milligrams of EPA and DHA combined per day for the average-sized cat (Lenox, 2013). It is crucial to avoid excessive amounts to prevent nutrient imbalances and potential health issues.

Choosing Between Liquid and Capsules

Fish oil for cats comes in two main forms: liquid, treats and capsules. For example, liquid fish oil can have a fishy odor that can be appealing to cats and can be easily mixed with a cat’s diet. Cat treats are a great choice too because cats, like dogs, can be food-driven (at least my three cats are!). Capsules instead may be difficult to administer, and are not the best for of dietary supplement for cats. In the end, the cat's preference and the owner's ease of administration will be the decisive factors.

Understanding the Source: The Types of Fish Matters

The fatty acid profile in fish oil is influenced by the source fish species. Oils derived from salmon, mackerel, sardines, herringsanchovies, and trout are generally high in EPA and DHA, the active omega-3 components. Tuna-based oils can also be beneficial, but one must ensure these are low in any potential contaminants like mercury. Quality and sustainability of the fish oil source are vital when choosing a supplement for a cat's diet.


Safety and Quality Concerns

fish oil for cats safety mbp

Safety and quality must be kept in mind, especially when there are multiple ingredients. These encompass the purity of the product, its freshness, and potential contamination from heavy metals, which can pose risks to a cat's health.

Recognizing High-Quality Supplements

High-quality fish oil supplements are characteristically made by reputable companies that adhere to stringent safety standards. They should demonstrate potency and sustainability, often indicated on their packaging or through accessible company reports. When choosing supplements, one should look for certifications from recognized authorities which affirm that the products are free from harmful levels of contaminants.

  • Certifications to look for:
    • Third-party testing seals
    • Sustainability certifications
    • Clear potency labeling

Consider the Risks of Contaminants and Heavy Metals

Fish oil supplements can be susceptible to contamination with heavy metals, such as mercury, which is particularly harmful. Cats are sensitive animals, and even small amounts of such contaminants can be detrimental to their health. Reputable suppliers usually perform thorough testing to ensure their products fall below the actionable levels for heavy metals and other contaminants.

  • Safe levels:
    • Mercury: Less than 0.1 parts per million
    • Other heavy metals: Comply with industry and safety guidelines

Purity and Freshness are a Must

A commitment to purity and freshness ensures that the supplement is safe and has safe ingredients for pets. Customers should seek suppliers who offer a freshness guarantee bu or provide a manufacturing date.

  • Indicators of freshness:
    • Totox values: As low as possible (it indicates the oil's overall oxidation state)
    • Clear 'best by' dates
    • Packaging that protects from light and air exposure
    • Lab tests if mixed with CBD


Potential Side Effects of Fish Oil

Dealing with Allergic Reactions

While rare, some cats may experience allergic reactions to fish oil, which can manifest as skin irritation or itching. If symptoms such as hives or increased scratching occur, discontinuing fish oil and consulting a veterinarian is essential. This is often caused by low purity products, thus, sourcing it from reputable manufacturers can reduce the risk of contaminants causing an allergic response.

Digestive Upsets and How to Address Them

Fish oil may cause digestive issues such as diarrhea or vomiting in some cats. Introducing fish oil gradually can help the pet's system adjust. If digestive upsets persist, it's vital to:

  • Reduce the dosage.
  • Assess diet compatibility.
  • Seek veterinary advice if symptoms continue.

Overdose Risks and Blood Clotting Issues

An overdose of fish oil can affect coagulation and result in excessive bleeding due to its impact on blood clotting (McEwen, 2013). Signs of an overdose include:

  • Bruising
  • Nosebleeds
  • Bloody stools

If any of these symptoms are observed, it's important to stop fish oil supplements immediately and contact a veterinarian. Following dosing instructions and regular blood testing can prevent compounding effects of fish oil with pre-existing blood clotting disorders.


Consulting the Experts

fish oil for cats veterinarian mbp

Consulting with a veterinarian is paramount before adding fish oil into a cat's diet. Reason being, they can help you understand a cat's unique situation and determine if fish oil is appropriate for an individual pet's condition. A veterinarian can also provide recommended dosage guidelines to prevent any adverse effects from over-supplementation.

Deciphering Labels on Supplement Bottles

When reading labels, check these points out:

  • EPA/DHA Content: Labels should clearly state the exact amounts of omega-3 fatty acids.
  • Source: Sustainable fish sources like salmon, mackerel, or sardines are preferable.
  • Formulation Details: The label should indicate if the fish oil is in a triglyceride, ethyl ester, or re-esterified triglyceride form, the latter often being more easily absorbed.

By carefully assessing these details, cat owners can ensure they provide their pets with the highest quality of fish oil supplementation.


Mixing Fish Oil with Cat Food

Integrating fish oil into a cat's food regimen can enhance their diet with essential omega-3 fatty acids, which are beneficial for a cat's skin, coat, and overall health.

Balancing Diet with Supplements

When adding fish oil to a cat's diet, it is crucial to maintain a balanced diet to avoid nutritional imbalances. Fish oil supplements should be introduced gradually and measured accurately to align with the cat's dietary needs. A study on the effects of fish oil versus sunflower oil on cats' plasma indicates that carefully measured doses of dietary fish oil can influence the fatty acid composition in their bodies, which is a critical factor to monitor when adjusting their diet.

Preparing Fish Oil-Infused Meals for Cats

To prepare fish oil-infused meals for cats, start by consulting with a veterinarian to determine the appropriate dosage based on the cat's weight, health, and dietary requirements. Gradually mix in the recommended amount of fish oil into the cat's food, ensuring thorough distribution to prevent any rejection of food due to unfamiliar smells or tastes. It's important to consider the type of fish oil, as a study highlights that the inflammatory and immune responses in cats can be influenced by whether they are fed fish oil or flaxseed oil. This information underscores the importance of selecting the right type of fish oil for your feline's diet.


Frequently Asked Questions

What are the benefits of fish oil for cats with dry skin?

Fish oil is rich in omega-3 fatty acids, which have been shown to support skin health in cats. It can improve the condition of dry or flaky skin by promoting a healthier, shinier coat.

Is fish oil safe for cats with kidney disease, and if so, which kind?

Fish oil can be safe for cats with kidney disease under veterinary guidance. The anti-inflammatory properties of omega-3 fatty acids may benefit cats with this condition, but it's crucial to choose a high-quality, low-phosphorus fish oil supplement.

How does fish oil compare to salmon oil in terms of health benefits for cats?

Both fish oil and salmon oil are beneficial for cats, providing essential omega-3 fatty acids. However, salmon oil is typically derived from wild-caught salmon and may provide a higher concentration of these nutrients.

Can I safely give my cat fish oil supplements designed for humans?

Cats should only be given fish oil supplements specifically designed for them. Human supplements may contain higher doses and additives that are not safe for feline consumption.

In what form should I administer fish oil to my cat for optimal absorption?

Administering fish oil in a liquid form, either mixed with food or directly, can help ensure optimal absorption. It's important to measure the correct dose to avoid any deficiencies or excesses.

What considerations should I consider when choosing fish oil for my cat?

When choosing fish oil for a cat, factors to consider include the supplement's source, concentration of EPA and DHA, freshness, and whether it has been tested for contaminants such as heavy metals. It's also important to consider if the product has a veterinary recommendation or certification.




  • Jacqueline K Innes, Philip C Calder (2018). Omega-6 fatty acids and inflammation. Prostaglandins, Leukotrienes and Essential Fatty Acids.
  • Healthline -
  • Yu Sawada, Natsuko Saito-Sasaki, and Motonobu Nakamura (2020). Omega 3 Fatty Acid and Skin Diseases. Frontiers in Immunology 
  • Well and Good.
  • Freeman, L. M. (2010). Beneficial effects of omega-3 fatty acids in cardiovascular disease. Journal of Small Animal Practice
  • Lenox, C. E., & Bauer, J. E. (2013). Potential adverse effects of omega-3 Fatty acids in dogs and cats. Journal of Veterinary Internal Medicine.
  • Effects of Omega-3 Polyunsaturated Fatty Acids on Platelet Function in Healthy Subjects and Subjects with Cardiovascular Disease
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