Fish Oil vs. Krill Oil: Which One Should You Choose?

Krill Oil VS Fish Oil

Dietary supplements like fish oil and krill oil have become increasingly popular due to their potential health benefits. Both are rich sources of omega-3 fatty acids, essential nutrients that support various aspects of well-being. However, when it comes to choosing between fish oil and krill oil, it's essential to understand the differences to make an informed decision. In this blog post, we will explore the distinctions between fish oil and krill oil and help you decide which one might be the right choice for your specific needs.

Fish Oil

Fish oil is derived from the tissues of fatty fish, such as salmon, mackerel, sardines, and trout. It contains two primary types of omega-3 fatty acids: eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). These fatty acids offer various health benefits, including cardiovascular support, brain health, and anti-inflammatory properties.

Key Advantages of Fish Oil:

  1. High EPA and DHA Content

    Fish oil is typically rich in EPA and DHA, which are essential for numerous bodily functions.

  2. Proven Health Benefits

    Extensive research supports the cardiovascular, cognitive, and anti-inflammatory benefits of fish oil.

  3. Wider Availability

    Fish oil supplements are widely available and come in various forms, such as softgels, liquids, and gummies.

Krill Oil

Krill oil, on the other hand, is extracted from tiny, shrimp-like crustaceans called krill. It contains omega-3 fatty acids in the form of EPA and DHA, similar to fish oil. However, krill oil has an additional component—phospholipids—which may affect its absorption and efficacy.

Key Advantages of Krill Oil:

  1. Phospholipid Delivery

    The omega-3s in krill oil are bound to phospholipids, which may enhance their absorption in the body.

  2. Astaxanthin

    Krill oil naturally contains astaxanthin, a powerful antioxidant with potential health benefits.

  3. Less Risk of Oxidation

    Due to the presence of astaxanthin, krill oil may be less prone to oxidation compared to fish oil.

Which Should You Choose?

The choice between fish oil and krill oil depends on your specific health goals and preferences. Here are some factors to consider:

  1. Absorption

    If you're concerned about omega-3 absorption, especially if you have digestive issues, krill oil's phospholipid structure might be advantageous.

  2. Sustainability

    Krill is a crucial part of the marine food chain. Choosing krill oil from sustainable sources can be environmentally responsible.

  3. Allergies

    Some individuals may have allergies to crustaceans like krill. If you have seafood allergies, fish oil might be a safer choice.

  4. Cost

    Krill oil supplements are often more expensive than fish oil. Consider your budget when making a decision.

  5. Health Goals

    Evaluate your specific health objectives. Both fish oil and krill oil offer omega-3 benefits, so choose the one that aligns with your goals.


Fish oil and krill oil are both valuable sources of omega-3 fatty acids, each with its unique advantages. To determine which one is right for you, consider factors like absorption, sustainability, allergies, cost, and your specific health goals. Consulting with a healthcare professional can also provide personalized guidance on selecting the most suitable supplement. Ultimately, both fish oil and krill oil can play a role in supporting your overall well-being.