Whole-Food Immune & Cellular Support from Shark Liver Oil
Deep Defense delivers naturally occurring alkylglycerols (AKGs), squalene, and Vitamin A from responsibly sourced shark liver oil to support immune resilience, cellular health, and recovery from physical stress.*
Whole-Food Immune & Cellular Support from Shark Liver Oil
Deep Defense delivers naturally occurring alkylglycerols (AKGs), squalene, and Vitamin A from responsibly sourced shark liver oil to support immune resilience, cellular health, and recovery from physical stress.*
Immune Resilience & Defense*
Cellular Health & Recovery*
Antioxidant Support*
Whole-Food Lipid Nutrition*
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Take two softgels once per day. If you’re new to seafood supplements, start with 1-2 capsules per day and gradually increase by one capsule daily.
For best results, use consistently as part of your routine.
Need guidance? We’re here to help.
| Nutrient | Amount / %DV |
|---|---|
| Alkylglycerols | 200.0 mg |
*Percent Daily Value (%DV) based on FDA Daily Values for adults and children 4+. Nutrient values shown are derived from laboratory testing of a single production lot and should be considered guidelines. As a natural whole-food product, nutrient levels may vary between lots.
All orders ship from our warehouse within two business days (often on the same day).
If you're not satisfied with our products for whatever reason, you have 60 days to return them for a refund (excluding shipping fees).
Shark Liver Oil contains alkylglycerols (AKGs) and squalene, compounds traditionally used to support immune defense and tissue healing. Naturally rich in vitamins A and D, it helps strengthen mucosal barriers and promote the body’s natural healing processes.*
The immune system relies on balanced signaling and healthy cells to function properly. Alkylglycerols, found naturally in shark liver oil and human breast milk, help support normal immune cell activity and resilience during periods of increased physical or environmental stress. Deep Defense is designed for consistent, everyday immune support — not short-term stimulation.*
Shark liver oil has been traditionally valued for its unique lipid profile, particularly its naturally occurring alkylglycerols (AKGs). Unlike common fish oils that focus primarily on omega-3s, shark liver oil provides rare fats that support immune function and cellular communication. Deep Defense delivers these compounds in a whole-food form that works with the body’s natural defense systems rather than overstimulating them.*
We prioritize purity and potency with rigorous third-party lab testing at every stage of production. Transparency matters, so we make our test results available in our help center. You can learn more about our five-stage testing process in this blog article.
Our supplements come in amber glass bottles with metal lids (never plastic). Dark glass helps preserve nutrient integrity by protecting against light and oxygen, while eliminating the risk of microplastic leaching. It’s safer for you, better for the environment and fully recyclable — giving you peace of mind with every bottle.
Deep Defense is made from shark liver oil sourced from the longnose spurdog (Squalus blainville), a commercially fished species harvested along the west coast of Europe. Sharks are not caught for their livers. The entire animal is used for human consumption, and the livers, once discarded, are responsibly utilized to create this product. We firmly oppose shark finning and work with partners committed to sustainable fishing practices, education, and long-term marine conservation.
Deep Defense is a whole-food supplement made from shark liver oil that naturally contains alkylglycerols (AKGs), squalene, and Vitamin A. It’s designed to support immune function, cellular health, and overall resilience as part of a daily wellness routine.*
Deep Defense is commonly used by people who:
Many customers use Deep Defense during periods of increased stress, heavy travel, intense training blocks, or when they want extra immune reinforcement.
It works well alongside organ supplements and omega-3s as part of a broader, animal-based supplement stack.
Yes. Deep Defense is intended for daily use as part of a balanced wellness routine. Because it contains naturally occurring Vitamin A, we recommend following the suggested use and consulting your healthcare professional if you are pregnant, nursing, or have a medical condition.*
Deep Defense provides naturally occurring compounds that help support the body’s normal immune response and cellular defenses. When taken consistently, it helps promote everyday immune resilience rather than short-term stimulation.*
AKGs are naturally occurring fats found in shark liver oil and human breast milk. They play a role in supporting normal immune system activity and are valued for their connection to immune resilience and cellular health.*
Shark liver oil and fish oil are both marine-derived fats, but they serve different purposes and contain different primary compounds.
Fish oil (such as Wild Alaskan Salmon Oil) is primarily valued for its omega-3 fatty acids — especially EPA and DHA — which are commonly associated with cardiovascular, brain and joint support.
Shark liver oil, on the other hand, is not a meaningful source of omega-3s. Its distinguishing compounds are alkylglycerols (AKGs), which are naturally occurring lipids also found in human breast milk and bone marrow. Shark liver oil is often used to support immune resilience and overall vitality, particularly during high-stress periods.
In simple terms:
They are not interchangeable, and many customers choose to use both as part of a comprehensive marine-based supplement strategy.
Most shark liver oil supplements look similar on the label. The real differences come down to testing, freshness and transparency.
Deep Defense is:
Many marine oil supplements rely on generic supplier documentation. We require and publish batch-level testing.
It’s also packaged in a glass bottle with a metal lid to minimize plastic contact and help preserve stability.
You can find the latest test reports directly below the BUY button.
This is one of the most common questions we get, and it’s a fair one.
Our shark liver oil is sourced from Squalus blainville (commonly known as longnose spurdog). This species is not classified as endangered.
The sharks used for our shark liver oil are not harvested specifically for their livers. They are caught for their meat as part of regulated commercial fisheries. The liver is a byproduct of that harvest.
Instead of discarding the liver, it’s processed into oil. That’s a more responsible, nose-to-tail approach that makes use of material that would otherwise go to waste.
Our supplier operates under strict European food safety and traceability standards, and every batch is tested for heavy metals, dioxins, PCBs, microbial contaminants, and oxidation markers before release.
You can review the batch-specific Certificate of Analysis (COA) linked directly below the BUY button.
No. We firmly oppose shark finning and do not source from fisheries involved in that practice. Our sourcing partners prioritize responsible fishing, full-animal utilization, and long-term marine conservation.*
Shark liver oil is generally well tolerated when taken as directed.
In rare cases, some people may notice mild digestive discomfort (such as slight nausea) if taken on an empty stomach. Because shark liver oil is a fat-based supplement, taking it with food typically prevents this.
As with any marine-derived product, people with fish allergies should avoid use. If you’re pregnant, breastfeeding, taking anticoagulant medication, or managing a medical condition, consult your healthcare provider before supplementing.
At MK Supplements, we’re more than just a brand—we’re a family dedicated to real health, real food, and real results. The Kummer family believes in the power of ancestral nutrition, sourcing only the purest, regeneratively raised ingredients to fuel your body the way nature intended. We use what we sell, we live what we teach, and we stand behind every bottle.
