w-3 Oil

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NEW Larger Size with 2x the DHA sourced from algae and 3x the natural Vitamin E. w-3 Oil is designed as an equine energy and essential fatty acid supplement to support your horse's cardiovascular function, skin, joint health and weight maintenance. All the omega-3 benefits of fish oil, without the fishy smell and taste.
* Based on a 500 kg (1100 lb) horse at a feeding rate of 100 mL per day
w-3 Oil Supports:
  • Weight Maintenance
  • Energy and Performance
  • Cardiovascular Health
  • Skin and Hair Condition
  • Joint Comfort
  • Immune Function
  • Reproductive Health
  • Metabolism
  • Mood Balance

Mad Barn’s w-3 Oil is the ultimate essential fatty acid and energy supplement for your horse. Carefully formulated with proven ingredients, this product supports cardiovascular function, immune health, skin and joint health, weight maintenance and more.

w-3 Oil contains both plant and marine sources of natural fatty acids, as well as the essential fatty acid DHA, which is not found in plant sources of oil/fat.

w-3 Oil is one of the only equine supplements made with microalgae-synthesized DHA, which has all the benefits of fish oil but is far more palatable to the horse.

Finally… a high-quality supplemental oil for your horse that goes above and beyond at a great price.


w-3 Oil is now available in a larger 5 L pouch size with double the amount of DHA and triple the Vitamin E at a slightly lower cost per serving! This change helps to reduce Mad Barn’s environmental footprint, using 60% less packaging.

More value, better health for the horse and less impact on the environment – a major product improvement and no increase in cost.


Why Supplement with w-3 Oil?

Supplementing fat in your horse’s diet may be beneficial at all life stages. However, w-3 Oil is more than just an equine fat supplement. It’s an extra-fortified oil that supplies your horse with the essential fatty acid DHA which is not found in plant-based diets. It is further fortified with high levels of Vitamin E.

Horses do not obtain the long chain fatty acid DHA from their diet. They convert the essential fatty acid ALA into DHA, but the conversion is not efficient and may lead to sub-optimal levels. Supplementing can avoid this and enhance cognitive function, improve cardiovascular health, and reduce inflammatory processes.

Cool Energy

w-3 Oil delivers high amounts of polyunsaturated fatty acids (PUFAs).

Unlike starch and other carbohydrates, fatty acids are metabolized at a much slower rate and utilized very efficiently in the horse’s body. The resulting effects of feeding supplemental fatty acids are:

  1. Reduced spikes in blood glucose that can trigger excitability and sensitivity in a horse following a starch-heavy meal
  2. Lowered risk of hind gut acidosis and intestinal discomfort that arises from feeding high-grain diets
  3. Increased muscle glycogen stores that supply lasting energy for high-intensity exercise

Not only is w-3 Oil beneficial as a source of energy, but it will also make your horse’s coat gleam! When the diet is higher in fat, sebum production in the horse’s skin increases, which lends the coat a shiny appearance.

Fight Inflammation with DHA for horses

w-3 Oil contains high levels of natural DHA, or Docosahexaenoic Acid, an omega-3 fatty acid. DHA is synthesized in the horse’s body from ALA (Alpha-linolenic acid), but the conversion efficiency is extremely low and it must be obtained from dietary sources to elevate levels for improved health benefits.

w-3 Oil contains a supplemental source of DHA derived from marine algae. w-3 Oil is one of the only equine fatty acid supplements on the market to provide DHA from marine algae- a source that is much more sustainable and concentrated than DHA derived from fish.

Better yet, the resulting oil doesn’t smell or taste like fish. Horses love the taste of w-3 Oil!

Increasing the amount of omega-3 fatty acids in your horse’s diet can decrease the production of inflammatory molecules in cells. This can result in better regulation of the inflammatory response that stems from conditions such as:

  • Laminitis
  • Equine Metabolic Disorder
  • Insulin Resistance
  • Degenerative joint disease
  • Allergies
  • Chronic lower airway diseases

Antioxidant Protection with Vitamin E

Each bottle of w-3 Oil contains high levels of natural vitamin E, also known as d-alpha-tocopherol. Vitamin E is a fat-soluble vitamin that is often found in very low levels in the modern equine diet.

Studies involving horses show that natural vitamin E is more bio-available and more easily absorbed and retained in tissues than synthetic vitamin E (dl-alpha-tocopherol).

Vitamin E works as an antioxidant alongside vitamin C, glutathione, and selenium to combat oxidative stress. It works by protecting the polyunsaturated fatty acids in cell membrane phospholipids and plasma lipoproteins, contributing to improved cellular membrane integrity.

Supplementing natural vitamin E in the equine diet, in combination with essential fatty acids, can reduce oxidative tissue damage that emerges from:

  • Strenuous exercise
  • Systemic inflammation from metabolic diseases
  • Neurological diseases
  • Muscular disorders such as RER (Recurrrent Exertional Rhabdomyolysis)

You should always consult a qualified nutritionist before altering your feed program. Submit your horse’s diet for analysis online and one of our equine nutritionists will be happy to provide a complementary review.

Algal DHA2019-10-24T20:17:08-04:00

LG MAXAlgal DHA (LG-MAX) is a DHA supplement developed by Alltech that is derived from marine algae. It provides high levels of DHA comparable to fish oil without having a fishy smell or taste, so horses find it extremely palatable.

Sourcing DHA from algae is a more sustainable process than sourcing it from fish. There is estimated to be more than 800,000 species of algae, all with very high genetic diversity and extremely fast growth rates. Producing DHA from algae is also a much more efficient process than producing fish, as algae does not need to be fed animal products in order to grow.

The DHA produced in algae is an Omega-3 fatty acid that functions in the body as an anti-inflammatory, antioxidant and neurogenerative molecule, with increasing amounts of research proving the efficacy of its supplementation in the equine diet.

Docosahexaenoic Acid2022-11-07T11:39:40-05:00

Docosahexaenoic AcidDocosahexaenoic Acid (DHA) is a polyunsaturated omega-3 fatty acid.

DHA is an “essential fatty acid” because it is fundamental for bodily processes, yet it cannot be made in the body and has to be obtained from the diet. DHA can be synthesized from alpha-linolenic acid (ALA), an omega-3 fatty acid found in plant sources. However,  this conversion is poor in all mammals.

DHA can be supplemented directly from marine sources such as fish oil and microalgae.

Flax Oil2019-11-09T10:19:03-05:00

Flax OilFlax oil is a plant oil that is extracted from flaxseed and has the highest concentration of Omega-3 fatty acids of all of the plant oils. Because of its high Omega-3 concentration, palatable taste and wide availability, flax oil is one of the most common Omega-3 fatty acid and energy supplements in horse nutrition.

In addition to Omega-3 fatty acids, Omega-6 fatty acids are also found in flax oil. The combination of Omega-3 and Omega-6 is of particular interest in horse nutrition because of the positive effects they have on inflammation, immunity and cardiovascular health.

Horses are not able to produce Omega-3 and Omega-6 fatty acids themselves, so they must be consumed in the diet, and flax oil is a great choice. Horses may require the addition of fat to their diet to increase dietary calorie density and assist in fighting inflammation, but it can also be used to add a healthy gloss to the hair coat. This might require as little as 80-120 mL of oil per day, up to 500 mL. As with all dietary changes, the addition of supplemental fats in the form of plant oils should be done slowly to allow the horse’s gastrointestinal tract to acclimatize.

Soybean Oil2019-09-05T21:28:41-04:00

Soybean OilSoybean oil is a plant oil that is extracted from the seeds of the soybean and is used as a fatty acid supplement in equine nutrition.

The ratio of linoleic acid (omega-6) and alpha-linolenic acid (omega-3) fatty acids differ among fat sources, especially plant oils. Soybean oil contains a higher proportion of omega-6, with an omega-6:3 ratio of around 7:1. These fatty acid ratios are of particular interest to researchers because of their effect on inflammation and immunity and also because horses are not able to produce these fatty acids themselves, so they must be consumed in the diet.

Horses may require the addition of fat to their diet to increase dietary calorie density, but it can also be used to add a healthy gloss to the hair coat. This might require as little as 80-120 mL of oil per day, up to 500 mL. As with all dietary changes, the addition of supplemental fats in the form of plant oils should be done slowly to allow the horse’s gastrointestinal tract to acclimatize.

Vitamin E2020-05-31T07:09:42-04:00

Vitamin EVitamin E is the shared name for eight different fat-soluble, naturally-occurring compounds: a, b, g, and d-tocopherol and a, b, g, and d-tocotrienol. These compounds all have vitamin E activity and are comprised of a chromanol ring with differing phytyl side chains. The compound most commonly referred to as vitamin E is a-tocopherol and is widely considered to be the most biologically active form of all the vitamin E constituents.

The most natural form of alpha-tocopherol is d-alpha-tocopherol, and is only synthesized in plants so it must be obtained through the diet. Fresh, grass pasture contains the highest concentrations of d-alpha-tocopherol, however, a large number of horses do not have year-round access to grass pasture and their diets consist mostly of hay, so alpha-tocopherol is often added to most commercial feed formulations or top-dressed as a supplement.

Vitamin E functions as a powerful antioxidant, meaning it protects the body tissue from damage caused by free radicals.  Free radicals are produced during normal cellular metabolism and can harm cells, tissues, and organs if not kept in balance with proper antioxidant levels.

Other functions of Vitamin E:

  • Immune function – important for defense against viruses and bacteria
  • Formation of red blood cells
  • Helps widen blood vessels and keep blood from clotting inside them
  • Used in cellular communication, used to carry out many important functions.

Research confirms that the different forms of vitamin E available to be supplemented can have a significant impact on vitamin E levels in the blood. The most bioavailable forms of vitamin E should only be used in order to properly formulate balanced equine diets, to treat vitamin E deficiency and its associated conditions and aid in exercise recovery.

w-3 Oil energy supplement is designed as an energy and essential fatty acid supplement to support cardiovascular function, skin, joint health, and weight maintenance.

Directions for Use:

Administer orally top dressed on feed.

Product should be introduced gradually and increased as necessary. Total dietary fat should not exceed 8% for equine diets.


100 mL per day per 500 kg (1100 lb) of body weight

Weight Management:

200 mL per day per 500 kg (1100 lb) of body weight


Store inside away from heat, sparks and flame. Protect from freezing temperatures.


Do not use in animals with bleeding disorders, unless directed by a veterinarian.

Active Ingredients:
Per mL serving
Ingredients Per 100 mL
Proprietary Blend of Soybean, flax and DHA Oil 99 mL
DHA (minimum) 1500 mg
Vitamin E (d-alpha-tocopherol) 1000 mg

INGREDIENTS: Soybean oil, flax oil, heterotrophic algae, d-alpha-tocopherol (natural vitamin E) and flavour.


Net Volume: 5 L

Register & manufactured by: Mad Barn Inc., Petersburg, ON, Canada.

Disclaimer: These statements have not been evaluated by Health Canada or the FDA. This product is not intended to diagnose, treat, cure or prevent any disease.