If your dog constantly scratches, loses fur, or seems tired for no reason, it might be missing something essential—vitamin E.
Dogs can suffer from vitamin deficiencies just like humans. But they can’t fix it themselves—they rely on you to spot the signs and give them what they need.
Many pet parents don’t know that vitamin E isn’t just a "nice-to-have" supplement. It’s a powerful antioxidant that is critical to your dog’s immune system, skin health, and even muscle strength. But dosage matters. Too little won’t help—and too much can cause harm.
Let’s break down what vitamin E does for your dog, how much they need, and what to watch for.
Understanding Vitamin E Dosage for Dogs
How much is enough?
According to the Association of American Feed Control Officials (AAFCO), adult dogs need about 50 IU of vitamin E per kilogram of food. However, this amount may not be enough for dogs with specific health issues, such as joint problems or itchy skin.
Rough guideline based on weight:
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Small dogs (~10 lbs): 225 IU per day
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Large dogs (~50 lbs): 1,150 IU per day
These numbers are general starting points. It’s best to talk to your vet for a more tailored dose—especially if your dog is on a special diet or dealing with health conditions.
Can you give too much vitamin E?
Overdose is rare, but it can happen, especially with high-dose supplements. Watch for signs like:
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Vomiting or diarrhea
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Loss of appetite or energy
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Bleeding or bruising easily (vitamin E can interfere with vitamin K and clotting)
Long-term overuse may also affect how your dog absorbs other important vitamins like A, D, and K. Always stay within vet-approved limits.
How to Know if Your Dog Needs More Vitamin E
Factors that increase vitamin E needs:
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Age: Older dogs may need more antioxidant support
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Health: Dogs with skin allergies, joint issues, or immune challenges often benefit from extra vitamin E
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Diet: Dogs eating high-fat diets or homemade meals may require more to metabolize those fats properly
If your dog has recurring skin problems, sheds excessively, or seems run down, talk to your vet about possible deficiencies.
Starting out safely
Begin with the lower end of the dosage range and adjust as needed:
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A 10-pound dog: Start around 225 IU daily
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Increase slowly with vet guidance if necessary
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Monitor your dog’s response over a few weeks
Every dog is different. What works for one might be too much (or too little) for another.
Key Benefits of Vitamin E for Dogs
Healthier skin and shinier coat
Vitamin E helps moisturize and protect your dog’s skin, reducing dryness, flaking, and itchiness. It also strengthens hair follicles, promoting a thicker, glossier coat.
Dogs with skin conditions like dermatitis often see improvement with vitamin E supplementation. In one case, a Golden Retriever with hair loss and itchy skin showed noticeable results within weeks.
More insights on this topic can be found in Pet Wellness Direct’s article.
Relief for itchy skin
Vitamin E reduces inflammation and helps restore the skin’s moisture barrier. It can be given internally or applied directly to itchy patches—though always check with your vet before topical use.
According to Pet Wellness Direct, "Vitamin E can alleviate discomfort from dry and itchy skin by moisturizing the skin and reducing inflammation."
Immune system support
As an antioxidant, vitamin E protects cells from damage caused by free radicals. This is especially important for senior dogs or those with chronic illness.
A study from the University of Lincoln found improved immune cell function in dogs whose diets included adequate vitamin E. This kind of support helps your dog fight off illness and maintain long-term health.
Recognizing Vitamin E Toxicity in Dogs
Too much of a good thing can be a problem.
Symptoms to watch for:
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Vomiting and diarrhea
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Lethargy or weakness
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Loss of appetite
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Bleeding (due to impaired clotting)
If you notice these signs, stop supplements immediately and consult your vet. Toxicity is rare but should be treated promptly.
How to Prevent Overdosing
Here’s how to safely include vitamin E in your dog’s routine:
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Feed a complete, balanced commercial diet (most meet basic vitamin E needs)
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Don’t add supplements unless your vet suggests it
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Avoid mega-doses over 1,000 IU/kg of food
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If feeding a homemade diet, carefully track vitamin E levels and adjust recipes as needed
Natural Sources of Vitamin E for Dogs
Vitamin E isn’t just in supplements—it’s in a variety of foods you might already have at home.
Animal-based sources:
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Beef liver (1.2 mg per 200g)
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Salmon (2 mg per half fillet)
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Eggs (commonly found in dog food)
Plant-based options:
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Wheat germ oil (20 mg per tablespoon)
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Sunflower and safflower oils
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Spinach, broccoli, and mangoes
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Almonds and other nuts (in moderation and dog-safe forms)
These foods offer more than just vitamin E—they also contain fiber, healthy fats, and additional micronutrients.
To learn more, visit trusted sources like Dogster or PetMD for updated ingredient lists and nutrition info.
Example products with vitamin E:
Best Ways to Give Vitamin E to Dogs
Vitamin E comes in a few different formats, so you can choose what works best for your dog’s routine.
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Oil: Easy to mix into food or apply directly to skin, smell may be an issue (for both human and dog)
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Capsules: Can be hidden in treats or meals, however some dogs have a hard time swallowing
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Powder: Simple to sprinkle over kibble for consistent dosing
Choose the method that suits your dog’s eating habits and preferences. Always read labels and follow dosage instructions carefully.
Symptoms of Vitamin E Deficiency
Low vitamin E levels can cause serious issues, including:
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Muscle weakness or tremors
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Vision problems (even blindness)
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Weight loss
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Poor fertility
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Neurological issues
In extreme cases, dogs can develop “brown bowel syndrome,” a condition where the intestinal lining breaks down and bleeds. Retinopathy is also possible, especially in dogs fed low-vitamin diets for extended periods.
Learn more from the National Animal Supplement Council (NASC).
Final Thoughts
Vitamin E plays a critical role in your dog’s health—from fighting inflammation and boosting the immune system to improving skin and coat condition.
Remember that vitamin E is just one piece of your dog's overall health puzzle. Combined with a balanced diet, regular exercise, and routine checkups, it helps your furry friend live their best life. Trust your observations and your vet's guidance, adjusting as needed based on your dog's changing needs throughout their life stages.
Your dedication to understanding vitamin E for dogs shows how much you care—and your four-legged companion will thank you with years of healthy, happy companionship.
