The dog supplement market is a mess. Thousands of products, aggressive marketing, and very little clinical evidence behind most of them. If you are spending money on supplements for your senior dog, you deserve to know which ones actually work, at what dose, and which ones are a waste of money.
EPA and DHA from marine sources (fish oil, not flaxseed) have the strongest clinical evidence of any canine supplement. Studies published in the Journal of the American Veterinary Medical Association show that omega-3 supplementation at therapeutic doses reduces inflammatory markers by 30 to 40 percent, improves joint mobility, supports cognitive function, and may slow kidney disease progression.
The key is dose. Most commercial dog omega-3 products are dramatically underdosed. A 70-pound senior dog needs approximately 2,000 to 3,000 mg of combined EPA and DHA daily. That is 4 to 6 standard fish oil capsules, not the one capsule most products suggest. Nordic Naturals Omega-3 Pet and Grizzly Pollock Oil are two products that deliver therapeutic doses without requiring a handful of pills.
Glucosamine HCl (not glucosamine sulfate) combined with chondroitin sulfate has moderate clinical evidence for slowing cartilage degradation in dogs with osteoarthritis. The Dasuquin clinical trial showed 68 percent improvement in lameness scores over 120 days in large-breed dogs.
Important: glucosamine HCl has 15 to 20 percent higher bioavailability than glucosamine sulfate in clinical trials. Check the label. Nutramax Dasuquin Advanced and Cosequin DS Plus are the two products with the most clinical backing. Generic alternatives save money but often use the less bioavailable sulfate form.
Canine-specific probiotic strains (Enterococcus faecium, Bacillus coagulans) show promising results for digestive health, immune function, and even anxiety reduction in dogs. The key is using a veterinary-formulated product with verified colony counts, not a human probiotic. Purina FortiFlora and Visbiome Vet are two options with published canine studies.
Turmeric/curcumin supplements for dogs have very poor bioavailability in canine digestive systems. Most of the clinical evidence is from human or in-vitro studies. CBD oil for dogs lacks dosing standards and has inconsistent purity across products. Coconut oil provides calories but minimal health benefit at the doses typically given.
What your senior dog needs depends on their specific lab work, breed, weight, age, and health history. Cogua analyzes your dog's actual vet records and generates a personalized supplement protocol with exact brands, doses, and clinical reasoning. No guesswork.
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