What actually works for aging dogs

Degenerative joint disease, the most common source of chronic pain in older dogs.

• Strong evidence nsaid

  Veterinary NSAIDs (carprofen, meloxicam, firocoxib, robenacoxib)

  Rimadyl, Metacam, Previcox, Onsior

  The best-evidenced treatment for arthritis pain in dogs, and the benchmark every newer drug is measured against. The real limit is not whether they work but whether a given older dog's kidneys, liver, and gut can tolerate them long-term.

• Moderate evidence biologic

  Bedinvetmab (anti-NGF monoclonal antibody)

  Librela, Beransa

  A monthly injection that blocks a pain-signaling protein. It genuinely relieves arthritis pain in a substantial minority of dogs and avoids the gut and kidney risks of NSAIDs, but it is not reversible once injected and its long-term joint safety is actively debated.

• Moderate evidence analgesic

  Grapiprant (EP4 prostaglandin receptor antagonist)

  Galliprant

  A targeted pain drug that blocks one specific inflammatory receptor rather than shutting down prostaglandin production broadly. Often chosen for older dogs where the broader gastrointestinal and kidney effects of a classic NSAID are the main worry.

• Moderate evidence diet

  Omega-3 fatty acids (EPA/DHA-enriched diets and fish oil)

  One of the very few supplements with real randomized evidence behind it. Expect a modest improvement in mobility and, importantly, the possibility of getting the same pain control on a lower NSAID dose. It is not a replacement for pain medication.

• Moderate evidence lifestyle

  Weight optimization (calorie-restricted weight loss)

  The single most underused treatment for arthritis in older dogs. Losing roughly 6-9% of body weight measurably reduces lameness on its own, before any drug is added. And unlike every drug here, the side effects are all good ones.

• Evidence of little or no benefit supplement

  Glucosamine and chondroitin sulfate

  Cosequin, Dasuquin, and many others

  The most commonly recommended joint supplement for dogs, and the one with the clearest evidence that it does not meaningfully reduce arthritis pain. Money spent here is better spent on weight loss, omega-3s, or proven pain control.

Age-related cognitive decline, the dog analogue of dementia.

• Moderate evidence diet

  Medium-chain triglyceride (MCT) enriched diet

  Purina Pro Plan Bright Mind, Hill's b/d

  The best-evidenced intervention for canine dementia, and one of the few places where a diet change has randomized trial support. Medium-chain triglycerides give the aging brain an alternative fuel source when its glucose metabolism falters.

• Limited evidence neuro

  Selegiline (L-deprenyl)

  Anipryl

  The only approved drug for canine dementia. Worth trying, particularly for disrupted sleep and lost house-training, but set expectations modestly and pair it with a diet change and enrichment rather than relying on it alone.

Interventions aimed at aging itself rather than a single disease.

• Untested in dogs investigational

  LOY-002 (senior dog lifespan extension drug)

  A daily pill in development that aims to extend healthy lifespan in senior dogs, targeting about one additional year. It is closer to market than anything comparable, but no published trial has yet shown it does this, and the approval pathway it is on does not require that proof up front.

• Untested in dogs investigational

  Rapamycin (sirolimus) for healthy aging

  Rapamune

  The most credible candidate for a genuine anti-aging drug in dogs, currently being tested in a real randomized trial that has not yet reported results. There is no honest basis today for giving it to a healthy dog outside that trial.

Weakness, sarcopenia, and reduced activity independent of joint pain.

• Strong evidence nsaid

  Veterinary NSAIDs (carprofen, meloxicam, firocoxib, robenacoxib)

  Rimadyl, Metacam, Previcox, Onsior

  The best-evidenced treatment for arthritis pain in dogs, and the benchmark every newer drug is measured against. The real limit is not whether they work but whether a given older dog's kidneys, liver, and gut can tolerate them long-term.

• Moderate evidence diet

  Omega-3 fatty acids (EPA/DHA-enriched diets and fish oil)

  One of the very few supplements with real randomized evidence behind it. Expect a modest improvement in mobility and, importantly, the possibility of getting the same pain control on a lower NSAID dose. It is not a replacement for pain medication.

• Moderate evidence lifestyle

  Weight optimization (calorie-restricted weight loss)

  The single most underused treatment for arthritis in older dogs. Losing roughly 6-9% of body weight measurably reduces lameness on its own, before any drug is added. And unlike every drug here, the side effects are all good ones.

Progressive loss of kidney function, one of the most common serious diseases of older dogs.

• Moderate evidence diet

  Therapeutic renal diet

  Hill's k/d, Royal Canin Renal, Purina NF

  The best-evidenced treatment for canine kidney disease, and one of the very few interventions anywhere in geriatric veterinary medicine shown in a randomized trial to extend life rather than just relieve symptoms. The hard part is not whether it works, it is getting a dog with a poor appetite to eat it.