CBD Dosage Calculator for Pets
Calculate the right CBD dose for your dog by weight and condition. Covers anxiety, pain, and seizures with a step-up dosing guide and product tips.
Use CalculatorChoose dog or cat first, then enter the details that match your pet's species, weight, routine, and current situation.
The pet supplement market has grown to a multi-billion dollar industry, but the dosing information on product labels is often vague, generic, or based on body weight ranges too broad to be practically useful. The Dog Supplement Dosage Calculator provides weight-based dosing guidance for the most commonly used and evidence-supported canine supplements, helping you give the right dose rather than guessing from imprecise label instructions.
Most Evidence-Supported Dog Supplements
Use the table below to compare Most Evidence-Supported Dog Supplements.
| Supplement | Primary Use | Evidence Level | Notes |
|---|---|---|---|
| Omega-3 (EPA+DHA) | Anti-inflammation, joint, cardiac, skin/coat health | Strong - multiple RCTs in dogs | Fish oil preferred; algal oil for fish-free option |
| Glucosamine HCl | Joint cartilage support, osteoarthritis | Moderate | Works best with chondroitin; allow 4-8 weeks to assess |
| Chondroitin sulfate | Cartilage support, reduces joint inflammation | Moderate | Synergistic with glucosamine |
| Probiotics | Digestive health, immune support, antibiotic recovery | Moderate | Species-specific strains most effective; Lactobacillus, Bifidobacterium |
| SAMe (S-adenosyl methionine) | Liver support, cognitive function | Moderate | Also used as adjunct for CDS (dog dementia) |
| Milk thistle (silymarin) | Liver protection, antioxidant | Moderate | Useful for dogs on long-term medications stressing the liver |
| Coenzyme Q10 | Cardiac support, antioxidant | Low-moderate | Often used in dilated cardiomyopathy management |
| Melatonin | Sleep cycle, noise anxiety, alopecia X | Low-moderate | Safe at recommended doses; useful for noise phobia |
| Digestive enzymes | Exocrine pancreatic insufficiency (EPI) | High for EPI; Low for general use | Prescription pancreatic extract (Viokase) standard for EPI |
Dosing Chart by Weight
Use the table below to compare Dosing Chart by Weight.
| Dog Weight | Omega-3 EPA+DHA | Glucosamine | Chondroitin | Probiotic CFU | SAMe |
|---|---|---|---|---|---|
| 5-10 lbs | 250-500 mg/day | 250 mg/day | 200 mg/day | 1-5 billion CFU | 90 mg/day |
| 11-25 lbs | 500-1000 mg/day | 500 mg/day | 400 mg/day | 1-5 billion CFU | 90-200 mg/day |
| 26-50 lbs | 1000-2000 mg/day | 1000 mg/day | 800 mg/day | 5-10 billion CFU | 200-400 mg/day |
| 51-75 lbs | 2000-3000 mg/day | 1500 mg/day | 1200 mg/day | 5-10 billion CFU | 400 mg/day |
| 76-100 lbs | 3000-4000 mg/day | 2000 mg/day | 1600 mg/day | 10-20 billion CFU | 400-800 mg/day |
| Over 100 lbs | 4000-5000 mg/day | 2000+ mg/day | 1600+ mg/day | 10-20 billion CFU | 800 mg/day |
Fish Oil Supplement Selection Guide
Use the table below to compare Fish Oil Supplement Selection Guide.
| Product Type | EPA+DHA per serving | Recommended For | Avoid If |
|---|---|---|---|
| Standard fish oil softgels (1000mg) | ~300mg EPA+DHA | Small dogs; budget option | Dog needs high dose - requires many capsules |
| Concentrated fish oil (1000mg) | ~650-700mg EPA+DHA | Medium dogs; fewer capsules needed | N/A |
| Liquid fish oil (Nordic Naturals, etc.) | Variable by product | Large dogs; easier to dose by mL | Fish allergy (use algal oil instead) |
| Algal omega-3 oil | DHA primarily; EPA varies | Fish allergy; vegan households | N/A - good option for most dogs |
| Krill oil | ~100-150mg EPA+DHA per 500mg capsule | Small supplement dose; high bioavailability claimed | Dogs needing high doses - expensive per mg EPA+DHA |
Frequently Asked Questions
Can I over-supplement my dog?
Yes. Fat-soluble vitamins (A, D, E, K) accumulate in the body and can cause toxicity with chronic over-supplementation. Omega-3s at very high doses can impair platelet function and prolong bleeding. Calcium supplementation in large breed puppies causes serious developmental bone disease. Follow evidence-based dosing and avoid 'more is better' thinking with supplements.
Do supplements interact with medications?
Yes. Omega-3s can potentiate anticoagulant medications. SAMe may interact with some antidepressants. Milk thistle affects cytochrome P450 enzymes that metabolize many drugs. Always tell your veterinarian about all supplements your dog is taking, especially before surgery or starting new medications.
Note: Supplement amounts can vary by product strength, pet size, diet, and health history.
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