Melatonin Dosage Calculator for Dogs
Calculate melatonin doses for dogs — for sleep disorders, anxiety, seasonal alopecia, and noise phobia.
What Is the Melatonin Dosage Calculator for Dogs?
Calculate melatonin doses for dogs — for sleep disorders, anxiety, seasonal alopecia, and noise phobia.
Melatonin is generally considered safe for dogs and is used for anxiety, sleep support, and seasonal flank alopecia. This calculator gives the standard weight-based dose range.
Every result is based on published veterinary research and breed-size-specific growth data — not generic averages. This tool is completely free, works instantly in your browser, and requires no account or sign-up.
How to Use This Calculator
Fill in the required fields above — typically your dog's weight, age, or breed size. Every field has a clear label and hint.
Press the calculate button to get your instant result. No page reload, no account needed, no waiting.
Your result appears immediately below the calculator. It includes the primary answer plus additional context where relevant.
Share, print, or save your result. Always discuss health-related results with your veterinarian before making decisions.
How It Works
Melatonin is a naturally occurring hormone that regulates sleep-wake cycles. In dogs, it is used for anxiety (particularly noise phobia and separation anxiety), sleep disorders, and seasonal flank alopecia where it helps regulate hair follicle cycling. The standard dose is 0.05-0.1mg/kg, with many vets using fixed doses of 1mg for small dogs, 3mg for medium dogs, and 6mg for large dogs.
Veterinary Research
Every formula is derived from peer-reviewed veterinary studies and clinical guidelines, not guesswork or generic rules.
Instant Results
No page reload, no waiting, no account needed. Enter your details and your result appears immediately.
100% Private
All calculations happen in your browser. Nothing you enter is ever stored on our servers or shared with anyone.
Always Free
Every calculator on Doggy Calculators is and will always be completely free to use — no premium tier, no catch.
Frequently Asked Questions
Sources & References
This calculator's formulas are based on the following peer-reviewed and authoritative veterinary sources:
- Plumb's Veterinary Drug Handbook (9th Edition) — Primary reference for all dosage ranges and frequency guidance
- Merck Veterinary Manual — Drug pharmacology, indications, and contraindications
- WSAVA Global Nutrition Guidelines — Weight-based dosing principles and patient monitoring
- VCA Animal Hospitals Drug Library — Client-facing drug information and safety guidance
⚠️ These calculators are reference tools only. Always consult a licensed veterinarian before administering medication or making medical decisions.