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Dog Medication & Dosage Calculators

Thirty-eight free weight-based medication dosage calculators for dogs. Enter your dog's weight and get the correct dose range for the most commonly prescribed and over-the-counter dog medications — with clear guidance on when to contact your vet.

117Free Tools
Weight-BasedDosing
⚠️Always Verify With Vet

Every Calculator in This Category

Every calculator returns a dose range based on your dog's exact weight. Results include standard dosing intervals, maximum safe doses, and red flag warnings.

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4Cyte Dosage Calculator for Dogs

Weight-based 4Cyte Dosage Calculator for Dogs reference with veterinary safety guidance.

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Acepromazine Dosage Calculator for Dogs

Calculate the weight-based acepromazine dose for dogs with frequency, maximum dose, and key safety warnings.

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Activated Charcoal Dosage Calculator for Dogs

Weight-based Activated Charcoal Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Albon Sulfadimethoxine Dosage Calculator for Dogs

Weight-based Albon Sulfadimethoxine Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Allopurinol Dosage Calculator for Dogs

Weight-based Allopurinol Dosage Calculator for Dogs reference with veterinary safety guidance.

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Amitriptyline Dosage Calculator for Dogs

Weight-based Amitriptyline Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Amlodipine Dosage Calculator for Dogs

Weight-based Amlodipine Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Amoxicillin Clavulanate Clavamox Dosage Calculator for Dogs

Weight-based Amoxicillin Clavulanate Clavamox Dosage Calculator for Dogs reference with veterinary safety guidance.

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Amoxicillin Dosage Calculator for Dogs

Calculate the weight-based amoxicillin dose for your dog with frequency and safety guidance.

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Apoquel Dosage Calculator for Dogs

Calculate the weight-based apoquel dose for your dog with frequency and safety guidance.

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Aspirin Dosage Calculator for Dogs

Calculate the weight-based Aspirin Dosage Calculator for Dogs for dogs with safety guidance and veterinary disclaimers.

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Atenolol Dosage Calculator for Dogs

Calculate the weight-based atenolol dose for dogs with frequency and safety guidance.

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Ativan Lorazepam Dosage Calculator for Dogs

Calculate the weight-based Ativan Lorazepam Dosage Calculator for Dogs for dogs with safety guidance and veterinary disclaimers.

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Azathioprine Dosage Calculator for Dogs

Calculate the weight-based azathioprine dose for dogs with frequency and safety guidance.

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Benadryl Dosage Calculator for Dogs

Calculate the weight-based dose of diphenhydramine (Benadryl) for allergic reactions, itching, anxiety, or travel sickness in dogs. for dogs — with frequency, maximum dose, and safety guidance.

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BPC-157 Dosage Calculator for Dogs

Weight-based BPC-157 Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Butorphanol Dosage Calculator for Dogs

Calculate the weight-based butorphanol dose for dogs with frequency, maximum dose, and key safety warnings.

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Calcium Supplement Dosage Calculator for Dogs

Weight-based Calcium Supplement Dosage Calculator for Dogs reference with veterinary safety guidance.

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Carprofen Dosage Calculator for Dogs

Calculate the weight-based carprofen dose for your dog with frequency and safety guidance.

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CBD Dosage Calculator for Dogs

Calculate starting CBD oil doses for dogs based on weight — for anxiety, pain, and inflammation support.

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Cefdinir Cefpodoxime Dosage Calculator for Dogs

Weight-based Cefdinir Cefpodoxime Dosage Calculator for Dogs reference with veterinary safety guidance.

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Cephalexin Dosage Calculator for Dogs

Calculate the weight-based cephalexin dose for your dog with frequency and safety guidance.

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Cerenia (Maropitant) Dosage Calculator for Dogs

Calculate the weight-based cerenia dose for your dog with frequency and safety guidance.

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Chlorpheniramine Dosage Calculator for Dogs

Weight-based Chlorpheniramine Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Claritin Loratadine Dosage Calculator for Dogs

Calculate the weight-based Claritin Loratadine Dosage Calculator for Dogs for dogs with safety guidance and veterinary disclaimers.

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Clindamycin Dosage Calculator for Dogs

Calculate the weight-based clindamycin dose for your dog with frequency and safety guidance.

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Clonazepam Klonopin Dosage Calculator for Dogs

Calculate the weight-based Clonazepam Klonopin Dosage Calculator for Dogs for dogs with safety guidance and veterinary disclaimers.

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Codeine Dosage Calculator for Dogs

Calculate the weight-based codeine dose for dogs with frequency, maximum dose, and key safety warnings.

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Corid Amprolium Dosage Calculator for Dogs

Weight-based Corid Amprolium Dosage Calculator for Dogs reference with veterinary safety guidance.

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Cyclosporine Dosage Calculator for Dogs

Calculate the weight-based cyclosporine dose for dogs with frequency and safety guidance.

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Dewormer Dosage Calculator for Dogs

Weight-based Dewormer Dosage Calculator for Dogs reference with veterinary safety guidance.

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Dexamethasone Dosage Calculator for Dogs

Calculate the weight-based dexamethasone dose for dogs with frequency, maximum dose, and key safety warnings.

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Dexmedetomidine Dosage Calculator for Dogs

Weight-based Dexmedetomidine Dosage Calculator for Dogs reference with veterinary safety guidance.

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Diazepam Valium Dosage Calculator for Dogs

Weight-based Diazepam Valium Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Doxycycline Dosage Calculator for Dogs

Calculate the weight-based doxycycline dose for your dog with frequency and safety guidance.

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Dramamine Dimenhydrinate Dosage Calculator for Dogs

Calculate the weight-based Dramamine Dimenhydrinate Dosage Calculator for Dogs for dogs with safety guidance and veterinary disclaimers.

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Eggshell Powder Dosage Calculator for Dogs

Weight-based Eggshell Powder Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Enalapril Dosage Calculator for Dogs

Calculate the weight-based enalapril dose for dogs with frequency and safety guidance.

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Enrofloxacin Dosage Calculator for Dogs

Calculate the weight-based enrofloxacin dose for dogs with frequency and safety guidance.

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Euthanasia Pentobarbital Reference for Dogs

Weight-based Euthanasia Pentobarbital Reference for Dogs reference with veterinary safety guidance.

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Famotidine Dosage Calculator for Dogs

Calculate the weight-based famotidine dose for dogs with frequency, maximum dose, and key safety warnings.

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Fish Oil Dosage Calculator for Dogs

Calculate the weight-based Fish Oil Dosage Calculator for Dogs for dogs with safety guidance and veterinary disclaimers.

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Fluconazole Dosage Calculator for Dogs

Calculate the weight-based Fluconazole Dosage Calculator for Dogs for dogs with safety guidance and veterinary disclaimers.

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Fluoxetine Prozac Dosage Calculator for Dogs

Weight-based Fluoxetine Prozac Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Furosemide Dosage Calculator for Dogs

Calculate the weight-based furosemide dose for dogs with frequency and safety guidance.

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Gabapentin Dosage Calculator for Dogs

Calculate the weight-based dose of gabapentin for nerve pain, chronic pain management, and as an adjunct for seizure control in dogs. for dogs — with frequency, maximum dose, and safety guidance.

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Gabapentin Trazodone Combined Dosage Calculator

Weight-based Gabapentin Trazodone Combined Dosage Calculator reference with veterinary safety guidance.

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Glucosamine Chondroitin Dosage Calculator for Dogs

Weight-based Glucosamine Chondroitin Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Green Lipped Mussel Dosage Calculator for Dogs

Weight-based Green Lipped Mussel Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Honey Dosage Calculator for Dogs

Weight-based Honey Dosage Calculator for Dogs reference with veterinary safety guidance.

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Hydrocodone Dosage Calculator for Dogs

Calculate the weight-based hydrocodone dose for dogs with frequency, maximum dose, and key safety warnings.

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Hydrogen Peroxide Dosage Calculator for Dogs

Calculate the weight-based Hydrogen Peroxide Dosage Calculator for Dogs for dogs with safety guidance and veterinary disclaimers.

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Hydroxyzine Dosage Calculator for Dogs

Calculate the weight-based hydroxyzine dose for dogs with frequency, maximum dose, and key safety warnings.

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Imodium Loperamide Dosage Calculator for Dogs

Calculate the weight-based Imodium Loperamide Dosage Calculator for Dogs for dogs with safety guidance and veterinary disclaimers.

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Insulin Dose Calculator for Dogs

Calculate starting insulin doses for diabetic dogs and understand how to monitor and adjust based on glucose response.

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Ivermectin Dosage Calculator for Dogs

Calculate the weight-based Ivermectin Dosage Calculator for Dogs for dogs with safety guidance and veterinary disclaimers.

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Ketamine Dosage Calculator for Dogs

Weight-based Ketamine Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Ketoconazole Dosage Calculator for Dogs

Weight-based Ketoconazole Dosage Calculator for Dogs reference with veterinary safety guidance.

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Lactulose Dosage Calculator for Dogs

Weight-based Lactulose Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Levetiracetam Keppra Dosage Calculator for Dogs

Calculate the weight-based Levetiracetam Keppra Dosage Calculator for Dogs for dogs with safety guidance and veterinary disclaimers.

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Levothyroxine Dosage Calculator for Dogs

Calculate the weight-based levothyroxine dose for dogs with frequency and safety guidance.

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Lidocaine CRI Dosage Calculator for Dogs

Weight-based Lidocaine CRI Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Lysine Dosage Calculator for Dogs

Weight-based Lysine Dosage Calculator for Dogs reference with veterinary safety guidance.

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Magnesium Dosage Calculator for Dogs

Weight-based Magnesium Dosage Calculator for Dogs reference with veterinary safety guidance.

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Mannitol Dosage Calculator for Dogs

Weight-based Mannitol Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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MCT Oil Dosage Calculator for Dogs

Weight-based MCT Oil Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Melatonin Dosage Calculator for Dogs

Calculate melatonin doses for dogs — for sleep disorders, anxiety, seasonal alopecia, and noise phobia.

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Meloxicam Dosage Calculator for Dogs

Calculate the weight-based dose of meloxicam (Metacam) for pain and inflammation management — arthritis, post-surgical pain, and acute injuries. for dogs — with frequency, maximum dose, and safety guidance.

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Methimazole Dosage Calculator for Dogs

Calculate the weight-based methimazole dose for dogs with frequency and safety guidance.

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Methocarbamol Dosage Calculator for Dogs

Calculate the weight-based Methocarbamol Dosage Calculator for Dogs for dogs with safety guidance and veterinary disclaimers.

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Metronidazole Dosage Calculator for Dogs

Calculate the weight-based metronidazole dose for your dog with frequency and safety guidance.

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Midazolam Dosage Calculator for Dogs

Weight-based Midazolam Dosage Calculator for Dogs reference with veterinary safety guidance.

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Milk Thistle Dosage Calculator for Dogs

Weight-based Milk Thistle Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Miralax Dosage Calculator for Dogs

Weight-based Miralax Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Naproxen Dosage Calculator for Dogs

Weight-based Naproxen Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Niacinamide Dosage Calculator for Dogs

Weight-based Niacinamide Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Omega 3 Fish Oil Dosage Calculator for Dogs

Weight-based Omega 3 Fish Oil Dosage Calculator for Dogs reference with veterinary safety guidance.

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Omeprazole Dosage Calculator for Dogs

Calculate the weight-based omeprazole dose for dogs with frequency, maximum dose, and key safety warnings.

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Ondansetron Zofran Dosage Calculator for Dogs

Calculate the weight-based Ondansetron Zofran Dosage Calculator for Dogs for dogs with safety guidance and veterinary disclaimers.

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Oxytocin Dosage Calculator for Dogs

Weight-based Oxytocin Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Panacur Fenbendazole Dosage Calculator for Dogs

Calculate the weight-based Panacur Fenbendazole Dosage Calculator for Dogs for dogs with safety guidance and veterinary disclaimers.

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Penicillin G Dosage Calculator for Dogs

Weight-based Penicillin G Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Pepto Bismol Dosage Calculator for Dogs

Calculate the weight-based Pepto Bismol Dosage Calculator for Dogs for dogs with safety guidance and veterinary disclaimers.

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Phenobarbital Dosage Calculator for Dogs

Calculate the weight-based phenobarbital dose for dogs with frequency, maximum dose, and key safety warnings.

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Pimobendan Dosage Calculator for Dogs

Calculate the weight-based pimobendan dose for dogs with frequency and safety guidance.

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Potassium Bromide Dosage Calculator for Dogs

Calculate the weight-based kbr dose for dogs with frequency, maximum dose, and key safety warnings.

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Praziquantel Dosage Calculator for Dogs

Weight-based Praziquantel Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Prednisone Dosage Calculator for Dogs

Calculate weight-based prednisone doses for dogs — anti-inflammatory, immunosuppressive, and Addison's disease management.

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Pregabalin Dosage Calculator for Dogs

Weight-based Pregabalin Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Propofol Dosage Calculator for Dogs

Weight-based Propofol Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Psyllium Husk Dosage Calculator for Dogs

Weight-based Psyllium Husk Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Pyrantel Pamoate Dosage Calculator for Dogs

Calculate the weight-based Pyrantel Pamoate Dosage Calculator for Dogs for dogs with safety guidance and veterinary disclaimers.

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Quercetin Dosage Calculator for Dogs

Weight-based Quercetin Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Rimadyl (Carprofen) Dosage Calculator for Dogs

Calculate the weight-based rimadyl dose for your dog with frequency and safety guidance.

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Robitussin Guaifenesin Dosage Calculator for Dogs

Weight-based Robitussin Guaifenesin Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Rosehip Vital Dosage Calculator for Dogs

Weight-based Rosehip Vital Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Sertraline Zoloft Dosage Calculator for Dogs

Weight-based Sertraline Zoloft Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Sildenafil Dosage Calculator for Dogs

Calculate the weight-based Sildenafil Dosage Calculator for Dogs for dogs with safety guidance and veterinary disclaimers.

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Simethicone Dosage Calculator for Dogs

Weight-based Simethicone Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Spironolactone Dosage Calculator for Dogs

Calculate the weight-based spironolactone dose for dogs with frequency and safety guidance.

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Spirulina Dosage Calculator for Dogs

Weight-based Spirulina Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Sucralfate Dosage Calculator for Dogs

Calculate the weight-based Sucralfate Dosage Calculator for Dogs for dogs with safety guidance and veterinary disclaimers.

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Tamsulosin Dosage Calculator for Dogs

Weight-based Tamsulosin Dosage Calculator for Dogs reference with veterinary safety guidance.

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Taurine Dosage Calculator for Dogs

Weight-based Taurine Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Theophylline Dosage Calculator for Dogs

Weight-based Theophylline Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Toltrazuril Dosage Calculator for Dogs

Weight-based Toltrazuril Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Tramadol Dosage Calculator for Dogs

Calculate the weight-based dose of tramadol for moderate to severe pain management in dogs. Note: bioavailability in dogs is lower than in humans. for dogs — with frequency, maximum dose, and safety guidance.

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Trazodone Dosage Calculator for Dogs

Calculate the weight-based trazodone dose for your dog with frequency and safety guidance.

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Trimethoprim Bactrim Dosage Calculator for Dogs

Weight-based Trimethoprim Bactrim Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Turmeric Dosage Calculator for Dogs

Weight-based Turmeric Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Tylan Tylosin Dosage Calculator for Dogs

Weight-based Tylan Tylosin Dosage Calculator for Dogs reference with veterinary safety guidance.

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Vincristine Dosage Calculator for Dogs

Weight-based Vincristine Dosage Calculator for Dogs reference with veterinary safety guidance.

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Vitamin D3 Supplement Dosage Calculator for Dogs

Weight-based Vitamin D3 Supplement Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Vitamin K Dosage Calculator for Dogs

Weight-based Vitamin K Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Xanax Alprazolam Dosage Calculator for Dogs

Calculate the weight-based Xanax Alprazolam Dosage Calculator for Dogs for dogs with safety guidance and veterinary disclaimers.

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Zinc Dosage Calculator for Dogs

Weight-based Zinc Dosage Calculator for Dogs reference with safety guidance and veterinary disclaimers.

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Zyrtec Cetirizine Dosage Calculator for Dogs

Calculate the weight-based Zyrtec Cetirizine Dosage Calculator for Dogs for dogs with safety guidance and veterinary disclaimers.

How Weight-Based Dog Dosing Works

Unlike human medications where doses are often fixed per tablet, most veterinary medications are dosed by milligrams per kilogram of bodyweight (mg/kg). A 5kg Chihuahua and a 40kg Labrador need very different amounts of the same drug. Our calculators apply the published therapeutic dose range to your dog's exact weight and return the correct dose in milligrams.

We also flag important warnings — MDR1 gene sensitivity in Collies for ivermectin, aspirin contraindications with other NSAIDs, insulin dosing that requires glucose monitoring. These calculators are a reference tool, not a prescription. Always confirm with your vet before giving any medication.

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mg/kg — The Veterinary Standard

Every dose is calculated from your dog's actual weight, not a generic estimate.

How to Use These Calculators

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Find Your Medication

Use the list above or search — we cover 38 of the most common dog medications.

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Enter Your Dog's Weight

Use your dog's most recent accurate weight in kilograms or pounds.

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Review the Dose Range

You'll get a minimum and maximum dose in mg, plus guidance on frequency and duration.

4

Confirm With Your Vet

Use this as a reference and starting point — your vet confirms the right dose for your dog's specific condition.

Why Dog Owners Trust Our Calculators

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Exact Weight-Based Dosing

Not a generic guide — every result is calculated from your dog's actual weight.

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Safety Warnings Included

Each calculator includes breed-specific warnings, contraindications, and overdose signs.

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38 Medications Covered

From common antibiotics to anxiety medications to insulin — the most comprehensive free dog dosage resource available.

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Free Reference Tool

Available 24/7 with no account, no subscription, no cost.

Frequently Asked Questions

Can I give my dog human medication?

Some human medications are safe for dogs at the right dose — Benadryl and aspirin are examples. Many others are severely toxic. Always check with your vet first.

What does mg/kg mean in dog dosing?

It means milligrams of medication per kilogram of the dog's bodyweight. It's how vets standardise doses across different sized animals.

How do I know if I've given too much?

Signs of overdose vary by medication. Each of our calculator pages lists the specific overdose signs for that drug. If in doubt, call your vet immediately.

Are these calculators a replacement for a vet prescription?

No. They are a reference tool to help you understand what your vet has prescribed or to have an informed conversation. Never medicate your dog without veterinary guidance.

Find the Right Dose for Your Dog

38 free dosage calculators. Weight-based, accurate, and available right now.

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