Free Gabapentin Dosage Calculator for Dogs
Gabapentin Dosage Calculator for Dogs
Calculate Dosage
Dosage Guidelines
General range: 5-30 mg/kg per dose, up to 3 times daily. Adjust based on condition (pain, seizures, anxiety). Start low and titrate under vet supervision.
Dosage Table (kg)
Weight (kg) | Low (5 mg/kg) | Medium (15 mg/kg) | High (30 mg/kg) |
---|---|---|---|
5 | 25 mg | 75 mg | 150 mg |
10 | 50 mg | 150 mg | 300 mg |
20 | 100 mg | 300 mg | 600 mg |
30 | 150 mg | 450 mg | 900 mg |
40 | 200 mg | 600 mg | 1200 mg |
Dosage Table (lb)
Weight (lb) | Low (~2.3 mg/lb) | Medium (~6.8 mg/lb) | High (~13.6 mg/lb) |
---|---|---|---|
11 | 25 mg | 75 mg | 150 mg |
22 | 50 mg | 150 mg | 300 mg |
44 | 100 mg | 300 mg | 600 mg |
66 | 150 mg | 450 mg | 900 mg |
88 | 200 mg | 600 mg | 1200 mg |
Side Effects & Precautions
- Sedation, ataxia (wobbliness), GI upset.
- Use caution in dogs with kidney/liver issues.
- Avoid human formulations with xylitol.
- Taper off long-term use gradually.

Table of Contents
Gabapentin Dosage Calculator for Dogs
Important Disclaimer: This information is for educational purposes only and is based on general veterinary guidelines from reliable sources. Gabapentin is a prescription medication used off-label in dogs, and dosages must be determined by a licensed veterinarian based on your dog’s specific health condition, age, kidney/liver function, and other medications. Do not use this as a substitute for professional veterinary advice. Incorrect dosing can lead to side effects or ineffective treatment. Always consult your vet before starting or adjusting any medication.
What is Gabapentin and How is it Used in Dogs?
Gabapentin is an anticonvulsant and analgesic medication originally developed for humans to treat epilepsy and nerve pain. In veterinary medicine, it’s commonly prescribed off-label for dogs to manage:
- Chronic or Neuropathic Pain: Such as arthritis, intervertebral disk disease (IVDD), or post-surgical pain. It helps reduce “wind-up” pain (heightened sensitivity) and is often combined with NSAIDs or opioids.
- Seizures: As an add-on therapy for refractory (hard-to-control) epilepsy, alongside drugs like phenobarbital or levetiracetam.
- Anxiety: For situational stress (e.g., thunderstorms, vet visits, fireworks) or chronic behavioral anxiety. It promotes relaxation without full sedation in many cases.
It works by calming overactive nerves in the brain and spinal cord, reducing excitatory signals. Effects typically start within 1-2 hours, but full benefits for chronic conditions may take days to weeks.
Gabapentin is available as capsules (100 mg, 300 mg, 400 mg), tablets, or oral liquid (250 mg/5 mL). Avoid human liquid formulations containing xylitol, as it’s toxic to dogs—opt for vet-compounded versions if needed.
General Dosage Guidelines
The standard dosage range for dogs is 5-30 mg/kg of body weight, administered up to 3 times daily (every 8-12 hours). However, exact dosing varies by condition:
- Pain Management: Start at 5-15 mg/kg every 12 hours; titrate up to 40 mg/kg every 8-12 hours if needed.
- Seizures: 10-20 mg/kg every 8 hours; higher doses (up to 30-60 mg/kg) may be required in some cases.
- Anxiety (Short-Term): 30-60 mg/kg, given 1-2 hours before the event (single dose or as needed).
- Anxiety (Chronic): 5-30 mg/kg up to 3 times daily, starting low and increasing gradually (every 7 days).
Doses are weight-based (in kg or lb). Frequency depends on the condition—shorter intervals for acute needs. Start low to minimize sedation and titrate up under vet supervision. Do not exceed 30 mg/kg per dose without guidance, as higher doses increase side effect risks.
How to Calculate Dosage – Gabapentin Dosage Calculator for Dogs
Formula: Total Dose per Administration = Dog’s Weight (kg) × Desired Rate (mg/kg)
- Convert lb to kg if needed: Weight in kg = Weight in lb ÷ 2.2
- Example: For a 10 kg dog at 15 mg/kg: 10 × 15 = 150 mg per dose.
- Round to nearest capsule size (e.g., 100 mg or 300 mg) or use compounded forms for precision. Split capsules if approved by your vet.
For U.S. users (lb-based): Use equivalent rates like 2.3 mg/lb (low), 6.8 mg/lb (medium), 13.6 mg/lb (high).
Dosage Calculator Tables
Below are pre-calculated tables for common dog weights. These use low (5 mg/kg), medium (15 mg/kg), and high (30 mg/kg) rates for a single dose. Multiply by frequency (e.g., ×3 for every 8 hours) for daily total. These are general—adjust per condition and vet advice.
Table 1: Dosage by Weight in Kilograms (Metric)
Dog Weight (kg) | Low Dose (5 mg/kg) | Medium Dose (15 mg/kg) | High Dose (30 mg/kg) |
---|---|---|---|
1 | 5 | 15 | 30 |
5 | 25 | 75 | 150 |
10 | 50 | 150 | 300 |
15 | 75 | 225 | 450 |
20 | 100 | 300 | 600 |
25 | 125 | 375 | 750 |
30 | 150 | 450 | 900 |
35 | 175 | 525 | 1050 |
40 | 200 | 600 | 1200 |
45 | 225 | 675 | 1350 |
50 | 250 | 750 | 1500 |
Example Usage: A 20 kg dog with moderate pain might get 300 mg every 12 hours (medium dose ×2 daily = 600 mg total).
Table 2: Dosage by Weight in Pounds (Imperial)
Dog Weight (lb) | Low Dose (2.3 mg/lb) | Medium Dose (6.8 mg/lb) | High Dose (13.6 mg/lb) |
---|---|---|---|
2.2 | 5.06 | 14.96 | 29.92 |
11 | 25.3 | 74.8 | 149.6 |
22 | 50.6 | 149.6 | 299.2 |
33 | 75.9 | 224.4 | 448.8 |
44 | 101.2 | 299.2 | 598.4 |
55 | 126.5 | 374 | 748 |
66 | 151.8 | 448.8 | 897.6 |
77 | 177.1 | 523.6 | 1047.2 |
88 | 202.4 | 598.4 | 1196.8 |
99 | 227.7 | 673.2 | 1346.4 |
110 | 253 | 748 | 1496 |
Example Usage: A 44 lb dog (≈20 kg) with anxiety might get ≈300 mg (medium dose) 1-2 hours before stress.
Condition-Specific Dosage Adjustments
- Pain: Use low-medium range; titrate slowly over days.
- Seizures: Medium-high range every 8 hours; monitor for weeks.
- Anxiety (Situational): High range as a one-off dose; combine with trazodone if needed.
For custom calculations, use a spreadsheet or app with the formula above. If your dog’s weight isn’t listed, interpolate (e.g., for 12 kg: Low = 12 × 5 = 60 mg).
Administration Guide – Gabapentin Dosage Calculator for Dogs
- How to Give: Oral capsules/tablets with or without food. Hide in soft treats (e.g., peanut butter) to mask bitterness. For liquids, use a syringe.
- Frequency: 2-4 times daily. Effects last 8-24 hours; shorter in healthy dogs.
- Storage: Room temperature, away from light/moisture.
- Monitoring: Watch for effects in 1-2 hours. Track behavior in a journal for your vet.
Simple Administration Schedule Diagram (Text-Based Infographic)
Daily Routine Example (Every 8 Hours for Seizures/Pain - Medium Dose)
┌─────────────────────┬─────────────────────┬─────────────────────┐
│ Morning (8 AM) │ Afternoon (4 PM) │ Evening (12 AM) │
│ Dose: e.g., 150 mg │ Dose: e.g., 150 mg │ Dose: e.g., 150 mg │
│ With breakfast │ With snack │ With dinner │
└─────────────────────┴─────────────────────┴─────────────────────┘
↑ Titrate based on response; consult vet for adjustments ↑
Total Daily: 450 mg (for 10 kg dog at 15 mg/kg)
This timeline ensures steady levels. Adjust for every 12 hours by skipping one dose (e.g., morning and evening only).
Pill Size Reference Infographic (Common Forms)
- 100 mg Capsule: For small dogs (<10 kg, low dose).
- 300 mg Capsule: For medium dogs (10-30 kg, medium dose).
- Split/Compounded: For precision in tiny breeds (e.g., 25 mg for 5 kg low dose).
Size Guide:
Small Dog (5 kg) → 25-75 mg (¼-¾ of 100 mg capsule)
Medium Dog (20 kg) → 100-300 mg (1-3 capsules)
Large Dog (40 kg) → 200-1200 mg (2-12 capsules or compounded)
Side Effects and Monitoring
Common side effects (usually mild and temporary):
- Sedation/drowsiness (most frequent; start low to build tolerance).
- Ataxia (wobbly gait, poor coordination).
- GI upset (vomiting, diarrhea, constipation).
- Hind leg weakness (in older dogs; reduce dose).
Rare: Allergic reactions (swelling, hives—stop immediately). Overdose signs: Extreme lethargy, severe incoordination—seek emergency vet care. Most dogs tolerate up to 50 mg/kg well, but monitor closely.
Precautions and Warnings – Gabapentin Dosage Calculator for Dogs
- Contraindications: Use caution in dogs with kidney/liver disease (longer effects); adjust dose downward. Not for pregnant/nursing dogs without vet approval.
- Drug Interactions: May enhance sedatives (e.g., opioids, trazodone); inform your vet of all meds.
- Tapering: For long-term use (especially seizures), taper over 1-2 weeks to avoid withdrawal seizures.
- Overdose Risk: Non-fatal but uncomfortable; xylitol in some liquids can cause hypoglycemia—use vet-formulated only.
- Breed Considerations: Smaller breeds (e.g., Chihuahuas) may need compounded doses; larger breeds (e.g., Labs) handle higher volumes better.