Cephalexin Dosage for Dogs Calculator

How to Calculate Cephalexin Dosage for Dogs

This calculator determines a cephalexin dose for dogs based on weight, using these formulas:

Dose per Administration (mg):

\[ \text{Dose (mg)} = \text{Weight (kg)} \times 15 \]

Daily Dose (mg):

\[ \text{Daily Dose (mg)} = \text{Dose (mg)} \times 2 \]

Tablets (or Chewable Tablets): Divide mg by tablet strength (e.g., 250 mg), round to nearest 0.5 tablet per dose; tablets per day ≈ dose tablets × 2 (twice daily).

Volume (mL, Liquid):

\[ \text{Volume (mL)} = \frac{\text{Dose (mg)}}{\text{Strength (mg/mL)}} \]

Where:

\( \text{Weight} \): Dog’s weight in kilograms (kg) or pounds (lb, converted to kg)
\( \text{Strength} \): Tablet size (mg) or liquid concentration (mg/mL, e.g., 125 mg/5 mL = 25 mg/mL)

Dose is given every 12 hours (twice daily). Use vet-approved cephalexin formulations.

Using the Cephalexin Dosage Calculator for Dogs

This tool estimates a cephalexin dose for dogs to treat bacterial infections like skin or urinary tract issues. Input the dog’s weight (kg or lb), select the form and strength (tablet, chewable tablet, or liquid), and results show the dose per administration, daily total, tablets per day (for solids), or mL (for liquid), with a frequency of every 12 hours.

Example: 10 kg dog, Tablets (250 mg):

Every 12 hours:
Amount per dose:
In milligrams: 150 mg
In Tablets (250 mg): 0.5 tablets
Daily dosage:
In milligrams: 300 mg
~Tablets per day (250 mg): 1.0 tablets
Dosing rules: 15 mg/kg per dose (30 mg/kg/day)

Consult a veterinarian before administering to confirm the dosage and treatment plan.

Frequently Asked Questions (FAQ)

1. What is cephalexin used for in dogs?

Cephalexin is an antibiotic that treats bacterial infections in dogs, such as skin infections, urinary tract infections, and respiratory issues.

2. How often should I give my dog cephalexin?

It’s typically given every 12 hours (twice daily) to maintain effective levels, but your vet may adjust this based on the infection.

3. Can I use human cephalexin for my dog?

Yes, if prescribed by a vet, but ensure it’s plain cephalexin (e.g., Keflex) without added ingredients unsuitable for dogs.

4. What’s the difference between tablet, chewable tablet, and liquid forms?

Tablets (250 mg, 500 mg) and chewable tablets (75 mg, 150 mg, 300 mg, 600 mg) are solid forms; tablets are standard, while chewables are easier for picky eaters. Liquid (125 mg/5 mL, 250 mg/5 mL) allows precise dosing for smaller dogs or those unable to swallow pills.

5. How do I adjust if my liquid strength differs?

Divide the mg dose by your liquid’s mg/mL concentration (e.g., for 125 mg/5 mL = 25 mg/mL, 150 mg = 6 mL).

6. How long does treatment usually last?

Treatment often spans 7-14 days, depending on the infection’s severity, but follow your vet’s prescribed duration.