Calculate the correct Cephalexin dosage for bacterial infections in dogs.
Patient Metrics
Standard: 22-33 mg/kg (10-15 mg/lb)
Recommended Dose
200mg
Total mg per dose
Dosage every 8-12 hours
Number of Capsules0.80
Dosage Spectrum (mg vs Weight)
Lethal for bacteria, but only if you finish the FULL course. Don't stop when symptoms disappear!
About this calculator
The Skin-Saving Antibiotic
Cephalexin is a 'First Generation Cephalosporin'. It works by inhibiting the synthesis of the bacterial cell wall, essentially causing the bacteria to rupture. It is the most common antibiotic used for canine pyoderma (skin infections).
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Pro Tips
Smell is Normal: Don't worry if the pills smell like sulfur or cat urine; that's the chemical nature of the drug.
Give with Food: This significantly reduces the chance of vomiting or nausea.
Timing Matters: Keep a consistent schedule (every 12 hours) to maintain steady blood levels.
No Penicillin Allergy: If your dog is allergic to penicillin, they might be allergic to Cephalexin too.
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Fun Facts
"Cephalexin is so effective that it starts working within 90-120 minutes of ingestion."
"The first cephalosporins were isolated from fungi found near a sewer outlet in Sardinia!"
"It is on the WHO List of Essential Medicines for both humans and animals."
"Unlike some antibiotics, Cephalexin does not cross the blood-brain barrier easily."
