Antibiotic (Cephalosporin) · For Dogs · 90 lb
How much Cephalexin for a 90 lb dog?
A 90 lb dog (40.8 kg) should receive approximately 898.0 mg of Cephalexin per dose, given every 8-12 hours.
This dosage information is for educational purposes only. Always consult your veterinarian before giving any medication to your pet. Dosages may vary based on your pet's health conditions, other medications, and individual factors.
Content reviewed by licensed veterinarians. Sourced from Plumb's Veterinary Drug Handbook and the Merck Veterinary Manual.
Dosage · 90 lb dog
Cephalexin dose for a 90 lb dog
Low Dose
408.2
mg
Standard
898.0
mg
Max Safe
1224.5
mg
Frequency
every 8-12 hours
Weight in kg
40.8 kg
Always confirm with your veterinarian before administering medication. These calculations are estimates based on published veterinary pharmacology references.
Other Weights
Cephalexin for a different size dog
FAQ · 90 lb dog
Questions about Cephalexin for a 90 lb dog
How much Cephalexin for a 90 lb dog?
What is the safe dose range of Cephalexin for a 90 lb dog?
How often can I give Cephalexin to a 90 lb dog?
Need a different weight?
Use the calculator on the main Cephalexin page for any exact weight, or read the full dosage chart and safety information.
Full Cephalexin dosage guide →Sources · 09
Sources & references
The dosage information on this page is compiled from the following veterinary and pharmaceutical references:
- Plumb's Veterinary Drug Handbook — the standard veterinary pharmacology reference used by veterinarians worldwide.
- Merck Veterinary Manual — a trusted, peer-reviewed resource for veterinary professionals and pet owners.
- DailyMed (FDA Drug Labels) — official FDA-approved drug labeling and prescribing information for Cephalexin.
Read more about our methodology and how we calculate dosages.