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PetDosageChart

Antibiotic (Tetracycline) · For Cats · 20 lb

How much Vibramycin for a 20 lb cat?

A 20 lb cat (9.1 kg) should receive approximately 45.4 mg of Vibramycin per dose, given every 12-24 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 · 20 lb cat

Vibramycin dose for a 20 lb cat

Low Dose

45.4

mg

Standard

45.4

mg

Max Safe

90.7

mg

Frequency

every 12-24 hours

Weight in kg

9.1 kg

Always confirm with your veterinarian before administering medication. These calculations are estimates based on published veterinary pharmacology references.

Other Weights

Vibramycin for a different size cat

FAQ · 20 lb cat

Questions about Vibramycin for a 20 lb cat

How much Vibramycin for a 20 lb cat?
A 20 lb cat should receive approximately 45.4 mg of Vibramycin (Doxycycline) per dose, given every 12-24 hours. That works out to about 1.75 × 25 mg. Always confirm with your veterinarian before administering medication.
What is the safe dose range of Vibramycin for a 20 lb cat?
The published dose range for a 20 lb cat is roughly 45.4 mg (low) to 90.7 mg (max safe), with 45.4 mg as the typical standard dose. Frequency: every 12-24 hours.
How often can I give Vibramycin to a 20 lb cat?
Vibramycin is typically given every 12-24 hours. Do not exceed the recommended frequency without veterinary guidance.

Need a different weight?

Use the calculator on the main Vibramycin page for any exact weight, or read the full dosage chart and safety information.

Full Vibramycin 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 Doxycycline.

Read more about our methodology and how we calculate dosages.