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Acetaminophen (Tylenol)

Pet medication safety reference — educational information only.
Medication reference

What to know

Acetaminophen (Tylenol) — medication safety for dogs and cats

EmergencyReference for: dogs and cats.

Overview

Acetaminophen is extremely dangerous to cats and can be toxic to dogs. Cats are at risk of red blood cell damage and liver injury even at small exposures relative to their size. Many cold/flu products combine acetaminophen with other toxic ingredients — never give human pain/cold products blindly.

Symptoms

Swelling of face/paws, brownish gums, labored breathing, vomiting, lethargy, jaundice

Typical onset

1–6 hours (may vary)

Formulations

Hidden in many OTC “PM” products and combination pain relievers; check every active ingredient.

What to do

Emergency veterinary care — especially for cats or if any tablets/liquid were ingested.

This page is educational and does not replace veterinary advice. For possible poisoning or ingestion, contact UVEC at (801) 218-2227 or ASPCA Poison Control at (888) 426-4435.

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Medication safety reference

Search common household medications and why they can be risky for pets. This is not dosing guidance — when in doubt, call us or poison control.

Educational reference only. It does not replace an exam or phone advice for your specific pet. Never give human medications to animals unless your veterinarian tells you exactly what to use.

23 results · 13 emergency-level

Acetaminophen is extremely dangerous to cats and can be toxic to dogs. Cats are at risk of red blood cell damage and liver injury even at small exposures relative to their size. Many cold/flu products combine acetaminophen with other toxic ingredients — never give human pain/cold products blindly.

Symptoms
Swelling of face/paws, brownish gums, labored breathing, vomiting, lethargy, jaundice
Onset
1–6 hours (may vary)
Formulations
Hidden in many OTC “PM” products and combination pain relievers; check every active ingredient.
What to do now
Emergency veterinary care — especially for cats or if any tablets/liquid were ingested.
Call UVEC now: (801) 218-2227
This tool is informational only and does not replace veterinary advice. For possible poisoning or ingestion, contact UVEC at (801) 218-2227 or ASPCA Poison Control at (888) 426-4435. Bring medication packaging when possible.
Common questions

About this tool

  • Is this tool telling me what dose to give my pet?

    No. It is a general education library about common household medications and why they can be dangerous to pets. Dosing depends on species, weight, health conditions, and the exact product — only your veterinarian should choose a medication plan for your animal.

  • My pet just ate pills. Should I use this page first?

    If you believe your pet swallowed medication, call Utah Veterinary Emergency Center or a poison hotline right away. Bring the bottle with strength (mg), formulation (tablet/capsule/liquid), and approximate number eaten.

  • Why do you ask for dog vs cat?

    Cats and dogs differ in sensitivity to many drugs (for example, acetaminophen). Filtering helps you read entries that apply to the pet you are worried about.

  • Are “natural” supplements or topical creams safer than pills?

    Not necessarily. Creams can be licked, and supplements can be concentrated or combined with other ingredients (including xylitol in some liquids). Always check labels and ask your veterinarian before exposing your pet.

  • Is this the same as calling poison control?

    No. Poison control can do case-specific triage using your pet’s weight and exact product. This page cannot replace that individualized guidance.

  • What are Utah Veterinary Emergency Center’s hours?

    We are open daily from 9:00 am to 9:00 pm for urgent care and appointments. For life-threatening emergencies outside those hours, call our number for guidance and referral to a 24-hour facility if needed.