Dog Poison Emergency Guide: What to Do When Your Dog Ingests a Toxin

Step-by-Step Poisoning Response Protocol

1. Stay calm and remove your dog from the source — Prevent further ingestion. If the substance is on the skin or fur, prevent your dog from licking it.
2. Identify what was ingested — Determine the substance, approximate amount, and time of ingestion. Retrieve the packaging, take a photo, or bring a sample. This information is critical for treatment decisions.
3. Call poison control immediately — ASPCA Poison Control (888-426-4435) will assess the situation and provide specific guidance. They will tell you whether to induce vomiting, go to the ER, or monitor at home. The consultation fee generates a case number that your vet can reference for treatment guidance.
4. Follow their instructions exactly — Do not freelance. Do not Google "home remedies." Follow poison control's specific instructions for your dog's weight, the substance, and the amount ingested.
5. Transport to emergency vet if directed — Bring the substance, packaging, the poison control case number, and your dog's weight and medical history.

The Hydrogen Peroxide Protocol

Hydrogen peroxide (3% solution only) is the standard at-home method for inducing vomiting in dogs. NEVER induce vomiting unless specifically directed by a veterinarian or poison control. Inducing vomiting with the wrong substance can cause more harm.

When Vomiting May Be Recommended

• Dog ingested the toxin within the last 2 hours
• Dog is fully conscious and alert
• The substance is not caustic, petroleum-based, or sharp
• You have been specifically told to induce vomiting by poison control or a vet

How to Administer (Only When Directed)

1. Use only 3% hydrogen peroxide — never use higher concentrations
2. Dose: 1 teaspoon (5 ml) per 10 pounds of body weight
3. Maximum dose: 3 tablespoons (45 ml) regardless of dog size
4. Administer with a syringe or turkey baster into the side of the mouth — aim between the cheek and teeth
5. Walk the dog gently for a few minutes — movement helps stimulate vomiting
6. Vomiting usually occurs within 10-15 minutes
7. If no vomiting after 15 minutes — you may give ONE more dose (same amount). Do not repeat a third time.
8. Save the vomit — your vet may need to examine it

When NOT to Induce Vomiting

Activated Charcoal

Activated charcoal binds to toxins in the gastrointestinal tract, preventing absorption into the bloodstream. It is most effective when given within 1-2 hours of ingestion.

• Only administer under veterinary direction — activated charcoal can interact with some toxins unpredictably
• Do not give if the dog is vomiting — aspiration of charcoal is dangerous
• Not effective for all toxins — does not bind well to alcohols, heavy metals, xylitol, or petroleum products
• Usually administered at the vet hospital with a dose of 1-2 g per kg body weight, often mixed with a cathartic (sorbitol) to speed GI transit
• Do NOT buy over-the-counter charcoal products marketed for human use — the formulation may differ. Use only veterinary-grade products directed by a vet.

Common Household Toxins

Specific Toxin Deep Dives

Antifreeze (Ethylene Glycol)

Antifreeze is one of the deadliest household toxins because it tastes sweet and dogs readily drink it. As little as one tablespoon can kill a small dog. The treatment window is extremely narrow — antidote (fomepizole) must be administered within 8-12 hours or irreversible kidney damage occurs. If you suspect antifreeze ingestion, this is a drop-everything, rush-to-the-ER emergency. Do not wait for symptoms. By the time kidney failure symptoms appear (12-24 hours after ingestion), it is usually too late.

Rat Poison (Rodenticides)

There are multiple types of rat poison, and treatment depends entirely on which type was ingested. Always bring the packaging to the vet.

• Anticoagulant rodenticides (d-CON, brodifacoum, bromadiolone) — Prevent blood clotting. Symptoms (bleeding) may not appear for 3-5 days. Treatable with vitamin K1 for 30 days. Good prognosis if caught early.
• Bromethalin — Causes brain swelling (cerebral edema). No antidote. Symptoms include tremors, seizures, paralysis. Time-critical — decontamination within 1-2 hours is essential.
• Zinc phosphide — Releases toxic phosphine gas in the stomach. Extremely dangerous. Do not induce vomiting (gas is released in the process, endangering you and the dog).
• Cholecalciferol (vitamin D3) — Causes dangerously elevated calcium levels, leading to kidney failure. Requires aggressive IV fluid therapy for 2-3 days.

What NOT to Do — Critical Mistakes

• Do NOT "wait and see" — Many toxins cause delayed symptoms. By the time signs appear, organ damage may be irreversible.
• Do NOT give milk or food to "dilute" the poison — this is a myth and can actually increase absorption of some toxins
• Do NOT use salt water to induce vomiting — salt water itself causes sodium toxicity, which can be fatal
• Do NOT give ipecac syrup — it is no longer recommended for dogs due to unpredictable effects
• Do NOT rely on internet advice instead of calling poison control — substances have specific protocols, and wrong treatment can be lethal
• Do NOT induce vomiting with caustic substances — they will burn the esophagus a second time on the way back up
• Do NOT assume your dog is fine if they are not showing symptoms yet — many toxins have a delayed onset of hours to days

Poison-Proofing Your Home

• Store all medications in closed cabinets — dogs chew through pill bottles easily
• Use pet-safe antifreeze (propylene glycol-based) instead of ethylene glycol
• Choose pet-safe pest control products — avoid rodenticides entirely if possible; use snap traps instead
• Secure cleaning products, laundry pods, and automotive chemicals behind child-proof locks
• Keep garbage cans secured with locking lids
• Check your garage, garden shed, and laundry room for accessible toxins
• Keep a pet first aid kit stocked with 3% hydrogen peroxide (check expiration dates regularly — expired peroxide will not work)

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