If your dog has overdosed on a medication, supplement, or toxic substance, the single most important step is calling a veterinary professional immediately. Call your regular vet if they’re open, or an emergency animal hospital if they’re not. You can also reach the ASPCA Animal Poison Control Center at (888) 426-4435 (a consultation fee may apply). Speed matters more than almost anything else you do in the next hour.
What to Do in the First 5 Minutes
Before you make the call, gather a few key details. You’ll need to tell the vet what your dog ingested, approximately how much, when it happened (or when you think it happened), and your dog’s weight. If there’s packaging, a pill bottle, or a wrapper, grab it and bring it with you or read the active ingredients over the phone. This information helps the vet determine whether your dog is in real danger and what treatment to start.
While you’re preparing, keep your dog calm and in a safe, confined area. If your dog is seizing, don’t try to restrain their mouth or tongue. Just move furniture or objects away so they don’t injure themselves. Don’t offer food or water unless a vet tells you to.
Should You Make Your Dog Vomit?
This is one of the most common questions, and the answer depends entirely on what your dog swallowed. For some substances, inducing vomiting within the first one to two hours can prevent a large portion of the toxin from being absorbed. For others, like caustic chemicals or sharp objects, vomiting can cause more damage on the way back up. Never induce vomiting without being told to by a vet or poison control.
If a veterinary professional advises you to induce vomiting at home, the standard method is 3% hydrogen peroxide solution given by mouth: one teaspoon per five pounds of body weight, with a maximum of three tablespoons for dogs over 45 pounds. You can use an oral syringe to squirt it toward the back of the tongue. Most dogs vomit within 10 to 15 minutes. If your dog doesn’t vomit after the first dose, the vet may advise one more attempt, but do not keep dosing on your own.
Do not use salt, mustard, or any other home remedy to trigger vomiting. These can be toxic themselves.
Signs Your Dog Has Been Poisoned
Sometimes you won’t see your dog eat something dangerous. You’ll just notice something is off. The symptoms vary depending on the substance, but several warning signs show up across many types of overdoses: dilated pupils, a rapid heart rate, loss of coordination (stumbling, walking in circles), tremors or muscle rigidity, vomiting, excessive drooling, and agitation or unusual aggression. In severe cases, dogs can develop seizures, extreme body temperature spikes, or become unresponsive.
Some toxins cause symptoms within minutes. Others take hours. Xylitol, an artificial sweetener found in sugar-free gum, candy, and peanut butter, can trigger a dangerous blood sugar crash in as little as 10 to 30 minutes. Ibuprofen might not show obvious signs for several hours but can quietly damage the stomach lining or kidneys. If you even suspect your dog got into something, don’t wait for symptoms to appear before calling for help.
Common Household Substances and Their Danger Levels
Not every accidental ingestion is life-threatening, but some substances are far more dangerous to dogs than most people realize. Here are a few of the most common culprits and the doses where things get serious:
- Xylitol (sugar-free sweetener): Doses above 100 mg per kilogram of body weight can cause a dangerous blood sugar drop. Above 500 mg/kg, acute liver failure becomes a risk. For a 20-pound dog, even a small amount of sugar-free gum could be enough.
- Ibuprofen: Stomach ulceration can occur at doses above 25 mg/kg. Kidney damage becomes a concern above 100 mg/kg, and neurological effects above 400 mg/kg. A single 200 mg tablet could cause GI problems in a small dog.
- Naproxen: More toxic to dogs than ibuprofen. GI damage starts at just 5 mg/kg, with kidney effects above 25 mg/kg.
- Chocolate: The darker the chocolate, the more dangerous. Baking chocolate and dark chocolate contain the highest concentrations of the toxic compound.
- Grapes and raisins: No established safe dose exists. Some dogs develop kidney failure from just a few grapes, while others seem unaffected. Treat any ingestion as an emergency.
What Happens at the Vet
Treatment depends on what your dog ate, how much, and how long ago. If your dog arrives within the first couple of hours after ingestion, the vet may induce vomiting using a more reliable medication than hydrogen peroxide. After that window closes, or if vomiting isn’t appropriate, the next step is often activated charcoal given by mouth. This works by binding to toxins in the digestive tract before the body can absorb them. It’s effective against a wide variety of substances and can be repeated every several hours if needed.
For more severe cases, your dog may need IV fluids to protect the kidneys, anti-seizure medication, or temperature management if they’re overheating. Some fat-soluble toxins, like certain medications and vitamin D, can be treated with intravenous lipid emulsion therapy. This works by creating a kind of “lipid shuttle” in the bloodstream: fat particles in the IV solution pull the toxin away from vulnerable organs and redirect it to the liver and kidneys for processing and elimination.
Hospital stays for serious overdoses typically range from 24 hours to several days, depending on the substance and the dog’s response. Your dog will likely be on continuous monitoring, with blood work checked at intervals to track liver and kidney function.
Recovery and Follow-Up Monitoring
Even if your dog seems fine after initial treatment, some toxins cause delayed organ damage that doesn’t show up right away. Liver enzymes and kidney values often need to be rechecked a few days to a few weeks after the event to make sure nothing is silently worsening. If values come back elevated, your vet may start supportive therapies like antioxidants or medications that reduce liver inflammation, then recheck again after a few weeks.
During recovery at home, watch for reduced appetite, increased thirst or urination, lethargy, vomiting, or yellowing of the gums or whites of the eyes. These can signal that the liver or kidneys are struggling. Most dogs who receive prompt treatment for common household toxins recover fully, but the key word is “prompt.” The difference between a good outcome and a devastating one is almost always how quickly treatment begins.
How to Prepare Before an Emergency Happens
Save two numbers in your phone right now: your closest 24-hour emergency veterinary hospital and the ASPCA Animal Poison Control Center at (888) 426-4435. Know your dog’s current weight, since nearly every treatment decision depends on it. Keep a bottle of unopened 3% hydrogen peroxide in your first aid kit (check the expiration date every few months, as expired peroxide won’t work). And keep an oral syringe on hand for administering it.
Walk through your home with fresh eyes. Medications left on nightstands, sugar-free snacks in purses, open trash cans with discarded food, and dropped pills that rolled under the couch are the most common sources of accidental dog poisonings. A pill organizer knocked off a counter can turn into a multi-drug overdose in seconds for a curious dog. Storing medications behind closed doors and treating xylitol-containing products like you’d treat household chemicals goes a long way toward preventing the emergency in the first place.