If your dog ate a sanitary pad, call your veterinarian right away. This is not a wait-and-see situation. Sanitary pads contain super-absorbent materials that can swell to over 100 times their dry weight once they absorb stomach fluids, creating a serious risk of blockage. The urgency depends on your dog’s size and how much of the pad was eaten, but a vet call should happen within the hour.
Why Sanitary Pads Are Dangerous for Dogs
The biggest threat isn’t poisoning. It’s the physical expansion of the pad inside your dog’s digestive tract. Sanitary pads are made of bleached rayon, cotton, plastics, adhesive backing, and a core of sodium polyacrylate, the same super-absorbent polymer used in diapers. That polymer is extremely water-loving. Once it hits the moisture in your dog’s stomach, it absorbs fluid and swells into a gel-like mass.
In laboratory animals, this expanded gel caused severe stomach distension, pain, and in some cases death within 48 hours of ingestion. The swelling can press against the stomach walls or lodge in the intestines, cutting off the normal flow of food and fluid. The plastic backing and adhesive strips add another layer of risk because they don’t break down and can snag on the lining of the intestines as the body tries to push the material through.
A large-breed dog that swallows a small panty liner faces a different level of risk than a Chihuahua that eats a full-size overnight pad. But even in bigger dogs, the absorbent material can clump, expand, and cause a partial or complete blockage.
What to Do Right Now
First, figure out what’s missing. Check the trash or packaging to determine the size of the pad (panty liner, regular, overnight) and whether your dog ate the whole thing or just chewed part of it. This information helps your vet assess the risk.
Do not try to make your dog vomit. Your first instinct might be to get the pad back up, but inducing vomiting without veterinary supervision is risky here. Because the pad absorbs stomach fluid and expands, there’s a real chance it could get lodged in your dog’s esophagus on the way back up, turning one problem into a more dangerous one. If your vet determines vomiting is the right move, they’ll guide you through it or do it in-office with proper monitoring.
Call your regular vet if they’re open. If it’s after hours, call your nearest emergency animal hospital. Don’t wait for symptoms to appear before making the call.
Signs of a Blockage
Symptoms of a gastrointestinal obstruction can show up anywhere from a few hours to a couple of days after ingestion. The most common early signs are vomiting and loss of appetite. Your dog may also become lethargic, refuse water, or seem restless and uncomfortable. Some dogs will hunch their back or whimper when you touch their belly, which signals abdominal pain.
Diarrhea can occur, though it’s less common than vomiting. If the blockage is complete, your dog may strain to defecate without producing anything, or you might notice them trying to vomit repeatedly with nothing coming up. These are urgent signs.
In the most severe cases, where blood supply to a section of intestine is cut off, dogs can go into shock quickly. Signs include pale gums, rapid breathing, weakness, and collapse. This is a life-threatening emergency.
If your dog seems fine in the first few hours, that doesn’t mean you’re in the clear. Veterinary guidelines note that foreign objects that haven’t passed within 36 to 48 hours, or that aren’t moving on follow-up imaging, typically require surgical removal.
What Happens at the Vet
Your vet will likely start with a physical exam, feeling your dog’s abdomen for pain or any palpable mass. From there, imaging is the next step. X-rays can sometimes reveal fabric-like foreign material, which shows up with a distinctive striped pattern that sets it apart from normal stomach contents. However, soft materials like pads aren’t always obvious on a standard X-ray, so your vet may recommend an ultrasound or a contrast study (where your dog swallows a special liquid that outlines the blockage on imaging) to get a clearer picture.
If the pad is still in the stomach and hasn’t moved into the intestines, endoscopic removal is often possible. This involves passing a flexible camera and grasping tool down your dog’s throat while they’re sedated, pulling the material out without any incisions. It’s the least invasive option and carries a low risk of complications.
When the pad has already moved deeper into the intestinal tract, endoscopy becomes harder because visibility drops and the material may be stuck against fragile intestinal walls. In these cases, surgery is usually necessary. The most common procedure is a gastrotomy or enterotomy, where the surgeon opens the stomach or a section of intestine to remove the foreign material directly. Newer techniques combine a small abdominal incision with endoscopy: the surgeon manually pushes the material back toward the stomach through the intestinal wall, then removes it with an endoscope. This approach avoids cutting into the stomach itself, which lowers the risk of post-surgical infection.
Recovery and Costs
If the pad passes on its own or is removed endoscopically, recovery is typically quick. Your dog may need a day or two of bland meals and rest. Surgical recovery takes longer, usually one to two weeks of restricted activity, a protective cone, and follow-up visits to check the incision site.
Cost varies widely depending on where you live and what’s required. Based on real claims data from 2025, intestinal blockage surgery in dogs ranges from roughly $1,600 to $7,500. Individual line items give a sense of what to expect before surgery is even on the table: X-rays average around $263, ultrasounds around $333, blood work about $135, and IV fluids about $171. An emergency exam fee on top of these can add another $100 to $300 depending on the clinic.
Can a Dog Pass a Sanitary Pad Naturally?
Sometimes, yes. Small pieces of a pad, especially if your dog is a large breed, may pass through the digestive tract and show up in their stool within 24 to 72 hours. Your vet may advise a “watch and wait” approach if the amount ingested is small relative to your dog’s size, your dog is showing no symptoms, and the material appears to be moving on imaging.
During this monitoring period, watch your dog’s stool closely. You may see pieces of white or cotton-like material, plastic fragments, or adhesive strips. Keep feeding your dog their normal diet unless your vet says otherwise, and note every bowel movement so you can report back.
If your dog stops eating, starts vomiting, becomes lethargic, or hasn’t passed the material within two days, the window for watchful waiting is closed and intervention is needed.
Preventing It From Happening Again
Dogs are attracted to sanitary pads because of the biological scent. A used pad smells strongly of blood and body odor, which is irresistible to many dogs. This is normal canine behavior, not something you can train away easily. The fix is environmental: use a trash can with a secure lid in your bathroom, or keep the bathroom door closed. Pedal-operated or locking trash cans work well. Some dog owners switch to keeping a small lidded bin specifically for menstrual products, stored in a cabinet under the sink where their dog can’t reach it.