# Clindamycin for Dogs: Ear Infections, UTIs, and Teeth Clindamycin is a prescription antibiotic that works well against many bacterial infections in dogs, including some ear infections, dental and gum infections, and certain urinary tract infections. Whether it is the right choice for your dog depends on the type of infection, the bacteria involved, and your veterinarian's exam. This article is educational and is not a substitute for veterinary diagnosis or treatment. ## Quick Answer - Clindamycin is a good fit for many dental and gum infections and for bacterial skin and soft tissue infections, and it is often used for ear infections caused by Staphylococcus bacteria [1][2]. - It is not the best choice for every ear infection. Ear infections caused by Pseudomonas aeruginosa are frequently resistant to common antibiotics, and those cases need different treatment [2]. - Urinary tract infections (UTIs) may respond to clindamycin, but your vet should confirm the bacteria with a urine culture before choosing it. - Never use leftover clindamycin from a previous illness or from a human prescription. The dose is calculated for your dog's weight and condition. - Give the full course exactly as prescribed, even if your dog seems better in a few days. ## What Clindamycin Is and What Veterinarians Use It For Clindamycin is an antibiotic that veterinarians prescribe for dogs with certain bacterial infections. It belongs to a class of drugs that target a wide range of bacteria, especially those that grow without oxygen and many types of Staphylococcus. Veterinarians commonly reach for clindamycin in three situations: **Dental and gum infections.** Periodontal disease is the major reason for tooth loss in dogs. Bacterial infection of the tissue around the teeth inflames the gums, the ligaments that anchor the teeth, and the surrounding bone [3]. Clindamycin penetrates bone and dental tissue well, which is why it is a common choice for dental abscesses and deep gum infections. **Skin and soft tissue infections.** A 2024 study of staphylococcal skin infections in dogs with no recent antibiotic exposure found that 100% of the isolates tested were susceptible to clindamycin [1]. That makes it a reasonable first choice for many routine skin infections. **Ear infections.** Clindamycin for dogs ear infection is a common search for a reason. Staphylococcus pseudintermedius is the most frequently isolated bacterium in canine otitis externa, accounting for about 41% of cases, and Staphylococcus aureus accounts for about 23% [2]. Clindamycin covers many of these gram-positive organisms. However, Pseudomonas aeruginosa, found in about 19% of cases, is a gram-negative bacterium that is often highly resistant to many antibiotics, including more than 70% resistance to third-generation cephalosporins and 93% resistance to amoxicillin-clavulanic acid [2]. If Pseudomonas is the culprit, clindamycin will not help. **Urinary tract infections.** Clindamycin can be used for some UTIs, but it is not the first-line drug for most uncomplicated bladder infections. The bacteria that cause UTIs vary, and resistance patterns differ by region and by the individual dog. A urine culture with susceptibility testing is the most reliable way to know whether clindamycin will work. ## How Clindamycin Works Clindamycin stops bacteria from making the proteins they need to survive and multiply. Without those proteins, the bacteria stop growing and the dog's immune system can clear them. This mechanism explains why clindamycin works against some bacteria and not others. Gram-positive cocci like Staphylococcus are usually vulnerable. Gram-negative rods like Pseudomonas often are not, because they have outer membranes and efflux pumps that keep the drug out or push it back out [2]. Clindamycin also reaches high concentrations in bone, dental abscesses, and soft tissues, which is why it performs well in dental and skin infections [1]. ## Dosing Basics for Dogs ### Who decides the dose Your veterinarian calculates the dose based on your dog's weight, the infection being treated, and your dog's overall health. Never guess a dose or use a pill left over from another pet or a human prescription. The exact milligram amount is not something you should determine on your own. ### How it is given Clindamycin is usually given by mouth as a capsule, tablet, or liquid. It is often given with food to reduce stomach upset. Follow the label directions exactly. If your vet says twice daily, space the doses about 12 hours apart. ### What to do about a missed dose If you miss a dose, give it as soon as you remember, unless it is almost time for the next dose. In that case, skip the missed dose and go back to your regular schedule. Do not give two doses at once to make up for a missed one. ### How long treatment lasts The length of treatment depends on the infection. Dental infections may need a longer course than a simple skin infection. Ear infections often require both systemic antibiotics and topical ear medication. Your vet will tell you exactly how many days to give the drug. ## Common and Serious Side Effects | Side effect | How common or serious | What to do | |---|---|---| | Vomiting, diarrhea, loss of appetite | Common, usually mild | Give with food. Call your vet if it continues or your dog stops eating. | | Drooling or lip smacking | Common with liquid or capsules | Offer a small treat or food after the dose. | | Severe or bloody diarrhea | Less common, serious | Stop the drug and call your vet the same day. This can be a sign of a serious gut infection. | | Allergic reaction (hives, facial swelling, trouble breathing) | Rare, emergency | Stop the drug and seek emergency veterinary care immediately. | | Increased liver enzymes | Uncommon, found on blood work | Your vet may monitor blood work during long courses. | Most dogs tolerate clindamycin well. The most frequent complaint is mild stomach upset, which often improves when the medication is given with a meal. ## Who Should Not Take It and Drug Interactions Clindamycin is not right for every dog. Tell your veterinarian about all medications, supplements, and health conditions before starting treatment. **Dogs with known allergy to clindamycin or lincomycin** should not take it. **Dogs with liver or kidney disease** may need a different drug or a lower dose. Your vet may want blood work before and during treatment. **Dogs with a history of severe diarrhea or colitis** may not be good candidates, because clindamycin can cause diarrhea. **Drug interactions to mention to your vet:** - Other antibiotics, especially those that also affect protein synthesis - Neuromuscular blocking drugs used during anesthesia - Cyclosporine and other drugs that affect liver enzymes - Antacids and stomach acid reducers, which can change absorption Do not start any new medication, including over-the-counter products, without asking your vet first. ## Overdose and When to Call a Veterinarian or Poison Control If your dog eats more clindamycin than prescribed, call your veterinarian right away. Signs of overdose can include severe vomiting, diarrhea, drooling, wobbliness, or collapse. If your regular vet is closed, contact a pet poison control service. The ASPCA Animal Poison Control Center is available at (888) 426-4435. The Pet Poison Helpline is available at (855) 764-7661. Both may charge a consultation fee. Bring the medication bottle with you to the phone or to the clinic so you can tell them the strength and how many pills were taken. ## Clindamycin for Dogs Ear Infection: What to Expect Ear infections in dogs are common. The most common disorder of the ear canal is otitis externa, which is inflammation of the canal lining. It can be caused by parasites, objects stuck in the ear, allergies, bacterial or yeast infections, or middle ear infections [4]. If your dog has a bacterial ear infection caused by Staphylococcus, clindamycin may be part of the treatment plan. But systemic antibiotics alone are often not enough. Your vet will usually also clean the ear and prescribe topical medication. Identifying every cause is essential, because unless all causes are treated, the condition often returns [4]. Your vet will examine the ear with an otoscope, which may require sedation if the ear is painful or blocked. During this exam, your vet may take samples of ear discharge to examine under a microscope or to culture [4]. That testing is how you find out whether clindamycin is the right drug. If the infection has spread to the middle ear, signs can include head shaking, ear scratching, rubbing the ear on the floor, head turning toward the affected side, pain, and discharge. Recurrent otitis externa suggests that otitis media might be present [5]. Middle ear infections can also cause facial paralysis on the same side as the ear problem, and inner ear infections can cause head tilt, balance loss, difficulty walking, and uncontrollable eye movements [5]. These cases need a thorough workup, not just a pill. For more on ear infection treatment options, see [What Is The Treatment For Ear Infection In Dogs](/knowledge/veterinary-medicine/clinical-methods/what-is-the-treatment-for-ear-infection-in-dogs) and [Dog Ear Infections Treatment](/knowledge/veterinary-medicine/clinical-methods/dog-ear-infections-treatment). ## Clindamycin for Dogs UTI: What to Know Urinary tract infections in dogs are usually caused by bacteria that travel up the urethra into the bladder. The most common signs are frequent urination, straining to urinate, accidents in the house, and blood in the urine. Clindamycin can treat some UTIs, but it is not the typical first choice. Many vets prefer drugs that concentrate well in urine and cover the most common urinary pathogens. The right antibiotic depends on which bacterium is causing the infection and what it is susceptible to. If your dog has recurring UTIs, a urine culture and susceptibility test is the best way to choose an effective antibiotic. Your vet may also look for underlying causes like bladder stones, anatomical abnormalities, or diabetes. Never use leftover clindamycin from a previous UTI to treat a new one. The bacteria may have changed, and the dose may be wrong for your dog's current weight. ## Clindamycin for Dogs Teeth: A Common and Effective Use Dental disease is one of the most common problems veterinarians see in dogs. Bacterial infection of the tissue around the teeth causes inflammation of the gums, the ligaments that anchor the teeth, and the surrounding bone. If periodontal disease goes untreated, teeth can be lost because their supporting tissues are destroyed. This is the major reason for tooth loss in dogs [3]. Periodontitis is more severe and includes damage to the gums, ligaments, and bone. It usually develops after years of plaque, tartar, and gingivitis. It is irreversible and causes permanent loss of tooth support. Small-breed dogs tend to have more problems with periodontitis than large-breed dogs. Back teeth are affected more often than front teeth, and upper teeth are affected more severely than lower teeth [3]. Clindamycin is a frequent choice for dental infections because it penetrates bone and dental tissue well and covers many of the bacteria involved. It is often prescribed before or after a dental cleaning or tooth extraction. Antibiotics alone do not fix dental disease. The underlying plaque and tartar must be removed, and damaged teeth may need to be extracted. Your vet will discuss the full plan, which may include anesthesia, dental radiographs, and a professional cleaning. ## Limitations and When to Contact a Veterinarian Clindamycin is not a cure-all. It does not treat yeast infections, which are common in dog ears. It does not treat viral infections. It may not work against Pseudomonas or other resistant bacteria [2]. And it cannot replace proper ear cleaning, dental care, or treatment of underlying allergies. Call your veterinarian the same day if your dog: - Vomits repeatedly or cannot keep the medication down - Develops severe or bloody diarrhea - Refuses to eat or seems very tired - Has worsening ear pain, head tilt, or balance problems - Shows new swelling, hives, or facial swelling Seek emergency care immediately if your dog: - Has trouble breathing or collapses - Has a seizure - Has uncontrollable eye movements or cannot stand - Has facial paralysis or drooping on one side Schedule a routine visit if: - Your dog's symptoms have not improved after a few days of treatment - The infection returns after finishing the course - You notice new symptoms that were not there before Every dog is different. Your veterinarian needs to examine your dog, run appropriate tests, and tailor treatment to the specific infection. Do not adjust the dose or stop the medication early without talking to your vet first. ## Frequently Asked Questions ### Can I give my dog clindamycin for an ear infection without seeing a vet? No. Ear infections have many causes, including bacteria, yeast, parasites, allergies, and foreign objects, and the treatment differs for each. Giving the wrong antibiotic can delay proper care and allow the infection to worsen or spread to the middle ear. ### How long does it take for clindamycin to work in dogs? Most dogs start to improve within a few days, but the full course must be completed even if symptoms disappear. Stopping early can allow surviving bacteria to regrow and become resistant. Your vet will tell you the exact duration for your dog's specific infection. ### Can clindamycin treat a dog's urinary tract infection? It can treat some UTIs, but it is not the usual first choice. The best way to know is a urine culture that identifies the bacteria and tests which antibiotics kill it. Your vet will choose the drug based on those results and your dog's health history. ### Is clindamycin safe for dogs with dental infections? Yes, it is commonly used for dental and gum infections because it reaches high concentrations in bone and dental tissue. However, antibiotics alone do not cure dental disease. Professional cleaning or extraction is usually needed to remove the source of infection. ### What should I do if my dog vomits after taking clindamycin? Try giving the next dose with a small meal to reduce stomach upset. If vomiting continues, if your dog refuses food, or if you see blood in the vomit or stool, call your vet. Severe diarrhea or bloody diarrhea needs same-day attention. ## Related Articles - [What Is The Treatment For Ear Infection In Dogs](/knowledge/veterinary-medicine/clinical-methods/what-is-the-treatment-for-ear-infection-in-dogs) - [Natural Remedies For Dog Ear Infection](/knowledge/veterinary-medicine/clinical-methods/natural-remedies-for-dog-ear-infection) - [Dog Ear Infections Treatment](/knowledge/veterinary-medicine/clinical-methods/dog-ear-infections-treatment) - [Dog Ear Infection Treatment](/knowledge/veterinary-medicine/clinical-methods/dog-ear-infection-treatment) - [Dog Ear Infections Natural Treatment](/knowledge/veterinary-medicine/clinical-methods/dog-ear-infections-natural-treatment) - [Dog Ear Infection Natural Remedy](/knowledge/veterinary-medicine/clinical-methods/dog-ear-infection-natural-remedy) - [Clindamycin for Dogs: Dosage, Uses, and Duration](/knowledge/veterinary-medicine/pet-medication-guide/clindamycin-for-dogs-dosage-uses) - [Clindamycin Side Effects in Dogs: What to Watch For](/knowledge/veterinary-medicine/pet-medication-guide/clindamycin-dog-side-effects) - [Dog Tooth Infection: Signs, Abscesses, and Treatment](/knowledge/veterinary-medicine/dental-care/dog-tooth-infection-signs-treatment) ## References 1. [Staphylococcal skin infection isolates from dogs without recent antibiotic exposure are 100% susceptible to clindamycin](https://pubmed.ncbi.nlm.nih.gov/39996263/). Frontiers in veterinary science, 2024. 2. [Bacterial Agents and Antimicrobial-Resistance Patterns in Canine Otitis Externa](https://pubmed.ncbi.nlm.nih.gov/41302025/). Animals : an open access journal from MDPI, 2025. 3. [Dental Disorders of Dogs - Dog Owners](https://www.merckvetmanual.com/dog-owners/digestive-disorders-of-dogs/dental-disorders-of-dogs). Merck Veterinary Manual. 4. [Ear Infections and Otitis Externa in Dogs - Dog Owners](https://www.merckvetmanual.com/dog-owners/ear-disorders-of-dogs/ear-infections-and-otitis-externa-in-dogs). Merck Veterinary Manual. 5. [Otitis Media and Interna (Middle and Inner Ear Infections) in Dogs - Dog Owners](https://www.merckvetmanual.com/dog-owners/ear-disorders-of-dogs/otitis-media-and-interna-middle-and-inner-ear-infections-in-dogs). Merck Veterinary Manual. ## Further Reading - [American Veterinary Medical Association: First Aid Tips for Pet Owners](https://www.avma.org/resources-tools/pet-owners/emergencycare/first-aid-tips-pet-owners) - [Merck Veterinary Manual: Dog Owners](https://www.merckvetmanual.com/dog-owners) - [Cornell Richard P. Riney Canine Health Center: Canine Health Information](https://www.vet.cornell.edu/departments-centers-and-institutes/riney-canine-health-center/canine-health-information)