Dogster is reader-supported. When you buy via links on our site, we may earn a commission at no cost to you. Learn more.

Ask the Vet

Tylosin for Dogs: Uses, Side Effects & FAQ (Vet Answer)

Dr. Stacie Grannum
Written and fact-checked by Dr. Stacie GrannumVet Approved
Dr. Stacie Grannum
Reviewed & Fact-Checked byDr. Stacie GrannumDVM (Veterinarian)
Dr. Stacie Grannum was born and raised in Arizona, USA. When she was a little girl, an encounter with a little animal changed her life forever. A tiny bird fell high from its nest, and Stacie diligently cared for it. Sadly, despite her best attempts to save it, the baby bird did not survive. From this devastating loss came a new ambition, carving the path that Dr. Grannum followed. She knew that she wanted to pursue a career in veterinary medicine. She worked hard toward that goal and dedicated her time to pursuing the field.View authorThe information is current and up-to-date in accordance with the latest veterinarian research. Learn more
Updated on June 29, 2026
Share
Medication in kibbles or pet food

Tylosin is a useful antibiotic and anti-inflammatory medication for treating diarrhea and inflammatory bowel conditions in dogs. It can be given as an injectable, orally as a powder, or compounded into a liquid. Some dogs may benefit from having it added to their food instead of being administered on an empty stomach. Side effects may include pain at the injection site or vomiting or diarrhea if taken orally. This medication can be helpful for dogs with recurrent episodes of diarrhea.

Dogster divider_v3_NEW_MAY_24_

What Is Tylosin?

Tylosin, also known by the brand name Tylan®, is an antibiotic in the erythromycin family used to treat diarrhea and inflammatory bowel disease in dogs. This medication has anti-inflammatory properties that make it useful for soothing and treating colitis in small pets. Research indicates that it is effective for treating recurrent bouts of diarrhea in dogs. Tear-staining, or epiphora, in small breed dogs, has also been effectively treated with Tylosin, though this is controversial because it may contribute to the development of antibiotic-resistant bacteria.1

Tylosin is available as an injectable form or comes as soluble granules or powder. The powder form should be stored in a tight container at room temperature and protected from light and moisture.

This medication is prescribed by veterinarians in a way that differs from label directions approved by the FDA, which is known as off-label use in veterinary medicine. Off-label, or extra-label, use of a medication is not uncommon, but you must follow the directions given by your veterinarian.

Image Credit: Yana Vasileva, Shutterstock

How Is Tylosin Given?

Tylosin is typically given by mouth in a powder form. However, this medication is bitter, so it may be placed in an empty gelatin capsule or masked in food/treat. It can also be compounded into a liquid form or given by injection. While this medication can be given with or without food, it may benefit your pet if given with food, especially if your dog vomits or acts nauseated after ingestion. Tylosin starts helping your dog in about 1–2 hours, but the full effect may not be noticeable for a few days.

What Happens If You Miss a Dose?

If you accidentally miss a dose, you may give it to your dog as soon as you remember. However, refrain from giving the dose if it is close to the next interval. Never give extra doses or two doses at the same time.

Potential Side Effects of Tylosin

Side effects of Tylosin may include mild gastrointestinal signs, such as:

  • Vomiting
  • Diarrhea
  • Loose stools

Pain at the injection site can also occur. Side effects may last longer in dogs with kidney or liver issues. In healthy dogs, Tylosin is short-acting and should start working within 24 hours. This medication may also falsely elevate liver enzymes on blood tests like ALT and AST.

Image Credit: A-photographyy, Shutterstock
dogster paw divider

Frequently Asked Questions

Is There Any Monitoring Required (Lab Work, etc.) While My Dog Is on Tylosin?

No specific monitoring is required other than making sure the medication is effective in treating your dog’s condition.

What Happens If I Accidentally Overdose My Dog?

In case of accidental overdose, call your veterinarian right away. They may have you bring your dog in for treatment and monitoring, direct you to an emergency facility, or have you call pet poison control for advice.

Should I Disclose All Supplements That My Dog Is Taking to My Veterinarian Prior to Treatment With Tylosin?

Yes, your veterinarian should be informed of all medications, supplements, and vitamins that your dog is currently taking, to prevent any medication interactions.

Dogster divider_v3_NEW_MAY_24_

Conclusion

Dogs with inflammatory bowel disease and diarrhea can benefit from the antibacterial and anti-inflammatory properties of Tylosin. It acts quickly and may take effect in as little as 1–2 hours. Noticeable effects may not be apparent until after a few days on the medication, however. The oral form of this medication is bitter, so it may be placed into an empty capsule or compounded into a liquid form for easier compliance. Owners may find it helpful to mix it with a tiny amount of cold butter to administer to pets, to help mask the taste.

Sources

Featured Image Credit: sophiecat, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything dog

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.

Dr. Stacie Grannum DVM (Veterinarian)
Authored by

Dr. Stacie Grannum DVM (Veterinarian)

Do Antibiotics Make Dogs Tired? Vet Reviewed Side Effects & FAQ

Do Antibiotics Make Dogs Tired? Vet Reviewed Side Effects & FAQ

Antibiotics are one of the most commonly prescribed drugs for pets, and it’s essential to understand their role in helping our dogs, why your veterinarian may…

Kerry-Ann Kerr
By Kerry-Ann Kerr · 3 weeks ago
Can I Put Antibiotic Ointment on a Dog? Vet-Approved Facts & Guidelines

Can I Put Antibiotic Ointment on a Dog? Vet-Approved Facts & Guidelines

Dogs can scrape their legs and feet, get minor cuts on their bodies, and even develop rashes from rolling around on the carpet or grass too much. So, what is a…

Rachael Gerkensmeyer
By Rachael Gerkensmeyer · 3 weeks ago
Imodium for Dogs: Is It Okay to Give Your Dog OTC Human Medicine? (Vet Answer)

Imodium for Dogs: Is It Okay to Give Your Dog OTC Human Medicine? (Vet Answer)

Let's talk Imodium for dogs — can you give a dog Imodium for his upset stomach? Are other OTC human meds like Kaopectate or Pepto-Bismol safe for your dog?

Dr. Chyrle Bonk
By Dr. Chyrle Bonk · 3 weeks ago
Albon for Dogs: Our Vet Explains the Uses & Potential Side Effects

Albon for Dogs: Our Vet Explains the Uses & Potential Side Effects

Albon is the brand name for the antibiotic sulfadimethoxine. Because it is an antibiotic, Albon can be used to treat a number of different types of bacterial i…

Dr. Kim Podlecki
By Dr. Kim Podlecki · 3 weeks ago
June 17, 2026

Thyme for Dogs: Our Vet Explains Potential Benefits, Uses & Risks

Thyme (Thymus vulgaris) is a popular spice that many people keep in their homes. You can even grow it in the garden or indoors to have a fresh herb to use in y…

Dr. Luqman Javed
By Dr. Luqman Javed
Thyme for Dogs: Our Vet Explains Potential Benefits, Uses & Risks
June 17, 2026

Dog Diarrhea: Our Vet Discusses Signs, Causes & Treatment

Almost all dog owners have encountered diarrhea at some point in their dog's life. A variety of causes can lead to diarrhea in puppies and dogs. Luckily, most…

Dr. Emma Chandley BVM
By Dr. Emma Chandley BVM
Dog Diarrhea: Our Vet Discusses Signs, Causes & Treatment
June 17, 2026

Can Dogs Have Aspirin? Our Vet Discusses Safety Facts

Since people can pick up over-the-counter pain relief medication for themselves, you might be tempted to think the same is true for our pets. The truth is that…

Dr. Ashley Darby
By Dr. Ashley Darby
Can Dogs Have Aspirin? Our Vet Discusses Safety Facts

Love Dogs? So Do We! Join the Dogster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.

You may opt-out at any time. View our Privacy Policy for more information.

The Dogster app on a phone