Get

In Your Inbox

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

Why Is My Dog Weak While Taking Prednisone? Vet-Verified Info & FAQ

labrador retriever dog lying on the floor looking sad or sick

Taking medication can influence our bodies—and that includes our canine counterparts. We can’t ever truly foretell how some medications will impact the body until administration. So, if your dog had an allergic reaction, inflammation, immune-mediated disease, or nervous system disorder, a vet might have prescribed a medication called prednisone.

Prednisone is known for having mild to moderate side effects, but used at higher doses or for longer periods these can be severe. If your dog is experiencing any negative effects, like weakness, be sure to communicate with a vet. In this article, we aim to explain more about the drug and what you can expect.

dogster face divider

What Is Prednisone?

Prednisone is a common steroid used to treat a wide variety of inflammatory and reactive issues in the body. It is in a class of medications called corticosteroids. It can come in many forms, such as tablets, delayed-release tablets, liquid, injections, or concentrated solutions.

When used correctly, this drug is extremely beneficial to our doggy friends as well as human beings. It can help correct life-threatening diseases, settle extreme skin irritation, and make your dog more comfortable.

Prednisone Drug In Prescription Medication Pills Bottle
Image Credit: luchschenF, Shutterstock

What Does Prednisone Do?

Depending on the underlying issue, prednisone can help with many types of inflammatory issues—from severe allergic reactions to central nervous system diseases, like granulomatous meningoencephalomyelitis.1 While it can have its fair share of side effects, it is often necessary when prescribed.

Generally, prednisone helps to treat these main issues:
  • Chronic itchiness
  • Hives
  • Inflammatory skin diseases
  • Asthma
  • Autoimmune diseases
  • Endocrine disorders (Addison’s disease)
  • Neoplasia

It can treat many more issues than our list, but this includes the most likely uses.

Weakness in Dogs Taking Prednisone

Weakness is a commonly reported side effect of prednisone. Usually, it only affects long-term users because it causes the muscle fibers to atrophy. This particular problem can be mild to severe, impacting each dog differently.

When this atrophying happens, it gains the title “steroid myopathy,” which can be chronic or acute. In humans it is typically reversible over a few months if the dose is reduced or the medication stopped. Generally, the visual cues that your dog might suffer from steroid myopathy include visible loss of muscle mass.

Besides muscle weakness, other side effects can cause your dog to appear weak or lethargic. Prednisolone suppresses the immune system, making your dog more susceptible to infections. One common scenario is developing an infection while using prednisolone.

In addition, if your dog experiences any of the side effects listed below, they might seem weak.

Call a Vet Immediately

Call a vet right away if your dog is experiencing weakness while taking prednisone. Side effects can be manageable sometimes, but if your dog is experiencing weak hind legs while taking prednisone, a vet will likely need to remove them from the medication and look for alternative options of treatment.

Did you know you can speak to a veterinarian without having to travel? Just head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content Savings V1

Other Side Effects of Prednisone

When taken short-term, prednisone will often have some side effects that aren’t too serious. However, when taken long term, it can cause a laundry list of ailments. Steroids should only be used long-term at the discretion of a vet, when the benefits outweigh the risks.

Short-term side effects include:
  • Vomiting
  • Lethargy
  • Thirst
  • Urinating more
  • Increased appetite
  • Panting
  • Infections
Long-term side effects include:
  • Weight gain
  • Hair loss
  • Thin skin
  • Poor wound healing
  • Calcium deposits in the skin
  • Obesity
  • Lipidemia
  • Pancreatitis
  • Elevated liver enzymes
  • Secondary infections
  • Diabetes mellitus
  • Muscle weakness
  • Digestive tract ulceration
  • Iatrogenic cushing’s disease

It is crucial to keep an eye out for potentially dangerous side effects to keep your pet safe.

Testing for Medication Success or Failure

Any medication your dog takes has the potential to cause negative side effects. If you suspect that the medication might not be doing what you need it to or is causing other potentially concerning issues, your vet can run some tests to see how well the medication is working in the system.

dogster paw divider

Frequently Asked Questions

Should I Stop Giving My Dog Prednisone if They Show Signs of Muscle Weakness?

It’s not a good idea to just suddenly stop giving your dog prednisone if they show signs of muscle weakness without contacting a vet first. Prednisone needs to be gradually reduced in the body as when the medication is given the adrenal glands reduce their production of cortisol in response. The adrenal glands may need time to start producing their own cortisol again. If any removal of the medication happens, it should only be under direct professional guidance from a veterinarian.

Owner giving medicine in a pill to his dog
Image By: Creative Cat Studio, Shutterstock

Are There Alternative Medications to Prednisone a Vet Might Prescribe Instead?

If your dog doesn’t take prednisone well, a vet will need to look for alternatives. Other immunosuppressive medications like azathioprine or cyclosporine might be considered.

Are Certain Dogs More Likely to React Negatively to Corticosteroids Than Others?

There is currently no conclusive evidence that corticosteroid tolerance is less tolerated in certain breeds. However, certain contraindications exist such as existing Cushing’s disease/diabetes, gastric ulcers, and concurrent use of certain medications.

beagle dog lying on bed looking sick
Image Credit: HelgaBragina, Shutterstock

dogster paw divider

Conclusion

If your dog is experiencing muscle weakness, lethargy, or any concerning side effects after taking prednisone, please call a vet for further guidance. While side effects can be mild and temporary, it can also lead to long-term problems and be life-threatening in some cases. Weakness isn’t the only side effect to expect with prednisone. So, keep a lookout for anything else that might strike you as suspicious.


Featured Image Credit: Jaromir Chalabala, 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.

How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Dogster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

What a Yellow Ribbon on a Dog’s Leash Means: What to Do If You See One

If you’ve ever been out for a walk, with or without a pet, and noticed a dog with a bright yellow ribbon tied...

Berniefie (Bernese Mountain Dog Newfoundland Mix): Info, Pictures & More

Berniefies are mixes of Bernese Mountain Dogs and Newfoundlands. They’re likely to be enormous, and a Berniefie can weigh 90 to 150 pounds....

Why Do Dogs Love Snow? 3 Vet Reviewed Reasons & Care Tips

Watching a dog play in the snow, especially if it’s the first time they are experiencing it, can be quite amusing. They run,...

Golden Retriever Vizsla Mix: Info, Pictures, Care Guide & More

Sometimes referred to as a Golden Vizsla, the Golden Retriever Vizsla Mix is a hybrid dog that combines the Golden Retriever and Vizsla...

More related

10 Dog Friendly Beaches in Cape Cod, MA in 2025: Off & On-Leash Places

While there aren’t a lot of dog-friendly beaches in Cape Cod during peak season, if you’re in the area during the off-season, there...

16 Pet Adoption Statistics in the UK (Updated in 2025)

Note: This article’s statistics come from third-party sources and do not represent the opinions of this website. Pets have been shown to improve...

10 Interesting Labradoodle Facts That You Should Know

Labradoodles are a popular hybrid dog that’s a cross between a Labrador Retriever and a Poodle. These dogs have remained a favorite amongst...

Puppy Birth Defects: Our Vet Explains the Signs, Causes & Prevention

If you’re expecting a litter of pups, one thing you might be worried about is birth defects. Birth defects, also known as congenital...

Keep reading

Ollie vs. The Farmer’s Dog 2025 Comparison: Which Fresh Dog Food is Better?

Fresh, healthy dog food is becoming a popular choice for dog owners around the world, and there is a variety of dog food delivery services that promise to deliver this need. Dog owners have long been concerned about the fillers,...

Dogster_Dog Food Ollie VS The Farmer_s Dog

7 Best Dog Foods for Ear Infections in 2025 – Reviews & Top Picks

Did you know that food allergies may cause itchy ears? Dogs who develop chronic ear infections may be experiencing an allergic reaction to an ingredient in their food, such as chicken, beef, or grains. Certain breeds, such as Cocker Spaniels,...

dog eating in a food bowl

Purina Pro Plan vs. Kirkland Dog Food: Pros, Cons & What to Choose

Trying to choose the right dog food can be an overwhelming experience. Comparing ingredient lists, calories, nutrition tables, and flavors seems like a never-ending, confusing battle. You want to give your dog the best food possible, but it’s difficult to...

Dogster_Dog Food Purina Pro Plan VS Kirkland

Can Dogs Eat Tomatoes? Health & Nutrition Facts

Whether eaten raw or cooked in a delicious sauce, tomatoes are a staple of many human diets. If you’re tempted to slip your dog a slice, you’ll first want to determine whether dogs can safely eat tomatoes. Ripe tomatoes are...

Can Dogs Eat Tomatoes

HEB Heritage Ranch Dog Food Review 2025: Pros, Cons & FAQ

Review Summary HEB is an American supermarket that is centered in Texas. They have a few locations in Mexico, as well, but for the most part, their stores are found within Texas. Heritage Ranch is their brand of dog food....

Dogster_HEB Heritage Ranch Dog Food Review

Royal Canin Dog Food Review 2025 – Pros, Cons, Recalls & FAQ

Royal Canin is easily one of the most popular dog food brands out there. It produces many different recipes, including ones that are breed specific, so many dog owners are drawn to it. However, there are also negatives about this...

Halo Dog Food Review 2025: Recalls, Pros & Cons

Review Summary Halo is a health-conscious dog food brand marketed toward those who love their pets and the planet. All of the recipes we reviewed feature a well-balanced blend of vitamins, minerals, and probiotics to fortify your dog’s gut. The...

Dogster_Halo Dog Food Review

10 Best Dog Foods for Rat Terriers in 2025 – Reviews & Top Picks

Rat Terriers are adorable, medium-sized dogs that can bring light to your world. They are compact little dogs coming in at around 13 inches tall that love to play, be loved, and are tough as nails. Like with any dog...

Rat Terrier Smiling