How Long Does it Take for Probiotics to Work in Dogs?

Image of a small black dog laying down and looking up

If you’ve bought a probiotic for your dog, you may be wondering ‘how long does it take for probiotics to work in dogs?’

The simple answer is: it depends.

There are just so many factors that come into play when considering how long it’ll take for probiotics to be effective in your dog.

On this page, we’ll take a look at some of the likely scenarios you might find your dog in and how long it may take for probiotics to work in those scenarios.

If Your Dog has Diarrhea

Many dog owners try giving their dogs probiotics when they have diarrhea, and for good reason. It’s long been known that probiotics reduce the severity and duration of diarrhea in humans and studies have shown that probiotics do the same in dogs.

You can expect to see almost immediate relief from the severity of diarrhea and its symptoms in your dog.

One study found that probiotics reduced the duration of diarrhea in dogs from seven to four days on average. So you can expect probiotics to help reduce the time your dog has diarrhea by a few days. If your dog experiences diarrhea for an extended period of time, a trip to the veterinarian is necessary.

If Your Dog is Healthy

There are many health conditions that probiotics can benefit, but they’re very beneficial for otherwise healthy dogs as well. Probiotics aren’t just about targeting one specific condition or illness; they promote overall health and wellbeing by improving gut health.

In dogs, probiotics may promote better digestion, immune health, skin and coat health, and relief from stress/anxiety, digestive disorders and side effects from antibiotics.

If your dog is healthy, you may notice health benefits for your dog soon after starting probiotics or later on down the line. The health benefits that you can notice in your dog will likely be subtle but you can be confident that probiotics are doing their job internally to keep your dog healthy and keep them from getting sick.

If Your Dog Has a Health Condition

If your dog has any sort of health condition, probiotics may be able to help in treating the underlying cause or provide relief from symptoms. If your dog has a condition such as irritable bowel syndrome, you may find improvement in symptoms like diarrhea or constipation within a matter of days. Other conditions you may see improvement in after a longer period of time; it really depends on what condition your dog has and many other factors.


So how long does it take for probiotics to work in dogs?

You may notice improvements in your dog’s health in as little as a few days to as long as a couple of months. There are just too many variables to put a precise number on it. Overall health, genetic makeup, and gut health may vary greatly from one dog to another.

However, you can rest assured that if you give your dog probiotics his or her health will be better for it.