Understanding Exocrine Pancreatic Insufficiency (EPI) in Pets

By Lakeshore Road Animal Hospital

If your dog is eating normally but still losing weight, or has frequent diarrhea and a big appetite, Exocrine Pancreatic Insufficiency (EPI) could be the cause. At Lakeshore Road Animal Hospital, we want to help pet owners understand this condition and how it's managed so pets can live full, happy lives.

What Is EPI?

EPI is a condition where the pancreas doesn't produce enough digestive enzymes. These enzymes are needed to break down and absorb nutrients from food. Without them, pets can't get the nutrition they need—even if they’re eating well.

While EPI is most commonly seen in dogs (especially German Shepherds), it can also affect cats.

Signs of EPI in Pets

Some common signs include:

• Weight loss despite a good appetite
• Loose, pale, or greasy stools
• Increased hunger
• Flatulence
• Dull coat or poor body condition

These symptoms can look like other digestive issues, so it's important to get a proper diagnosis.

How Is EPI Diagnosed?

A simple blood test called the TLI (Trypsin-Like Immunoreactivity) test is the gold standard for diagnosing EPI. If you notice any signs, schedule an exam at Lakeshore Road Animal Hospital—early diagnosis makes a big difference.

Managing EPI

The good news? EPI is manageable with the right care:

• Enzyme supplementation: Digestive enzymes are added to each meal to help break down food.
• Specialized diet: Some pets benefit from low-fat, highly digestible diets.
• Vitamin support: Pets with EPI often need B12 (cobalamin) supplementation.

With consistent management, many pets with EPI go on to live active, healthy lives.