Gastric Ulcers in Llamas: Signs, Causes, and Treatment

Gastric ulcers are open sores or erosions in the lining of a llama’s stomach compartments. South American camelids have three stomach compartments rather than the four compartments seen in cattle, and ulcer disease may affect the glandular stomach lining or adjacent upper intestinal tissue. In practice, llamas with ulcer disease may show subtle digestive discomfort for days to weeks before they look seriously ill.

These ulcers develop when the normal protective lining is overwhelmed by acid, digestive secretions, poor blood flow to the stomach wall, inflammation, or severe whole-body stress. In camelids, ulcer disease is often discussed alongside other causes of abdominal pain, weight loss, and anemia because the signs overlap. Some llamas have mild ulcers that respond to medical care, while others develop bleeding, perforation, or peritonitis and become emergencies.

For pet parents, the hard part is that ulcers do not always cause dramatic early signs. A llama may eat less, lose condition, seem quieter than usual, or show intermittent colic. That is why ongoing appetite changes, dark stool, or unexplained weakness deserve a prompt visit with your vet.

Gastric ulcers in llamas are usually multifactorial. Stress is a major contributor and may include transport, weaning, hospitalization, herd disruption, heat stress, severe weather, pregnancy-related strain, or another painful illness. Merck notes that physiologic stress and ulcerogenic drugs are recognized drivers of gastrointestinal ulceration in animals, and camelids are especially prone to becoming clinically ill when feed intake drops or another disease is present.

Underlying disease is another common trigger. Heavy parasite burdens, chronic infection, liver disease, kidney disease, dental problems, and inflammatory digestive disease can all reduce appetite and weaken the stomach’s protective barriers. In camelids, poor intake and concurrent illness often matter as much as acid itself.

Medication effects can also play a role. Nonsteroidal anti-inflammatory drugs, or NSAIDs, are useful medicines when chosen carefully by your vet, but Merck warns that this drug class can contribute to gastric ulceration in animals. That does not mean these medications should never be used. It means dosing, duration, hydration status, and case selection matter.

Less commonly, ulcers may be associated with masses, severe systemic disease, or local tissue injury. Because the causes overlap, your vet will usually look for the ulcer and the reason it formed at the same time.

Diagnosis starts with a careful history and physical exam. Your vet will ask about appetite, weight loss, manure changes, recent stress, medications, parasite control, and any signs of colic. On exam, they may find poor body condition, dehydration, abdominal pain, pale gums, or evidence of shock in severe cases.

Bloodwork is often the next step. A complete blood count may show anemia from bleeding or inflammation, while chemistry testing can help identify dehydration, low protein, liver changes, kidney changes, or other illnesses that may have contributed. Fecal testing helps assess parasite burden, which is especially important in llamas with chronic weight loss or poor thrift.

Imaging and supportive diagnostics help rule in or rule out complications. Ultrasound may help detect free abdominal fluid, thickened bowel, or signs of peritonitis. Abdominal radiographs are not usually the best test for nonperforating ulcers, but Merck notes imaging can help assess for obstruction or peritonitis in ulcer patients more broadly. In referral settings, endoscopy may sometimes be considered, though confirming ulcers in camelids can still be challenging depending on location.

In many llamas, the diagnosis is presumptive rather than perfectly visualized. That means your vet combines the history, exam, lab findings, response to treatment, and exclusion of other causes such as parasites, foreign material, liver disease, or abdominal infection.

Prevention focuses on reducing stress and keeping the digestive tract working steadily. Llamas do best with consistent access to appropriate forage, clean water, shade, and a predictable routine. Sudden feed changes, overcrowding, transport stress, and prolonged fasting can all increase digestive strain. Merck’s camelid management guidance also emphasizes practical husbandry details such as heat-stress prevention and sound nutrition, both of which support overall gut health.

Work with your vet on parasite control, body condition monitoring, and early treatment of painful or chronic disease. A llama that is not eating well for any reason is at higher risk for secondary digestive complications. Dental issues, heavy parasite loads, and chronic inflammatory disease should be addressed before they lead to prolonged poor intake.

Medication review matters too. If your llama needs NSAIDs or other drugs that may irritate the stomach, your vet can help choose the safest option, dose, and duration for that individual. Do not add over-the-counter human medications unless your vet specifically tells you to.

Finally, pay attention to subtle changes. Early weight loss, reduced cud chewing, quieter behavior, or intermittent colic may be the first clues that something is wrong. Prompt veterinary attention often gives the widest range of treatment options and the best chance of recovery.