Dreamcatcher Alpacas
Alpaca health · Digestive problems

Impaction (Constipation) in Alpacas

Updated 2026-10-02By the Dreamcatcher Alpacas editorial team6 peer-reviewed references
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Urgent — contact your vet today

Early treatment makes a big difference. Don't wait more than a day.

A blockage of dry feed in the fore-stomach or intestine, most often in winter when water intake drops.

Category
Digestive problems
Urgency
Urgent

Signs & symptoms

  • Small, hard, dry fecal pellets or none
  • Straining at the dung pile
  • Reduced appetite
  • Mild colic

Related symptom guides: Alpaca Not Eating, Constipation & Straining.

What causes it?

Low water intake, very coarse or stemmy hay, sand, plastic or foreign material, bezoars.

Risk factors

  • Frozen water troughs
  • Coarse mature hay
  • Older alpacas with worn teeth

How vets diagnose it

Physical exam, ultrasound, rectal exam in larger animals.

Treatment

Vet-administered fluids and laxatives; surgery if needed.

Do not wait to see if it improves. Camelids hide illness, and by the time signs are obvious the problem is often advanced. Call your veterinarian.

Prevention

  • Heated water in winter
  • Good-quality hay
  • Dental checks

Research & references

PubMed lists 8 peer-reviewed papers on this topic in camelids. The most relevant include:

  1. Spiral colon impaction in juvenile alpacas: 12 cases (2006-2010). Hart JC, Burton AJ, Pinn TL et al. Journal of the American Veterinary Medical Association, 2013. PubMed 23634688 · DOI · cited 1×
  2. Acute gastrointestinal disease in 27 New World camelids: clinical and surgical findings. Cebra CK, Cebra ML, Garry FB et al. Veterinary surgery : VS, 1998. PubMed 9525025 · DOI · cited 22×
  3. Nutritional support for treatment of hepatic lipidosis in a llama. Van Saun RJ, Callihan BR, Tornquist SJ Journal of the American Veterinary Medical Association, 2000. PubMed 11128546 · DOI · cited 12×
  4. Spontaneous resolution of bilateral congenital patellar luxation in an alpaca cria. John EE, Viel L The Canadian veterinary journal = La revue veterinaire canadienne, 2018. PubMed 29904205 · cited 1×
  5. Fatal sand impaction of the spiral colon in a 1-month-old alpaca. Abutarbush SM, Petrie L The Canadian veterinary journal = La revue veterinaire canadienne, 2006. PubMed 16898111 · cited 2×
  6. [Nonsurgical and surgical treatment of an urachal fistula in an alpaca cria. A case report]. Kubus K, Wöckel A, Felton C et al. Tierarztliche Praxis. Ausgabe G, Grosstiere/Nutztiere, 2015. PubMed 26395385 · DOI

Frequently asked questions

What is impaction (Constipation) in alpacas?
A blockage of dry feed in the fore-stomach or intestine, most often in winter when water intake drops.
What are the signs of impaction (Constipation)?
Small, hard, dry fecal pellets or none, straining at the dung pile, reduced appetite and mild colic.
How do you prevent impaction (Constipation)?
Heated water in winter. Good-quality hay. Dental checks.
Is impaction (Constipation) an emergency?
Urgent — contact your vet today. Early treatment makes a big difference. Don't wait more than a day.

This page is educational and does not replace advice from a veterinarian who has examined your animals. Camelid medicine uses many drugs “extra-label”, so dosing must come from your vet. In an emergency, call your vet first. Read our disclaimer · How we write and review content.