A compounding pharmacy is a licensed pharmacy that prepares customized medications when an FDA-approved option cannot be used. These medications are created by a licensed pharmacist based on a prescription and may be needed when a patient has an allergy to an ingredient, requires a different dosage form, or needs access to a medication during a shortage.

A pet compounding pharmacy applies this same process to animals. Working under a veterinarian’s prescription, pharmacists can prepare medications in non-standard doses, adjust formulations to avoid certain ingredients, or create alternative forms such as flavored liquids, chews, or topical preparations to help pets take their medicine more easily.

What Types of Medications Can Be Compounded for Pets?

Veterinary compounding allows pharmacists to prepare a variety of medication forms for pets, such as:

  • Chewable treats or soft chews as alternatives to pills
  • Transdermal gels applied to the ear as an alternative dosage form
  • Topical creams or ointments in pet-friendly formulations
  • Suppositories or capsules in custom strengths
  • Adjusted dosages for animals of different sizes (hamsters to horses)
  • Compounded alternatives when an FDA-approved drug is temporarily unavailable or in shortage (as permitted by law)

All compounded medications are prepared as directed by a veterinarian’s prescription and designed for a specific patient (pet). While not FDA-approved, they are commonly used in veterinary care when commercial drugs are not viable.

Why Would a Pet Be Prescribed a Compounded Medication?

A veterinarian may prescribe compounding for several reasons:

  • Size or weight needs – Very small pets may require smaller doses.
  • Flavored formulations – Medications can be prepared as liquids, chews, or other forms with added flavors when a compounded prescription is otherwise medically necessary.
  • Allergy concerns – Inactive ingredients, such as dyes or fillers, may be excluded when a pet has an allergy or if the inert ingredient is harmful to animals (for example, xylitol).
  • Medication shortages – Compounded versions may be prepared when a drug is unavailable or discontinued.
  • Alternative dosage forms – Medications may be prepared as gels, liquids, or capsules depending on veterinary direction.
  • Combination formulas – In some cases, multiple medications may be prepared in a single dosage form. When that need arises, it is important to consider a pharmacy with veterinary compounding experience to help ensure medications are prepared appropriately.

FAQs About Pet Compounding Pharmacies

Are compounded pet medications FDA-approved?

No. Compounded medications are not FDA-approved. They are prepared under prescription when no commercial alternative meets a pet’s needs.

Do I need a prescription for compounded pet medication?

Yes. A licensed veterinarian must prescribe a compounded medication for your pet.

Can any pharmacy make compounded pet medications?

No. Only licensed compounding pharmacies with veterinary expertise should prepare medications for animals.