Oral suspensionOralNon sterile Rx only

Amlodipine Oral Liquid Suspension (Vet)

Oral Suspension Formulation

Amlodipine compounded as an oral liquid suspension for pets, measured by volume. Non sterile, prepared to a veterinarian's order in Chino, CA.

Reviewed by Linda Pungpravat, Compounding Pharmacist, RPh Mixwell Compounding Pharmacy, Chino, CA

USP <795> compliant
USP <800> hazardous drug lab
PCCA member

At a Glance

Preparation details for Amlodipine Oral Liquid Suspension (Vet)
Dosage form	Oral suspension
Route	Oral
Active ingredients	Amlodipine
Technology	Oral Suspension Formulation
Strengths in literature	Amodip (cats): 1.25 mg chewable tablet. Human tablets: 2.5, 5, 10 mg. Human oral suspension: 1 mg/mL.
Commercial product	Commercial product in a different dosage form
Strength and directions	Per prescriber
Dispensing	Valid prescription

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Phone (909) 378-7301. Fax (909) 378-7071

Clinical Advantages

Liquid dose measured by volume
Strength set by the veterinarian
Alternative to tablets for pets that resist them
Flavor options
Non sterile preparation

How It Works

What is amlodipine?

Amlodipine is a calcium channel blocker. On April 29, 2026, the FDA approved Amodip, an amlodipine besylate chewable tablet from Ceva, for the control of systemic hypertension in cats. The FDA calls it the first FDA approved amlodipine product for veterinary use [1][2].

What is an oral liquid suspension?

An oral liquid suspension is a liquid made of tiny solid medicine particles spread through a liquid base. The medicine is not fully dissolved. The pharmacy makes it to a veterinarian's order, and the dose is measured by volume with an oral syringe.

What is a suspending base?

The base is the liquid vehicle that keeps the particles evenly spread so each dose is consistent. One example is SuspendIt from PCCA. Its manufacturer describes it as an aqueous base that is gluten free, alcohol free, paraben free, and dye free, with a pH of 5 to 6, and preserved with sodium benzoate and potassium sorbate [3]. These are the manufacturer's descriptions.

What compounding in a suspension base provides

A dose measured by volume, so the amount can be set to the individual animal
A strength set by the veterinarian, instead of fixed tablet strengths
A liquid for pets that will not take a tablet
A base chosen without ingredients a particular patient should avoid
Flavoring chosen by the veterinarian and pharmacist
A default beyond use date set by USP 795 for preserved water based liquids, which is 35 days [4]

Amodip labeling information from the FDA states that cats under 2.5 kg cannot be accurately dosed with the 1.25 mg tablet [1].

When veterinarians choose it

General practice and internal medicine veterinarians who need a liquid for an individual pet
Veterinarians whose patients will not take or cannot be dosed accurately with a tablet

Clinical Details

What does the evidence show?

The FDA approved Amodip, an amlodipine chewable tablet, for control of systemic hypertension in cats on April 29, 2026 [1][2].
The FDA states that any compounded animal drug, including compounded amlodipine, is not FDA approved, and that the FDA has not evaluated its safety, effectiveness, or manufacturing [2].
The FDA states that compounding animal drugs from bulk drug substances violates the Federal Food, Drug, and Cosmetic Act, and that compounding from an approved dosage form is permitted under specific conditions [2].

Findings come from the cited studies and do not promise any individual outcome.

Why is it compounded, and how is it typically used?

Why it is compounded

The only FDA approved veterinary amlodipine product is a 1.25 mg chewable tablet for cats [1][2]. A veterinarian who needs a liquid, or a dose that tablet cannot give, may order a compounded preparation.

Dosage forms and strengths

Strength set by the veterinarian
Suspension base chosen with the pharmacist, with flavoring on request
Volumes matched to the prescription

Dosing is the veterinarian's decision.

How Mixwell prepares it

Mixwell compounds these liquids in Chino, California under USP 795 standards for non sterile preparations [4]. Our pharmacist confirms the strength, base, and flavor with the veterinarian, and the source of the amlodipine, before compounding. The pharmacist assigns the beyond use date. Finished liquids ship across California.

Safety information

For Amodip, the FDA advises that veterinarians check blood pressure regularly, monitor kidney and liver values early in treatment, and that owners watch for decreased appetite, vomiting, and diarrhea [1]. Cats under 2.5 kg cannot be accurately dosed with the Amodip tablet [1].

Human amlodipine labeling warns of low blood pressure and lists edema as the most common reaction [5]. Amlodipine is prescription only. The FDA has not evaluated compounded amlodipine for animals [2].

Diagnosis, dosing, and monitoring are the veterinarian's responsibility. Pet owners should talk with their own veterinarian before using any medication.

References

U.S. Food and Drug Administration. FDA approves first veterinary amlodipine product to control systemic hypertension in cats. FDA CVM Update
U.S. Food and Drug Administration. Dear pharmacy professional: letter explaining benefits of using Amodip (amlodipine besylate tablets). FDA
PCCA. SuspendIt suspending base, manufacturer description. Used only to describe the base, not as evidence for any clinical claim.
United States Pharmacopeia. General Chapter 795, Pharmaceutical Compounding: Nonsterile Preparations. USP NF. Official November 1, 2023.
KATERZIA (amlodipine) oral suspension. Prescribing information. DailyMed

What to include on the prescription

APIs and strengths
Base or vehicle
Quantity
Directions for use
Refills
Allergies or dye free needs

Call (909) 378-7301 Fax (909) 378-7071

Compounded in Chino, CA. Delivered across California.

Chino
Chino Hills
Ontario
Pomona
Diamond Bar
Rancho Cucamonga
Eastvale

Mixwell Compounding Pharmacy 13788 Roswell Ave, Ste 158, Chino, CA 91710
(909) 378-7301

Compounded medications are not reviewed or approved by the FDA. Dispensed only with a valid prescription. Mixwell is a non sterile pharmacy and does not prepare sterile products or injectables. Compounded preparations are not presented as superior to commercially available products, and nothing here promises a specific result. Mixwell does not accept insurance. Call for pricing.

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