Compounded Omeprazole Oral Suspension: A Prescriber's Guide
Omeprazole comes as capsules and as an FDA approved oral suspension in fixed packet strengths. A compounded suspension exists for the patients those forms do not fit, including infants needing weight based volumes.
Why omeprazole needs a suspension at all
Omeprazole is a proton pump inhibitor used to reduce stomach acid production, and the patients who most often need it in liquid form cannot reliably swallow a capsule. That group includes infants, young children, and older adults with swallowing difficulty.
A liquid also allows a dose measured by volume, which matters when the dose is calculated from a patient's weight and changes as they grow.
Crushing or opening a capsule at home is a common workaround and not a good one. It changes how the medication behaves and leaves an uncertain fraction of the dose actually delivered.
What is already approved
An FDA approved omeprazole delayed release oral suspension exists in fixed packet strengths, and it is approved for pediatric use. When an approved packet strength fits the patient, that product is generally the appropriate first choice.
Compounding becomes relevant when the approved packet strengths do not divide cleanly into the prescribed dose, when a specific concentration is needed for accurate small volume dosing, or when an excipient in the commercial product is a problem for the patient.
A compounded suspension is not an improved version of the approved product. It is a different preparation, made because a specific patient need is not met by what is manufactured. That distinction is the honest basis for the whole service.
Who a compounded suspension serves
The common referrals fall into a few recognizable groups, and each has a specific reason a manufactured form does not work.
| Patient group | The problem | What a compounded suspension provides |
|---|---|---|
| Infants and young children | Weight based doses that do not match fixed packet strengths | A concentration that allows an accurate small volume dose |
| Older adults with dysphagia | Difficulty swallowing capsules safely | A measurable liquid instead of a solid dosage form |
| Excipient sensitivity | A reaction to a dye, flavor or other inactive ingredient | Preparation without the specific ingredient where the formulation allows |
| Veterinary patients | Species and weight specific dosing not available commercially | A concentration and flavor suited to the animal, per the veterinarian's prescription |
The acid stability problem
Omeprazole is degraded by acid, which is the central formulation challenge for any liquid form. Manufactured capsules solve this with delayed release granules that protect the drug until it passes the stomach.
A liquid preparation has to solve the same problem a different way. Compounded omeprazole suspensions are typically prepared in an alkaline vehicle that buffers stomach acid, so the drug is protected long enough to be absorbed.
This is why the vehicle in an omeprazole suspension is not interchangeable with the vehicle in other suspensions, and why the formulation should come from a validated source rather than improvised.
Storage and extended beyond use dating
Compounded oral suspensions often carry short beyond use dates, which limits how much can be dispensed at once. That is the general rule, and it is the reason a ninety day prescription for a compounded liquid frequently generates a call back to the office.
A validated formula changes that picture. Mixwell is a PCCA member pharmacy, which gives us access to formulations supported by laboratory stability studies rather than default dating.
Some of those studies are bracketed, meaning a single validated study covers a range of strengths rather than one. For omeprazole oral suspension, these formulations can support beyond use dates of up to 180 days at commonly prescribed concentrations such as 2 mg per mL.
The date assigned to any individual preparation depends on the formula used, the concentration, the container and the storage conditions, and it appears on the prescription label. Patients and caregivers should shake the bottle as directed, store it exactly as the label states, and discard it on the date given rather than continuing with leftover medication.
A longer beyond use date means a longer supply can be dispensed at once, which means fewer refill visits for a family already managing a child's medication schedule. Call before writing so we can confirm which formula and which beyond use date apply to the concentration you want.
A note on infant reflux
Acid suppressing medications are frequently prescribed for infant irritability attributed to reflux, and randomized trials have generally not shown a benefit over placebo for that presentation. Pediatric gastroenterology guidance cautions against routine use in otherwise healthy infants with uncomplicated regurgitation.
Visible spitting up in a thriving infant is usually developmental and resolves with time. That is a different situation from confirmed gastroesophageal reflux disease with complications, where acid suppression has a clearer role.
This pharmacy prepares what is prescribed and does not make that clinical distinction. Raising it here is simply the honest version of a page about a pediatric suspension.
Safety information worth knowing
Changing the dosage form does not change the drug, and the cautions that apply to omeprazole in a capsule apply to a suspension.
FDA has issued safety communications regarding long term proton pump inhibitor use, including a possible association with fractures of the hip, wrist and spine, low blood magnesium with prolonged use, and an increased risk of Clostridioides difficile associated diarrhea. Vitamin B12 status is also a consideration with extended therapy. Stopping abruptly after prolonged use can be followed by a temporary increase in acid symptoms. Prescribers assess the need for continued therapy and the appropriate duration. Do not stop or change a dose without speaking with the prescriber.
Interactions worth flagging
Omeprazole affects the absorption of medications that depend on stomach acid and interacts with several drugs through hepatic metabolism, including clopidogrel. Tell the prescriber about all current medications and supplements before starting.
What compounding adds and what it does not
What compounding can do
- Prepare the concentration the prescription specifies
- Support weight based dosing that changes as a child grows
- Leave out an excipient the patient reacts to, where the formulation allows
- Use a validated formula that supports an extended beyond use date
What it does not mean
- That the preparation is FDA approved
- That it works better than the approved suspension or capsule
- That it is gentler because it is a liquid
- That every compounded suspension carries an extended beyond use date
Need a concentration matched to a weight based dose?
Call (909) 378-7301Sending a prescription to Mixwell
Note the concentration with units, the total volume, the flavor preference and the directions on a patient specific prescription. Add the patient weight for pediatric prescriptions, and the species and weight for veterinary patients.
- Specify the concentration in milligrams per milliliter, the total volume and the dosing directions.
- Fax or e prescribe to Mixwell Compounding Pharmacy in Chino, CA.
- Call (909) 378-7301 to confirm the achievable beyond use date before writing a long supply.
Omeprazole oral suspension, concentration in mg per mL as specified, total volume, flavor preference, directions with dose and frequency, and patient weight.
- Pharmacy
- Mixwell Compounding Pharmacy
- Address
- 13788 Roswell Ave, Ste 158, Chino, CA 91710
- Phone
- (909) 378-7301
- Fax
- (909) 378-7071
- info@mixwellpharmacy.com
The wording above is a formatting example only. All clinical parameters are determined by the prescriber.
Serving prescribers and patients in California
Mixwell Compounding Pharmacy is located in Chino, CA and works with pediatric, gastroenterology and primary care prescribers across the Inland Empire, Los Angeles County and Orange County. Patients can collect their preparation at the Chino pharmacy, and delivery is available across California.
- Chino
- Chino Hills
- Ontario
- Rancho Cucamonga
- Upland
- Pomona
- Diamond Bar
- Corona
- Riverside
- Eastvale
- Brea
- Fullerton
Common questions
Is there already an FDA approved omeprazole liquid?
Yes. An FDA approved omeprazole delayed release oral suspension is available in fixed packet strengths and is approved for pediatric use. When an approved strength fits the patient, that product is generally the appropriate first choice. Compounding is for doses, concentrations or administration needs the packets do not cover.
How long is a compounded omeprazole suspension good for?
It depends on the formula used. Many compounded oral suspensions carry short beyond use dates. Mixwell is a PCCA member pharmacy with access to formulations supported by bracketed laboratory stability studies, which can support beyond use dates of up to 180 days at commonly prescribed concentrations such as 2 mg per mL. The date assigned to your preparation appears on the label. Store it exactly as the label directs and discard it on that date.
Can I crush a capsule instead?
Talk to your prescriber or pharmacist first. Omeprazole capsules contain delayed release granules designed to protect the drug from stomach acid, and crushing them can change how the medication works and how much of the dose is delivered.
Is a liquid gentler on the stomach than a capsule?
No. Changing the dosage form does not change the drug. The same cautions that apply to omeprazole in a capsule, including considerations around long term use, apply to a suspension.
Should I talk to my provider before starting?
Yes. FDA recommends that patients talk with their health care professional about their specific circumstances before taking any medication, including compounded preparations.
Does Mixwell accept insurance?
Mixwell does not accept insurance. Call (909) 378-7301 to discuss current pricing.
Key Takeaways
- An FDA approved omeprazole oral suspension exists in fixed packet strengths, and it is generally the appropriate first choice when a packet strength fits the patient.
- A compounded suspension serves patients whose dose, concentration or route of administration is not covered by manufactured forms, and infants on weight based dosing.
- Omeprazole is degraded by acid, so the vehicle in a suspension is doing real formulation work and is not interchangeable with other suspension bases.
- Compounded oral suspensions often carry short beyond use dates, but validated PCCA formulations supported by bracketed stability studies can support beyond use dates of up to 180 days for omeprazole suspension at commonly prescribed concentrations.
- Compounded preparations are not FDA approved and require a valid prescription from a licensed prescriber.
Sources
- U.S. Food and Drug Administration. Omeprazole delayed release capsules and omeprazole for delayed release oral suspension, prescribing information.
- U.S. Food and Drug Administration. Drug Safety Communications on proton pump inhibitors, including fracture risk, low serum magnesium and Clostridioides difficile associated diarrhea.
- Rosen R, Vandenplas Y, Singendonk M, et al. Pediatric gastroesophageal reflux clinical practice guidelines: joint recommendations of NASPGHAN and ESPGHAN. Journal of Pediatric Gastroenterology and Nutrition. 2018;66(3):516-554.
- United States Pharmacopeia. General Chapter 795, Pharmaceutical Compounding, Nonsterile Preparations.
- Professional Compounding Centers of America. Formulation stability study protocols and bracketed beyond use dating. Formula specific characteristics per manufacturer technical documentation.
- U.S. Food and Drug Administration. Compounding and the FD&C Act, Section 503A.