How Much Does Compounded Cromolyn Cost? (2026 Price Guide)

Cromolyn sodium is one of the most-requested compounds among patients managing mast cell activation syndrome (MCAS), and one where the price gap between the commercial product and a compounded preparation is often the whole reason people start comparing pharmacies.

Here is what compounded cromolyn costs, why it gets compounded at all, and what to check before you fill.

Why cromolyn gets compounded

Oral cromolyn is sold in the U.S. as Gastrocrom, an oral concentrate indicated for mastocytosis. It is a real FDA-approved product, so compounding is not the only route — but three things push patients toward a compounded version:

Dose flexibility. Gastrocrom comes as a fixed-concentration ampule. Patients titrating slowly, or taking doses that do not divide neatly into that concentration, often want capsules at a specific strength instead.

Excipient control. MCAS patients are frequently reactive to dyes, fillers, and preservatives. A compounded capsule can be made with a defined excipient profile; a commercial product cannot be altered.

Cost and supply. Depending on insurance and pharmacy, the commercial oral concentrate can be expensive out of pocket, and availability has not always been reliable.

Your prescriber decides whether a compounded preparation is appropriate. Compounding Finder does not prescribe cromolyn or advise on treatment. FDA notes that compounded drugs are not FDA-approved and are not reviewed for safety, effectiveness, or quality before dispensing — see Compounding and the FDA.

What compounded cromolyn costs

Across active pharmacies on Compounding Finder, compounded cromolyn quotes commonly fall between roughly $50 and $130 for a typical fill, with the median sitting near $75. A small number of larger or higher-strength preparations run considerably above that.

The forms patients actually request, in order of frequency:

• Capsules — the most common request by a wide margin, and generally the most economical.
• Oral liquid or suspension — useful for titration and for patients who cannot take capsules; usually priced above capsules for an equivalent course.
• Topical cream — a much less common request, priced as its own preparation.

Prices vary substantially between pharmacies for the identical strength and count, because ingredient sourcing, batch size, labour, and shipping policy all differ. Comparing several is the single biggest lever you have on the final number.

See current listings on the cromolyn comparison page.

What affects the price

Strength and total quantity. Cromolyn is usually dosed several times daily, so a month's supply is a lot of capsules. Larger counts almost always lower the per-dose cost.

Form. Capsules are the baseline. Liquids add compounding time and packaging.

Excipient requirements. A dye-free, filler-restricted, or hypoallergenic preparation narrows the field of pharmacies that will take it on, and a narrower field usually means a higher price. If you need this, say so on the prescription rather than asking at the counter.

Shipping. Some pharmacies include it, some charge a flat fee, and some apply a minimum order value that changes the real total on a small prescription.

Prescription requirements

Cromolyn is prescription-only. A licensed U.S. compounding pharmacy cannot dispense it without a valid prescription, and any seller offering it without one is not operating legally.

Your prescription should state the strength, the dosage form, the total quantity, and the directions. Excipient restrictions have to be written on it. If you are switching from Gastrocrom, your prescriber will need to specify the compounded equivalent explicitly — the two are not interchangeable at the counter.

Comparing quotes

Compounding Finder sends your prescription details to licensed U.S. compounding pharmacies that can fill them. Quotes come back by email, usually within one to two business days. You choose a pharmacy, or none of them, and pricing is set by the pharmacy directly with you.

Compare compounded cromolyn quotes →

Frequently asked questions

How much does compounded cromolyn cost per month? Most quotes land between roughly $50 and $130 per fill, with a median near $75. Dose frequency matters a lot here — cromolyn is typically taken several times a day, so the monthly total depends heavily on the prescribed schedule.

Is compounded cromolyn cheaper than Gastrocrom? Often, but not always, and it depends entirely on your insurance situation. If Gastrocrom is covered for you, it may well be cheaper. If you are paying cash, compounded capsules are frequently the lower number. Compare both.

Why do MCAS patients use compounded cromolyn? Usually for dose flexibility or excipient control — a defined, dye-free, filler-restricted preparation that a commercial product cannot provide. Whether that is appropriate is a decision for your prescriber.

Do I need a prescription? Yes. Cromolyn is prescription-only in the United States.

Compounding Finder is a price-comparison service, not a pharmacy and not a prescriber. We do not dispense medication or advise on treatment. Compounded drugs are not FDA-approved. Always talk to your prescriber and dispensing pharmacist about whether a compounded preparation is appropriate for you.