Mesalamine is the same molecule in every product that carries the name. What you are actually buying is a delivery system: a coating, a matrix or a granule designed to release 5-aminosalicylic acid in a particular stretch of bowel. That engineering, not the drug, is what the price is attached to.
The result is a spread almost nobody expects. On September 3, 2026, the same 180 tablets of 800 mg mesalamine cost $97.39 at one pharmacy and $1,775.47 at retail under the Asacol HD label. Below are cash prices, federal acquisition costs effective August 19, 2026, and 2024 Medicare Part D averages for every oral and rectal form.
What Does Mesalamine Cost Without Insurance?
Columns in the table mean different things by design, because no single source prices every form. Low is the cheapest route found, either a Cost Plus Drugs price or the CMS acquisition cost. Average is the Drugs.com retail cash price for the generic. High is the brand, and where it is marked “Part D” it is the 2024 Medicare average per prescription fill rather than a cash price, because those brands publish no cash figure we could verify.
| Product (quantity) | Low | Average | High (brand) |
|---|---|---|---|
| Mesalamine ER 0.375 g capsule, 120 (Apriso) | $58.38 (acquisition) | $166.90 | $820.21 (Part D) |
| Mesalamine DR 1.2 g tablet, 120 (Lialda) | $95.44 (acquisition) | $314.72 | $1,624.44 (Part D) |
| Mesalamine DR 800 mg tablet, 180 (Asacol HD) | $97.39 (Cost Plus) | $510.79 | $1,775.47 (cash) |
| Mesalamine DR 400 mg capsule, 180 (Delzicol) | $248.82 | $461.66 (acquisition) | $1,102.66 (Part D) |
| Mesalamine ER 250 mg capsule, 240 (Pentasa) | $581.65 | $696.60 (brand acquisition) | $1,357.69 (Part D) |
| Mesalamine 1,000 mg suppository, 30 (Canasa) | $27.63 (Cost Plus) | $124.38 | $1,429.53 (Part D) |
| Mesalamine 4 g enema, 7 bottles (Rowasa) | $31.05 (Cost Plus) | $73.85 | $2,589.97 (Part D) |
Two rows deserve a flag. The 400 mg delayed-release capsule is the one product where sources disagree in the wrong direction: CMS puts pharmacy acquisition cost at $2.56479 per capsule, which is $461.66 for 180, while Drugs.com quotes a $248.82 cash price for the same 180 capsules. Published cash below published acquisition cost usually means the acquisition survey is running behind a falling generic, so treat anything between roughly $250 and $460 as the honest range there.
Treat the Rowasa figure with care as well. It is a real CMS number, but it rests on only 17 Medicare fills in 2024, against 22,117 for Pentasa and 6,392 for Apriso. The direction is right and the precision is not.
The Pentasa row is the only one with no generic in the federal file. Retail generic 250 mg capsules are $581.65 for 240 and generic 500 mg capsules are $558.69 to $581.65 for 120, while brand Pentasa cost pharmacies $2.90250 and $5.82575 per capsule respectively over the same period.
What Drives the Price
The delivery system, by a factor of about 10. In 2024 Medicare data, generic extended-release capsules averaged $289.77 per fill and generic delayed-release products $458.59, while brand Lialda averaged $1,624.44 and brand Rowasa $2,589.97. All of it is mesalamine. Only the release mechanism differs.
Brand versus generic within each delivery system. This is the largest single lever. Brand Lialda cost pharmacies $8.94947 per 1.2 g tablet in August 2026 against $0.79534 for the generic, an 11-fold gap. Brand Canasa cost $37.09004 per suppository against $1.28670 for the generic, a 29-fold gap. Brand Pentasa cost $5.82575 per 500 mg capsule against a retail generic price of $4.66 to $4.85.
How many units a day the form requires. A 0.375 g capsule and a 1.2 g tablet are not comparable per unit. The pack sizes the sellers themselves treat as a month tell you more: 120 capsules for the extended-release 0.375 g, 180 tablets for the 800 mg, 240 capsules for the 250 mg Pentasa form. Multiply the unit price by that count, not by 30.
Oral versus rectal. Rectal mesalamine looks expensive per unit and is cheap per course, because a course is measured in weeks rather than years. Generic enemas were $0.09744 to $0.17890 per milliliter in the August 2026 acquisition file, which is $5.85 to $10.73 per 60 mL bottle. Cost Plus Drugs sells seven of those bottles for $31.05.
Whether the manufacturer is still in the market. FDA’s shortage database recorded on August 25, 2026 that Mylan is discontinuing its 0.375 g mesalamine extended-release capsule. Ten labelers reported that form in 2024 Medicare data with per-fill averages from $111.06 to $948.63, so a departure will not create a shortage, but it does thin the price floor.
Cash Price vs. Insurance
Mesalamine is one of the clearest cases in the pharmacy where a cash payer can beat an insured patient outright. The insured price of a brand-name 5-ASA is a specialty-tier copay plus a prior authorization; the cash price of the identical generic is under $100 a month at a transparent pharmacy.
The gap between what a pharmacy pays and what a walk-in cash patient is charged is also unusually wide here, which is exactly the condition where shopping pays. Generic 1.2 g tablets cost pharmacies $0.79534 each and retail for $2.62 to $2.93 each on Drugs.com, roughly a 3.5-fold markup. Cost Plus Drugs prices the 800 mg tablet at $97.39 for 180 against its own posted $245.10 retail comparison.
The reverse trap is asking your prescriber for a brand by name. Lialda, Asacol HD, Apriso and Pentasa are all recognizable, all heavily marketed and all priced at multiples of their generic equivalents, from roughly three times on a like-for-like retail comparison to eighteen times when the generic is bought from a transparent mail pharmacy. If you are paying cash, the words that matter on the prescription are the strength and the release type, not the brand.
How to Pay Less
Ask for the generic by delivery system, not by brand. A prescription written as “mesalamine DR 800 mg” fills for $97.39 at a transparent mail pharmacy. The same therapy written as “Asacol HD” is $1,775.47 for the same 180 tablets on Drugs.com. Your prescriber has to make the clinical call about which release profile you need, but once that is settled, the brand name is optional and expensive.
Price a transparent mail pharmacy before a retail counter. Cost Plus Drugs beat the Drugs.com retail cash price on every form it stocks: $97.39 against $510.79 on the 800 mg tablet, $27.63 against $124.38 on the suppository, and $31.05 against $73.85 on the seven-bottle enema carton. Shipping is charged per order, so a 90-day fill spreads that fee further. For how discount cards compare with transparent-pricing pharmacies on drugs like this, see our discount card comparison.
Buy the larger pack. Generic 400 mg capsules are $1.83 each in a 20-count and $1.38 each in a 180-count on Drugs.com. Generic enemas are $0.18 per milliliter in a 7-bottle carton and $0.17 in a 28-bottle carton. The savings are modest but they compound over a maintenance drug you take indefinitely.
Separate the drug bill from the monitoring bill. Maintenance 5-ASA therapy comes with periodic labs and scopes, and those are usually the larger number. Check colonoscopy costs without insurance and endoscopy costs before scheduling, and use a sliding-scale or federally qualified clinic for routine follow-up if you are uninsured.
Handle the facility bills separately from the pharmacy bills. If a flare puts you in a hospital, the pharmacy strategy above does nothing for the facility bill. Our guide to negotiating medical bills and the hospital charity care walkthrough cover that side.
The Bottom Line
Mesalamine is cheap if you buy it as a generic and expensive if you buy it as a brand, and the size of that difference is unusual even by U.S. drug pricing standards. A cash payer on generic oral mesalamine should expect to pay somewhere between $97 and $582 a month depending on the release form, and should be suspicious of any quote above that. Rectal forms are cheaper than their reputation, with a full carton of generic enemas under $35. For the other drugs in this cluster, see budesonide costs, prednisone costs and Creon costs.