A provider's guide to helping patients find Amoxicillin/Clarithromycin/Lansoprazole (Prevpac) in stock, with prescribing tips and workflow strategies.
You've diagnosed H. pylori, prescribed the Amoxicillin/Clarithromycin/Lansoprazole triple therapy, and moved on to the next patient. Then your office gets a call: the patient's pharmacy doesn't have it in stock. Or the prior authorization was denied. Or the cash price is $800 and the patient can't afford it.
These scenarios have become increasingly common. While the Prevpac combination kit isn't in a formal FDA shortage, its practical availability at retail pharmacies has declined significantly. This guide provides actionable steps to reduce prescription fulfillment failures and get your H. pylori patients started on treatment without delays.
As of 2026, the pre-packaged Amoxicillin/Clarithromycin/Lansoprazole combination kit (generic Prevpac) is:
Meanwhile, the three individual components — Lansoprazole 30 mg, Amoxicillin 500 mg, and Clarithromycin 500 mg — remain widely stocked at all pharmacies.
Understanding the root causes helps you anticipate and solve the problem before it reaches the patient:
Retail pharmacies manage thousands of medications and allocate shelf space based on dispensing volume. The Prevpac combination kit is dispensed infrequently compared to common chronic disease medications, so many pharmacies have removed it from their standard inventory.
Some insurance plans treat the combination kit as a branded specialty product even when it's a generic, triggering prior authorization requirements. This can delay fulfillment by 2-5 business days — unacceptable when the patient needs to start antibiotic therapy promptly.
Patients without insurance or with high deductibles face a cash price of $600-$900 for the combination kit. Many abandon the prescription at the pharmacy counter. The individual components total just $30-$50 with discount coupons, but patients don't know this unless they're told.
As prescribing patterns shift toward alternative H. pylori regimens, pharmacies stock less Clarithromycin overall. Some smaller pharmacies may need to order it, adding another day or two to the process.
Unless there's a specific reason to prescribe the combination kit, write three separate prescriptions:
This eliminates the availability and prior authorization issues associated with the combination kit. It also reduces costs dramatically for cash-pay patients.
Use Medfinder for Providers to check which pharmacies in the patient's area have the medication in stock. This takes 30 seconds and prevents the frustrating cycle of rejected prescriptions and patient callbacks.
When prescribing individual components, patients may not understand how to take three separate medications together. Include clear written instructions:
Sample patient instructions:
Mention to patients that discount coupons from GoodRx or SingleCare can reduce the cost of the individual generics to under $50 total. For patients with financial hardship, patient assistance programs through NeedyMeds and RxAssist may help. Direct patients to our savings guide for detailed information.
If the patient has a Penicillin allergy (which rules out Amoxicillin) or if Clarithromycin resistance is a concern, have an alternative regimen ready to prescribe without requiring a second visit. Common alternatives include:
For a detailed comparison of alternatives, see our alternatives guide.
Create an H. pylori treatment order set in your EHR that defaults to the three individual prescriptions with correct quantities and dosing. Include patient education handouts and a link to Medfinder for pharmacy availability.
When patients call saying their pharmacy doesn't have the medication, your staff should know to:
H. pylori eradication requires the full course. Consider a 2-week follow-up call or message to confirm the patient completed all medications. A 4-week post-treatment follow-up for confirmation testing (stool antigen or urea breath test) is also recommended per guidelines.
The most common reason H. pylori treatment fails isn't drug resistance — it's patients who never start treatment because they couldn't find or afford the medication. By prescribing individual components, checking availability proactively, and equipping patients with cost-saving resources, you can significantly improve treatment initiation rates.
Visit Medfinder for Providers to integrate real-time pharmacy availability into your workflow. For the patient perspective, share our guide to finding this medication in stock or our 2026 shortage update.
You focus on staying healthy. We'll handle the rest.
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