Omeprazole/Sodium Bicarbonate Shortage: What Providers and Prescribers Need to Know in 2026

Omeprazole/sodium bicarbonate (Zegerid, Konvomep) occupies a specific clinical niche: it is the only immediate-release oral proton pump inhibitor (PPI) with FDA approval for reducing upper gastrointestinal bleeding risk in critically ill patients. For most outpatient prescribers, the relevant challenge in 2026 is not a formal shortage but a practical availability problem — patients can't find it at their local pharmacy.

This guide summarizes what prescribers need to know about omeprazole/sodium bicarbonate availability, clinical substitution options, formulary considerations, and how to counsel patients who are struggling to fill their prescriptions.

Current Availability Status (2026)

As of 2026, oral omeprazole/sodium bicarbonate is not listed on the FDA's current drug shortage database. Generic manufacturers (Zydus, Dr. Reddy's, Cipla) continue to produce the product, and Konvomep oral suspension (from Salix Pharmaceuticals) remains available.

However, real-world dispensing is inconsistent. Key availability issues by formulation:

• Generic capsules (20 mg, 40 mg): Available but not routinely stocked at many retail pharmacies; special ordering typically required
• Brand Zegerid capsules: Available but retail price exceeds $1,200 for 30 capsules; not covered by most Medicare or commercial plans
• Powder for oral suspension (Zegerid packets): Limited retail availability; hospital and specialty pharmacy sourcing recommended
• Konvomep oral suspension: Specialty pharmacy distribution; not a standard retail pharmacy item

Note on Injectable Sodium Bicarbonate Shortage

Prescribers should distinguish between oral omeprazole/sodium bicarbonate products and injectable sodium bicarbonate, which has experienced recurring shortages since 2017 (tracked by ASHP, with updates ongoing into 2026). The injectable form is used separately for metabolic acidosis, cardiac arrest, and urine alkalinization — and is sometimes used by compounding pharmacies as a base for extemporaneous omeprazole suspensions. Compounding pharmacies experiencing injectable sodium bicarbonate shortages may substitute sodium bicarbonate powder or tablets for suspension preparation, which does not affect the commercially manufactured Zegerid products.

Clinical Indications Unique to Omeprazole/Sodium Bicarbonate

Before substituting, confirm whether the patient has a condition that specifically requires the immediate-release formulation:

• Reduction of upper GI bleeding risk in critically ill patients: Only the 40 mg Zegerid oral suspension has this FDA indication. The dosing regimen is 40 mg initially, then 40 mg 6-8 hours later, then 40 mg daily for 14 days. IV PPIs or alternative protocols may be needed if the suspension cannot be obtained.
• NG/OG tube administration: Both Zegerid powder for suspension and Konvomep are specifically designed for tube administration. Alternatives such as lansoprazole orally disintegrating tablets dissolved in water are sometimes used off-label.
• Immediate-release pharmacokinetics: Zegerid achieves peak plasma concentration faster than enteric-coated omeprazole. For patients requiring rapid acid suppression onset, this formulation may be clinically preferred.

Therapeutic Substitution Options

For most outpatient GERD, ulcer, and erosive esophagitis indications, any PPI at an equivalent dose is an acceptable therapeutic substitute. Recommended alternatives in order of clinical preference:

1. Pantoprazole (Protonix): Preferred for patients on clopidogrel, anticoagulants, or polypharmacy due to minimal CYP2C19 interaction. Widely stocked. Generic Tier 1-2 on most formularies.
2. Esomeprazole (Nexium): Slightly longer half-life than omeprazole; similar interaction profile. Generic covered by most plans.
3. Lansoprazole (Prevacid): Available OTC and by prescription; orally disintegrating tablets useful for NG-tube patients. Generic covered by most plans.
4. Omeprazole (Prilosec): Identical active ingredient; enteric-coated delayed-release. Very low cost. Has the same clopidogrel CYP2C19 interaction as Zegerid.

Drug Interaction Cautions for All PPIs

Regardless of which PPI you use, be aware of clinically significant interactions:

• Clopidogrel (Plavix): Omeprazole and esomeprazole inhibit CYP2C19 activation of clopidogrel. Prefer pantoprazole or rabeprazole.
• Rilpivirine (HIV antiretroviral): All PPIs are contraindicated with rilpivirine-containing regimens (Edurant, Juluca, Complera, Odefsey) due to significantly reduced drug levels.
• Methotrexate: All PPIs may elevate methotrexate and hydroxymethotrexate levels; use with caution in oncology patients.
• Sodium content (specific to Zegerid): Each Zegerid capsule contains 304 mg sodium; each suspension packet contains 460 mg sodium. Counsel patients on low-sodium diets or with heart failure, hypertension, or renal impairment.

Formulary and Prior Authorization Notes

Most commercial and Medicare Part D formularies do not cover brand Zegerid. Generic omeprazole/sodium bicarbonate, if covered, is often Tier 3 or higher and may require prior authorization documenting step therapy (failure of standard omeprazole or another PPI). If your patient needs Zegerid specifically, prepare for a prior auth process.

How to Help Patients Find It

When a patient cannot find their omeprazole/sodium bicarbonate prescription at their regular pharmacy, recommend medfinder for providers. medfinder calls pharmacies on the patient's behalf to identify which ones have the medication in stock, texting results directly to the patient. This reduces patient frustration and follow-up calls to your office about unfilled prescriptions.

Patient Counseling Points

When prescribing omeprazole/sodium bicarbonate, counsel patients on the following:

• Take on an empty stomach, at least 1 hour before a meal
• Swallow capsules whole with water only — do not open, crush, or chew
• High sodium content — flag for patients on sodium-restricted diets
• If the pharmacy doesn't stock it, ask for a special order or use medfinder to find a pharmacy that does
• Generic discount coupons (GoodRx, SingleCare) can reduce the cost to $28-$36 for 30 capsules

Additional Resources

See our companion guide: How to help your patients find omeprazole/sodium bicarbonate in stock — a practical resource you can share with patients at checkout or send via patient portal.