How to Help Your Patients Find Amitiza in Stock: A Provider's Guide

Your Patients Need Amitiza — Here's How to Help Them Get It

You've prescribed Lubiprostone for a patient's chronic constipation, and they call back a few days later: "My pharmacy doesn't have it." It's a scenario that's becoming increasingly common. While Amitiza (Lubiprostone) is not in a formal shortage, pharmacy-level availability gaps mean your patients may need extra support to fill their prescriptions.

This guide provides practical, actionable steps you can incorporate into your prescribing workflow to help patients access Lubiprostone — or transition to an appropriate alternative when needed.

Current Availability Landscape

As of 2026, the Lubiprostone market includes both brand-name Amitiza and generic formulations following patent expiration in 2024-2025. Key availability facts:

• Not in official shortage: Lubiprostone is not listed on the FDA drug shortage database
• Generic available: Generic Lubiprostone (8 mcg and 24 mcg capsules) is on the market from a limited number of manufacturers
• Variable stocking: Chain pharmacies stock based on local demand — Lubiprostone is a relatively low-volume medication compared to blockbuster drugs
• Regional variation: Availability can differ significantly by geography and wholesaler network

Why Patients Can't Find It

Understanding the root causes helps you address the problem more effectively:

1. Limited Generic Manufacturer Base

Unlike high-volume generics with dozens of manufacturers, generic Lubiprostone has a small production base. A single manufacturer's supply disruption can create widespread pharmacy-level stock gaps.

2. Pharmacy Inventory Management

Most pharmacies use automated inventory systems that order based on recent dispensing volume. If a pharmacy hasn't filled a Lubiprostone prescription recently, it may not have any in stock. This creates a catch-22: the drug isn't stocked because it's rarely requested, and it's rarely requested because it's not stocked.

3. Insurance-Driven Delays

Prior authorization requirements and step therapy mandates delay treatment initiation, sometimes by days or weeks. Patients may interpret these administrative delays as shortage-related unavailability.

4. Brand vs. Generic Mismatch

Some prescriptions specify brand-only Amitiza while the pharmacy stocks only generic, or vice versa. Ensuring your prescription allows generic substitution (where clinically appropriate) removes this barrier.

What Providers Can Do: 5 Practical Steps

Step 1: Prescribe Generically

Write prescriptions for "Lubiprostone" rather than "Amitiza" and ensure the "dispense as written" box is not checked unless clinically necessary. This allows pharmacies to fill with whatever formulation they have in stock — brand or generic.

Step 2: Check Availability at Point of Prescribing

Use Medfinder for Providers to check real-time pharmacy stock before your patient leaves the office. This takes seconds and prevents the frustrating experience of patients being turned away at the pharmacy counter.

You can also direct patients to check stock themselves at medfinder.com.

Step 3: Proactively Complete Prior Authorization

Many payers require prior authorization for Lubiprostone. Proactive strategies include:

• Documenting OTC laxative trials (polyethylene glycol, docusate) in the chart before prescribing
• Submitting prior authorization at the same time as the e-prescription
• Using electronic prior authorization (ePA) tools integrated into your EHR
• Including diagnosis codes (K59.00 for CIC, K58.1 for IBS-C, K59.09 for OIC) on the prescription

Step 4: Recommend Independent and Mail-Order Pharmacies

When chain pharmacies don't have stock, recommend:

• Independent pharmacies: Often have multiple wholesaler relationships and can special-order within 1-2 business days
• Mail-order pharmacies: Better inventory management for maintenance medications; many plans offer 90-day supplies
• Specialty pharmacies: Particularly useful for patients on complex regimens or those needing OIC management alongside pain management

Step 5: Have Samples or Bridge Plans Ready

Keep Lubiprostone samples in your office (if available from the manufacturer) to bridge patients while their prescription is being filled. If samples aren't available, have a plan ready:

• Short-term OTC bridge: polyethylene glycol (MiraLAX) 17g daily
• Document the bridge therapy in the chart
• Set a follow-up to confirm the patient successfully filled their Lubiprostone prescription

Alternative Medications When Lubiprostone Is Unavailable

If extended unavailability makes Lubiprostone impractical, consider these evidence-based alternatives:

For CIC and IBS-C:

• Linzess (Linaclotide): 145 mcg or 290 mcg once daily for CIC; 290 mcg for IBS-C. GC-C agonist with demonstrated pain reduction in IBS-C. Take on empty stomach 30 min before first meal.
• Trulance (Plecanatide): 3 mg once daily for CIC and IBS-C. GC-C agonist that can be taken with or without food. May have a more favorable GI tolerability profile for some patients.
• Motegrity (Prucalopride): 2 mg once daily for CIC. 5-HT4 agonist with a prokinetic mechanism — useful when secretagogues have been insufficient.

For OIC:

• Movantik (Naloxegol): 25 mg once daily. PAMORA — blocks peripheral opioid receptors without affecting analgesia.
• Symproic (Naldemedine): 0.2 mg once daily. Another PAMORA option with once-daily dosing.
• Relistor (Methylnaltrexone): Available as oral tablet (450 mg daily) or subcutaneous injection. Typically reserved for patients who haven't responded to oral PAMORAs.

For a patient-friendly comparison: Alternatives to Amitiza.

Workflow Tips for Your Practice

Consider incorporating these into your standard prescribing workflow for Lubiprostone:

1. At prescribing: Check availability on Medfinder for Providers and direct the patient to a pharmacy with confirmed stock
2. Submit ePA simultaneously with the e-prescription to minimize delays
3. Set a 1-week follow-up task to confirm the patient successfully filled the prescription
4. Document alternatives in the chart proactively, so if a switch is needed, you can act quickly
5. Educate patients about using Medfinder for future refills — empowering them to self-serve reduces callback burden on your practice

Final Thoughts

Helping patients access Lubiprostone requires a proactive approach that extends beyond writing a prescription. By prescribing generically, checking availability at point of care with Medfinder for Providers, streamlining prior authorization, and maintaining a ready list of alternatives, you can ensure continuity of care even when pharmacy stock is inconsistent. Your patients are counting on you to help them navigate this landscape — these tools and strategies make that easier.