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

When you prescribe rifampin, you may assume the patient will walk into any pharmacy and fill it within the hour. Unfortunately, that assumption is increasingly unreliable — particularly for rifampin injection, but also for oral capsules in some regions. This guide is for busy clinicians who want practical, actionable steps to help patients navigate the rifampin supply landscape in 2026.

Why Rifampin Access Is a Problem Right Now

As of June 2026, rifampin injection (600 mg/10 mL) is in active shortage — Sanofi's Rifadin IV has been permanently discontinued, and the sole remaining U.S. manufacturer (Viatris/Mylan) is experiencing shipping delays with the next release expected July 2026.

Oral rifampin capsules are not in a formal FDA shortage, but localized stock-outs are common in areas with high TB prevalence or concentrated demand. For patients who are already dealing with the stress of a TB diagnosis, being turned away at a pharmacy is a serious risk factor for treatment abandonment.

Step 1: Set Realistic Expectations at the Prescribing Appointment

Don't send patients out the door with just a prescription. At the point of prescribing:

Tell the patient that rifampin might not be in stock at their nearest pharmacy — this is common and not a reason to panic.

Instruct them to call ahead before driving to a pharmacy.

Emphasize: do not stop medication if supply runs out — contact your office immediately.

Provide your clinic's after-hours contact or TB nurse line for urgent supply issues.

Step 2: E-Prescribe to a Pharmacy You've Confirmed Has Stock

Your office or nursing staff can call ahead to confirm rifampin availability before sending the electronic prescription. This one step eliminates the most common patient frustration — being turned away at the counter.

Alternatively, send the prescription to your local public health TB clinic (see Step 3), where the drug is often available without navigating retail pharmacy networks.

Step 3: Refer to the Local Public Health TB Clinic

This is the most reliable supply solution for TB patients. Most county and city health departments receive rifampin and other TB medications through CDC TB Elimination program funding. These clinics:

Dispense rifampin and combination regimen drugs at no cost to the patient in most cases

Offer Directly Observed Therapy (DOT) to ensure adherence and detect adverse effects early

Have TB nursing staff experienced in managing side effects, drug interactions, and patient education

Can co-manage complex patients with you as the prescribing physician

If you don't have an established referral pathway to your local TB clinic, consider building one proactively — it will serve your practice for years.

Step 4: Use medfinder to Locate Pharmacy Stock for Your Patients

For patients who need to use a retail pharmacy (e.g., for privacy reasons, convenience, or insurance requirements), medfinder is a practical tool your staff can refer patients to. medfinder calls pharmacies near the patient's location on their behalf, finds out which ones can fill the prescription, and texts the results. This eliminates hours of frustrating phone calls and reduces the risk of a patient simply giving up and not filling their prescription.

Consider printing the medfinder URL (medfinder.com) on your after-visit summary or discharge instructions for any patient prescribed rifampin.

Step 5: For Patients Who Need the Injectable — Hospital Pharmacy Coordination

If your patient is hospitalized or needs IV rifampin for any reason:

Work directly with your hospital pharmacy to check wholesaler inventory (McKesson, Cardinal Health, AmerisourceBergen) for available Viatris product.

Consider transition to oral at earliest opportunity — oral capsules have comparable bioavailability in most stable patients.

Consult infectious disease pharmacy for rifabutin dosing if substitution is needed.

Step 6: Document Supply Gaps and Adjust Monitoring

If a patient experiences a supply interruption, document it carefully in the chart along with:

The number of days the patient was without medication

Any clinical changes observed (symptoms, sputum status if applicable)

The decision made (resume same regimen vs. extend duration vs. switch regimen)

ATS/CDC/IDSA guidelines for managing treatment interruptions should guide your decision. Generally, brief interruptions (< 14 days) of an otherwise-compliant patient may not require significant regimen changes, but longer interruptions warrant re-evaluation.

Quick Reference for Your Office Staff

Rifampin injection — in active shortage (IV). Oral capsules available at most pharmacies.

Oral alternative for IV: 2 x 300 mg capsules = 600 mg dose (bioequivalent in most stable patients)

Rifampin substitute: Rifabutin 300 mg/day (for HIV/TB co-infection or rifampin intolerance)

LTBI alternative: 3HP (rifapentine + INH weekly x 12 weeks) or 1HP (daily x 4 weeks)

Patient resource for finding pharmacy stock: medfinder.com

Related Resources

Rifampin shortage: What providers and prescribers need to know in 2026

How to help your patients save money on Rifampin: A provider's guide to savings programs