Updated: January 24, 2026
How to Check If a Pharmacy Has Terrell (Isoflurane) in Stock (Without Calling)
Author
Peter Daggett

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Terrell (isoflurane) isn't a typical retail pharmacy drug. Here's the right way to check availability for this surgical anesthetic and what that really means.
You might be wondering: can I check online to see which pharmacy has Terrell (isoflurane) in stock? The short answer is: not in the traditional sense. Terrell is not a medication dispensed at retail pharmacies. It is a general inhalational anesthetic used exclusively in hospital operating rooms, ambulatory surgical centers, and other procedural settings.
However, if you're a facility supply manager, pharmacy director, or anesthesia team leader, checking Terrell availability is an important task — and there are systematic ways to do it efficiently.
Why You Won't Find Terrell at CVS, Walgreens, or Walmart Pharmacy
Terrell (isoflurane, USP) is classified as a facility-use drug. Here's why it isn't available at retail pharmacies:
- Specialized equipment required: Isoflurane must be delivered through an isoflurane-specific vaporizer and anesthesia machine. No patient can take this home.
- Administration requires trained professionals: An anesthesiologist, CRNA, or anesthesiologist assistant must administer and monitor the patient throughout use.
- Distribution channels are institutional: Terrell is sold through hospital formularies and medical supply distributors, not the retail pharmacy supply chain.
For Facility Managers: How to Check Terrell Availability
If you're responsible for procuring Terrell for your facility, here are the best methods to check real-time availability:
- Check your distributor's online ordering portal. Cardinal Health, McKesson, Medline, and Henry Schein all have web-based ordering systems where you can see current stock status and place orders. Log in to your account and search by NDC code (66794-011-10 for 100 mL or 66794-011-25 for 250 mL).
- Call your distributor's account representative. Account reps can often access real-time warehouse inventory and notify you when stock becomes available.
- Contact Piramal Critical Care directly. As the manufacturer, Piramal has the most accurate and current production and inventory data. Call 1-800-414-1901 or email info@piramalcriticalcare.com.
- Check the FDA and ASHP shortage databases. If a national shortage is declared, both fda.gov and ashp.org will list it with status updates, reasons, and estimated resolution timelines.
- Leverage your GPO's shortage resources. Most Group Purchasing Organizations provide shortage alerts and emergency procurement assistance to member facilities.
For Patients: What You Actually Need to Know
If you're a patient and you've been searching for Terrell at a pharmacy, there's nothing to find there — and that's okay. The availability of Terrell for your surgery is managed entirely by the facility where you'll have your procedure. You don't need to source it yourself.
If you're concerned about the anesthetic your facility plans to use — or if you've been told your surgery might be delayed due to supply issues — the right step is to call your surgeon's office and ask the following:
- "Is the anesthetic for my surgery available at your facility?"
- "Will any changes to the anesthetic plan be communicated to me before my surgery date?"
- "Is there anything I should do to prepare if an alternative anesthetic will be used?"
Finding Other Medications You Need for Surgery
While you can't find Terrell at a retail pharmacy, you may need other prescription medications around your surgery — pain management drugs, antibiotics, or anti-nausea medications. If any of those are hard to find, medfinder can help. Enter your medication, dosage, and location, and we'll call nearby pharmacies and text you which ones have it in stock.
For facility-side sourcing strategies, see: How to find Terrell (isoflurane) in stock near you.
Frequently Asked Questions
No. Terrell is a facility-use anesthetic administered only in hospitals and surgical centers by trained anesthesia professionals. It is not available at retail, specialty, or compounding pharmacies for patient home use.
The NDC codes for Terrell are: 66794-011-10 (100 mL bottle) and 66794-011-25 (250 mL bottle). Facility supply managers can use these codes to search distributor catalogs and ordering systems.
They check their distributor's online ordering portal (Cardinal Health, McKesson, Medline, etc.), contact their account representative, and if needed, reach out directly to the manufacturer Piramal Critical Care at 1-800-414-1901.
Yes, isoflurane is also used in veterinary medicine and can be sourced through veterinary supply distributors (such as Henry Schein Animal Health and Patterson Veterinary). During human shortage periods, veterinary demand can sometimes compete with human-use supply.
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