The following alerts and photos show how look-alike drug vials and packaging can contribute to medication errors and impact patient safety.
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Latest Alerts
Ondansetron, Dexmedetomidine, Lidocaine
April 4, 2025
These 3 look-alike vials were sent to me in my role with QI & safety by one of our pharmacists so that our team would be aware. After he sent the photo, another team member said that someone had taken out a vial of diphenhydramine (not pictured) that they thought was concentrated Dexmedetomidine. Thankfully that was caught before administration.
Submitted by
Cathie Jones, MD
Boston Children’s Hospital
Hydralazine, Ondansetron
April 2, 2025
Hydralazine accidentally stocked in Zofran bin; lookalike.

Hydralazine, Ondansetron
Submitted by
Eric Fleck, CRNA
Tranexamic Acid, Bupivacaine, Neostigmine Methylsulfate
February 20, 2025
This photo highlights how vials of Tranexamic Acid 1000mg/10mL and Bupivacaine 0.5% 50mg/10mL look very similar. Both of these medications having yellow caps could easily cause a stocking error in a drug tray or automated dispensing cabinet leading to a potentially fatal drug error. Both vials are often out and used during orthopedic cases, therefore, these two look alike vials pose an incredibly high risk of a swapping error. The FDA is currently conducting a safety evaluation and is investigating the issue of tranexamic acid injection being erroneously administered intrathecally instead of the intended intrathecal (spinal) anesthetic (e.g., bupivacaine injection) for neuraxial anesthesia.
Here is an example of two 10mL vials with white and blue labels and blue top caps. One medication is used for neuromuscular blockade reversal and the other is a local anesthetic. These two vials could easily be swapped. Caution must always be taken to read vial labels in their entirety when administering medications to prevent drug errors.
Submitted by
Jonathan Markley, DO
St. Joseph’s University Medical Center
Phenylephrine, Hydralazine
February 13, 2025
Phenylephrine 20mg/ml vial and Hydralazine 10mg/ml vial.
Submitted by
Kera Anderson
Propofol, Omegaven
December 19, 2024
Can be confused with propofol in stocking. Omegaven: Most common adverse drug reactions (>15%) are: vomiting, agitation, bradycardia, apnea and viral infection. Not a general anesthetic drug.
Submitted by
Richard J. Pollard, MD, FASA
Beth Israel Deaconess Medical Center, Boston, MA
Sterile Water for Injection USP 1000ml, Lactated Ringer’s Injection USP 1000ml
October 30, 2024
Sterile Water for Injection USP 1000ml vs Lactated Ringer’s Injection USP 1000ml – both bags are manufactured by Braun
Submitted by
Caitlin Houtchens
Cross Timbers Surgery Center
Searchable Look-Alike Drug Vials Gallery
APSF Articles and Media
APSF Newsletter Articles
- Important Medication Errors and Hazards Reported to the ISMP National Medication Errors Reporting Program During 2020
- Letter to the Editor: Medication Error Related to Look-Alike Prefilled Syringes
- Letter to the Editor: Should Medication Labels be Color-Coded?
- RAPID Response: “No Read” Errors Related to Prefilled Syringes
- The Call for Standardizing Safer Drug Labeling Methods
- Pro/Con Debate: Color-Coded Medication Labels
PRO: Color-Coded Medication Labels Improve Patient Safety
CON: Anesthesia Drugs Should NOT Be Color-Coded
APSF Podcasts
- Episode #54 Medication Safety and Look-alike Vials
- Episode #55 Be on the Look-out for Look-alike Vials
APSF Videos