On March 12, 2024, Par Pharmaceutical issued a voluntary recall of one lot of Treprostinil Injection 20mg/20mL (1mg/mL) vials, a medication used to treat pulmonary hypertension, due to the potential presence of silicone particulates in the product solution. Administration of this solution may result in local irritation or swelling in response to the particulates. If the particulates reach the blood vessels, they can cause a block in the vessels of the heart, lungs or brain which can lead to stroke and even death. The recalled product is associated with multidose vials with Lot#57014 and expiration date of April 2024, and it was distributed to wholesalers and hospitals nationwide. The company is providing written notification to hospitals and wholesalers, instructing them to withdraw any stock of the affected lot from shelves immediately, to return any of these vials and to notify any recipients of the affected product. There have been no adverse events related to this recall to date, but patients should contact their health care provider if any problems arise from use of this product. Adverse effects should also be reported to the FDA’s MedWatch Safety Information and Adverse Event Reporting Program.