4. Pfizer Inc. (NYSE:PFE)
Pfizer Inc. (NYSE:PFE) is among the companies that sell Naloxone Hydrochloride injections. Naloxone was approved by the FDA in 1971 and is used in cases of drug overdose, often being administered as a first responder drug. Recently, Pfizer Inc. (NYSE:PFE) and other companies that sell Naloxone came under fire from the US Senate over price hikes of Naloxone, but the company also donates up to 250,000 doses a year. Mylan N.V. (NASDAQ:MYL) also launched injectable Naloxone in 2014 and Adapt Pharma is marketing nasal spray formulation of naloxone under the Narcan brand.