But the life-saving drug has also had to be rationed in some places as the price increases and demand soars. So the city health commissioner in Baltimore, Dr. Leana Wen, took the extraordinary step of issuing a standing-order prescription for all city residents, resulting in increased access to naloxone by allowing pharmacies to dispense it without a personal doctor's prescription.
"We in Baltimore have launched aggressive overdose campaign," Wen told ABC News.
In 2014, the most recent year for which U.S. data is available, 10,574 people died, compared with 3,036 four years earlier.
Baltimore’s Wen said the drug, a nasal spray, has saved at least 400 lives since the city increased access to it nearly a year ago. "This is an intervention that is safe and effective, and it's immediately life-saving,” she said.
The city’s overall expenditure on the drug has tripled recently, Wen said, putting pressure on first responders and outreach workers. She said the city has to decide which health workers and police officers are more likely to encounter an opioid overdose and give them the drug to distribute.
"In May 2014, a 10-dose pack cost the Baltimore City Health Department roughly $190," Cummings said in a released statement in March. "Guess what? Today, it costs more than $400 for a life-saving drug.”
Amphastar President Jason Shandell said the price for its generic naloxone last increased in 2014 and was because of a variety of reasons, including increased manufacturing, spending on research and development, and increased spending on the factory where the medication is produced to increase capacity and modernize the facility.
"When considering any price change, Amphastar always strives to meet the goal of providing safe and effective drug products at an affordable price," Shandell wrote in an email to ABC News. "It should be noted that after our last price change in October 2014, our naloxone injection price is still the lowest among four (4) other similar naloxone injection products when considering the price per milligram of naloxone."
The pharmaceutical company Kaleo, which produces EVZIO, released a statement saying it is "dedicated to ensuring" people who need the drug are able to access it and that they have donated kits to Baltimore.
“We are extremely proud that, in addition to every day Americans, EVZIO is also able to help first responders and public health departments rescue people suffering from opioid emergencies such as an overdose," Kaleo company officials told ABC News in a statement. "We have donated more than 10,000 doses of EVZIO to Baltimore so the city can best serve its residents. The city has never paid us for access to EVZIO."
The company said it has donated 150,000 doses of EVZIO to more than 250 organizations in 34 states, including in Maryland, free of charge. More than 1,600 lives have been reported saved with the help of EVZIO donated through the Kaleo Cares Product Donation Program.
Private donations to Baltimore’s health department have meant that city officials did not have to cut back on the number of naloxone doses bought this year but, Wen said, they still have to be frugal.
Baltimore spent $118,236 on naloxone in fiscal year 2016, more than triple the $33,540 the city spent in 2014, a Health Department spokeswoman said.
But the city also had about 5,255 naloxone kits (two doses per kit) donated in the past year, at an estimated value of $400,000, she added.
In spite of the increased city spending and donated naloxone kits, however, the opioid epidemic in Baltimore has continued to force outreach workers to make hard choices.
City outreach worker Nathan Fields said he constantly has to decide which people should get the drug immediately at community events and which people to direct to a pharmacy.
At outreach events, Fields said he will only give naloxone to those who he thinks won't be able to get to a pharmacy. The city was able to negotiate a $1 co-pay for the drug for Medicaid patients in Baltimore, according to Wen.
Fields said, "I know that some people won't [actually get the drug] if I give them a prescription because they don't have the means. He makes the decision on a “case by case basis," Fields added.
Fields was out in the city last Wednesday to provide free training on how to use naloxone for International Opioid Awareness Day. He said he has heard from families who have been affected by the opioid crisis and now want to help others dealing with addiction.
"I actually just encountered a family member today who lost someone in their family. At first, they were resistant to being trained," Fields said, adding that he then explained the program and why it was important.
"They said, ‘My brother overdosed last week,’" Fields said.
He said the man was trained in how to use naloxone.
Dr. Shailja Mehta and Dr. Katie Horton contributed to this article. Both are residents in the ABC News Medical Unit.