The program, called MAINTAIN, will provide access to more than 70 Pfizer drugs including atorvastatin (Lipitor), celecoxib (Celebrex), pregabalin (Lyrica), and sildenafil (Viagra).
But the program excludes biologics, most cancer drugs, and other of Pfizer's most expensive products.
Individuals who became unemployed after Jan. 1 of this year are eligible for the program and may sign up through Dec. 31.
Other eligibility requirements include having taken the branded Pfizer drug for at least three months prior to losing a job, having no other prescription drug coverage, and being able to attest to financial hardship.
Income prior to becoming unemployed is not a factor, Pfizer said. But participants who regain employment or prescription drug coverage will have to start paying again.
Pfizer said sign-ups and additional information on the MAINTAIN program would be available at Pfizer Helpful Answers.