Amid backlash from Capitol Hill over increasing drug prices, Pfizer announced Thursday it will immediately double the allowable income level for its assistance program to enable more patients to receive the company’s medicines for free.

Under the Pfizer RxPathways program, patients earning up to four times the federal poverty level ― $47,080 for a single person and $97,000 for a family of four ― will be eligible for more than 40 medicines offered for free.