Last October, Subway made a vow to start selling antibiotic-free products, and the time is almost here. Starting March 1, the fast food chain will begin selling antibiotic-free, all-white-meat chicken that has no artificial color and flavor.

Subway has always counted itself as one of the healthier options when it comes to getting a quick bite to eat. The company is aiming to be fully done with selling antibiotic meat in the United States by 2025 and will make sure all chicken is antibiotic-free by the end of 2016. All turkey sold at Subway will be antibiotic-free within the next two to three years and all pork and beef products will also be antibiotic-free starting between 2020 and 2025, according to Subway.

"When we developed the new Rotisserie-Style Chicken recipe, we were inspired by its seasoned, slow-cooked flavor profile and a belief in better, quality ingredients," said Chris Martone, executive chef for Subway. "At first, there wasn't a national supply available to meet our demands of our 27,000-plus U.S. restaurants, but our guests pushed us to continue the journey with our purchasing partners and suppliers and we are proud to deliver on our commitment to serve a premium product raised without antibiotics to them so quickly."

Along with the announcement of the new antibiotic-free chicken subs, the food chain also announced a new carved-turkey sandwich for its Fresh Fit menu, according to CNBC. The new sandwich will be sold as a six-inch with whole grain bread that is less than 400 calories and is low in saturated fat.