There's no limit to the number of covered antibiotics you can have filled for free.

United Supermarkets, LLC banner Market Street this week introduced the "Free to Feel Better" program in its Dallas-Fort Worth-area stores. Under the program, the participating stores' pharmacies will fill prescriptions for prenatal vitamins and antibiotics at no charge. Market Street is the only north Texas grocer to offer the program, according to United

http://www.unitedtexas.com/feelbetter/antibiotics.asp