centration (pgIrnL) 12 Mean Plasma Norethindrone Concentration-Time Profiles Following Single- and Multiple-Dose Oral Administration of Loestrin 24 Fe Tablets to Healthy Female Volunteers under Fasting Condition (n = 17) bb 0 O .......... 0 ......... —a— Day 1 o Day 24 0 12 24 36 48 60 Time (h