Errin (Norethindrone): Uses, Side Effects & Interactions
Errin is a progestin-only oral contraceptive, commonly referred to as a minipill, utilizing the active ingredient norethindrone to prevent pregnancy. The most frequently encountered side effect of this estrogen-free formulation is unpredictable menstrual bleeding, presenting as spotting or irregular spotting between regular menstrual cycles. 1. Introduction & Mechanism of Action of Errin Norethindrone acts as … Read more