title: Oral contraceptives: does formulation matter?
abstract: OCs come in a variety of formulations but verifiable differences between products are difficult to find.
authors.affiliation: Crozer Keystone Family Medicine Department, Crozer Keystone Health System, Springfield, PA, USA. Email: eschaff@aol.com.
authors.forename: Kathryn A
authors.initials: KA
authors.lastname: Szabo
authors.forename: Eric A
authors.initials: EA
authors.lastname: Schaff
mesh_terms: D002626:Chemistry, Pharmaceutical / Q000379:methods; D002986:Clinical Trials as Topic; D003267:Contraception / Q000379:methods; D003276:Contraceptives, Oral / Q000008:administration & dosage / Q000009:adverse effects; D004334:Drug Administration Schedule; D004338:Drug Combinations; D004339:Drug Compounding; D019317:Evidence-Based Medicine; D005260:Female; D006801:Humans; D015201:Meta-Analysis as Topic; D017060:Patient Satisfaction; D017410:Practice Guidelines as Topic; D011788:Quality of Life; D016032:Randomized Controlled Trials as Topic; D012307:Risk Factors
chemical_list: D003276:Contraceptives, Oral; D004338:Drug Combinations