DrugDigest: Norgestrel-Ethinyl Estradiol ( Lo/Ovral ): Information on dosage, usage, side effects, interactions, and drug comparisons, including generics when available.
Lo/Ovral: Prescribing information for US residents in PDF format. [Acrobat Reader required]
Lo/Ovral-28: Prescribing information for US residents in PDF format. [Acrobat Reader required]
Norgestrel/Ethinyl Estradiol: Information from the RxList.