Alesse: Details about this low-dose (20 mcg) birth control pill. Includes prescribing information.
DrugDigest: Ethinyl Estradiol and Levonorgestrel: Information on dosage, usage, side effects, interactions, and drug comparisons, including generics when available. Sold under brand names such as: Alesse, Aviave, Enpresse, Lessina-28, Levlen, Levlite, Levora, Nordette, Tri-Levlen, Triphasil, Trivora-28.
L-Norgestrel/Ethinyl Estradiol: Information from the RxList.
Triphasil -28: Prescribing information for US residents in PDF format. [Acrobat Reader required]
Triphasil-21: Prescribing information for US residents in PDF format. [Acrobat Reader required]