Buphenyl (Sodium Phenylbutyrate Powder) and Liletta

• Generic Name: sodium phenylbutyrate
• Dosage Forms: powder, tablets
• Other Brand Names: Buphenyl

• It is used to treat urea cycle problems.

• Generic Name: levonorgestrel
• Dosage Forms: intrauterine device
• Other Brand Names: Kyleena, Liletta, Mirena, Skyla, Aftera, EContra EZ, EContra One-Step, Fallback Solo, My Choice, My Way, New Day, Next Choice One Dose, Opcicon One-Step, Plan B One-Step, React, Take Action, My Way, Next Choice

Levonorgestrel is a female hormone that can cause changes in your cervix, making it harder for sperm to reach the uterus and harder for a fertilized egg to attach to the uterus. Liletta is a plastic device that is placed in the uterus where it slowly releases the hormone to prevent pregnancy for up to 6 years.

Liletta is used to prevent pregnancy for up to 6 years. You may use this device whether you have children or not. Mirena is also used to treat heavy menstrual bleeding in women who choose to use an intrauterine form of birth control.

Levonorgestrel is a progestin hormone and does not contain estrogen. The intrauterine device (IUD) releases levonorgestrel in the uterus, but only small amounts of the hormone reach the bloodstream. Liletta should not be used as emergency birth control.

Liletta may also be used for purposes not listed in this medication guide.