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Jencycla

What Should I Tell My Healthcare Provider?

You should talk with your healthcare provider prior to using Jencycla if you have:
 
  • Liver disease, including liver failure, cirrhosis, hepatitis, or liver tumors
  • Migraines or other unusual or severe headaches
  • Diabetes
  • Cancer (or if you have had cancer in the past)
  • Unexplained vaginal bleeding.
 
Also, let your healthcare provider know if you are:
   
Make sure to tell your healthcare provider about all other medicines you are taking, including prescription and nonprescription medications, vitamins, and herbal supplements.
 
(Click Precautions and Warnings With Jencycla to learn more, including information on who should not take this pill.)
 

How Does It Work?

As previously stated, Jencycla is a progestin-only oral contraceptive. Because it contains only a progestin, it is not as effective as pills that contain both a progestin and an estrogen (known as combined oral contraceptives).  
 
Because Jencycla is only 50 percent effective at preventing ovulation, it must rely on other mechanisms to prevent pregnancy. Jencycla alters the lining of the uterus (the endometrium), making it less receptive to an embryo. It also changes the cervical mucus (the fluid of the cervix, which is the lower, narrow part of the uterus that is connected to the vagina), making it more difficult for sperm to enter the uterus.
 
Unlike combined oral contraceptives, there are no inactive or "placebo" pills in each pack of Jencycla. Every tablet contains the active hormone, and there is no break in between pills or packs. Because there are no breaks, menstrual periods often occur at irregular intervals.
 
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