What Should I Tell My Healthcare Provider Before Taking It?
You should talk with your healthcare provider prior to using Errin if you have:
- Cancer (or if you have had cancer in the past)
- Liver disease, including liver failure, cirrhosis, hepatitis, or liver tumors
- Migraines or other unusual or severe headaches
- 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 non-prescription medicines, vitamins, and herbal supplements.
Errin is categorized as a progestin-only oral contraceptive
. Because it contains only a progestin, it is slightly less effective than pills that contain both an estrogen and a progestin (known as combined oral contraceptives). Errin and other progestin-only oral contraceptives stop ovulation in only about half of the women who take them.
Because Errin is not very effective at preventing ovulation, it also relies on other mechanisms to prevent pregnancy. For example, Errin alters the lining of the uterus (called 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 Errin. 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.