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What You Need to Know About Introvale

Drug Interactions

Introvale can react with a number of other medications (see Drug Interactions With Introvale).
 

What If I Take an Overdose of Introvale?

Women who take too much Introvale may experience the following symptoms:
 
  • Nausea
  • Vomiting
  • Vaginal bleeding
  • Other menstrual irregularities.
     
(Click Seasonale Overdose for more information.)
 

How Should This Medication Be Stored?

Keep Introvale tablets in their original package. The packaging is designed to help you remember to take the tablets each day. Keep the package at room temperature, away from moisture and heat.
 
Keep this and all other medications out of the reach of children.
 

What If I Miss a Dose of Introvale?

Missing doses of Introvale increases the risk of pregnancy. What you should do depends on how many tablets you have missed and where exactly you are in your cycle (see Introvale Dosage). If you are not sure what to do, refer to the patient information that comes with each pack, or talk to your healthcare provider.
 

How Does Introvale Work?

Introvale is a combined oral contraceptive, a birth control pill that contains both an estrogen (ethinyl estradiol) and a progestin (levonorgestrel). It works to prevent pregnancy primarily by stopping ovulation (the maturation and release of eggs from the ovaries). However, it also works to prevent pregnancy in two other, minor ways.
 
Introvale alters 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. It also alters the lining of the uterus (the endometrium), making it less receptive to an embryo.
 
There is no reason why women need to have a monthly period while taking birth control pills. In fact, the "period" you experience while taking birth control pills isn't really a period at all.
 
Because ovulation does not occur, the body does not prepare for a possible pregnancy by building up the lining of the uterus, so there is no need to shed the lining, as with a regular period. Instead, the "period" that occurs due to birth control pills is actually caused by a withdrawal of the hormones in the pills, which causes bleeding.
 
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Introvale Birth Control Information

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