Levonorgestrel

What Is Levonorgestrel

Levonorgestrel is a hormone medicine used for birth control and emergency contraception. It is commonly recommended by a gynecologist or women’s health doctor.

This medicine is often called the morning-after pill when used for emergency contraception.

Levonorgestrel tablets help prevent pregnancy after unprotected sex or birth control failure, such as a broken condom or missed birth control pills.

The medicine contains a man-made form of the female hormone progesterone. This hormone helps control the menstrual cycle and pregnancy.

Levonorgestrel works best when taken as soon as possible after unprotected sex.

This medicine does not end an existing pregnancy and is not the same as an abortion pill.

What This Medicine Does in the Body

Levonorgestrel changes hormone activity in the body to help prevent pregnancy.

Normally, the ovaries release an egg every month. This process is called ovulation.

The medicine mainly works by delaying or stopping ovulation.

If the egg is not released, pregnancy cannot happen.

Levonorgestrel also makes the fluid around the cervix thicker. The cervix is the lower opening of the uterus.

Thicker fluid makes it harder for sperm to reach the egg.

The medicine may also change the lining inside the uterus, which can make pregnancy less likely.

Some women may notice temporary changes in their monthly periods after taking the medicine.

Uses of Levonorgestrel / Levonorgestrel Used For

Levonorgestrel is mainly used to prevent pregnancy.

One common use of Levonorgestrel emergency contraceptive pills is preventing pregnancy after:

unprotected sex, condom breakage, missed birth control pills, or contraceptive failure.

Doctors may also use Levonorgestrel in regular birth control pills and hormone-releasing intrauterine devices (IUDs).

Some hormonal treatments containing this medicine may help reduce heavy periods or painful menstrual cramps.

This medicine does not protect against sexually transmitted infections (STIs).

For emergency contraception, the medicine works better when taken early after unprotected intercourse.

How Levonorgestrel Works

Levonorgestrel mainly works by stopping or delaying the release of an egg from the ovary.

Without an egg, sperm cannot cause pregnancy.

The medicine also thickens cervical fluid, making it more difficult for sperm to move toward the egg.

In some cases, it may change the lining inside the uterus and reduce the chance of pregnancy.

Emergency contraceptive tablets work best when used within the recommended time after unprotected sex.

Doctors may suggest a pregnancy test if the next period becomes very late after taking the medicine.

Side Effects of Levonorgestrel

Like all medicines, Levonorgestrel may cause side effects, although many women tolerate it well.

Common side effects include nausea, tiredness, headache, dizziness, breast tenderness, and stomach pain.

Some women may notice changes in their next period. The bleeding may become lighter, heavier, earlier, or later than usual.

Mild spotting between periods may also happen.

Rare side effects include severe allergic reactions or severe abdominal pain.

Medical help is needed if severe stomach pain, very heavy bleeding, or signs of pregnancy develop after treatment.

Medical Disclaimer

This content is for educational purposes only and should not replace professional medical advice. Levonorgestrel should only be used under the supervision of a qualified healthcare professional such as a gynecologist or women’s health doctor. Do not start, stop, or change the dose without medical guidance. Treatment response and safety may vary depending on hormone levels, timing of use, medical history, and overall health condition.