Tranexamic acid is a man-made form of an amino acid (protein) called lysine. Tranexamic acid prevents enzymes in the body from breaking down blood clots.

Lysteda is used to treat heavy menstrual bleeding. This medication will not treat premenstrual syndrome (PMS).

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

You should not take Lysteda if you are allergic to tranexamic acid, or if you have:

• problems with the blood vessels in your eyes;
• color blindness;
• a history of stroke;
• if you have a history of bleeding in your brain; or
• if you have recently had a blood clot.

To make sure you can safely take Lysteda, tell your doctor if you have any of these other conditions:

• leukemia;
• kidney disease;
• a history of endometriosis; or
• if your menstrual cycles are less than 21 days apart or longer than 35 days apart.

It is not known whether tranexamic acid will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using this medication.

Tranexamic acid can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

Do not give this medication to anyone under 18 years old without your doctor's advice.

Do not share Lysteda with another person, even if they have the same symptoms you have.

Use Tranexamic Acid (Lysteda)(Compounding,Oral) exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended.

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop taking Lysteda and call your doctor at once if you have a serious side effect such as:

• problems with your vision (including color vision);
• sudden numbness or weakness, especially on one side of the body;
• sudden headache, confusion, problems with vision, speech, or balance;
• sudden chest pain or trouble breathing;
• pain or swelling in one or both legs;
• migraine headache;
• pale skin, feeling light-headed or short of breath, rapid heart rate, trouble concentrating; or
• feeling like you might pass out.

Less serious side effects include:

• mild headache;
• runny or stuffy nose;
• stomach pain;
• tired feeling;
• eye redness; or
• back pain, joint or muscle pain.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Avoid using a hormonal form of birth control such as birth control pills, injections, implants, skin patches, and vaginal rings. Hormonal contraception may increase your risk of stroke, blood clot, or heart attack while you are taking Lysteda. If you need to use birth control during treatment with Lysteda, use a barrier form (such as a condom or diaphragm with spermicide).