Vestrant is a medicine used to treat breast cancer in women who have gone through menopause. It works by blocking estrogen, a hormone that can help certain types of breast cancer cells grow. By lowering estrogen’s effect, Vestrant helps slow down or stop the growth of cancer.

Possible side effects

Like all medicines, Vestrant may cause some side effects. Not everyone gets them, but it’s good to be aware.
Common side effects include:

• Hot flashes (feeling of sudden warmth in the face, neck, or chest)

• Nausea or upset stomach

• Weakness or fatigue

• Injection site pain or swelling

Less common but more serious side effects can include:

• Liver problems (yellowing of the skin or eyes, dark urine, severe stomach pain)

• Unusual bleeding or bruising

• Signs of blood clots (sudden chest pain, shortness of breath, leg swelling)

If you notice anything worrying or severe, contact your doctor right away.