What side effects may I notice from receiving Tamoxifen?

Side effects that you should report to your doctor or health care professional as soon as possible:

-allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
-changes in vision
-changes in your menstrual cycle
-difficulty walking or talking
-new breast lumps
-numbness
-pelvic pain or pressure
-redness, blistering, peeling or loosening of the skin, including inside the mouth
-signs and symptoms of a dangerous change in heartbeat or heart rhythm like chest pain, dizziness, fast or irregular heartbeat, palpitations, feeling faint or lightheaded, falls, breathing problems
-sudden chest pain
-swelling, pain or tenderness in your calf or leg
-unusual bruising or bleeding
-vaginal discharge that is bloody, brown, or rust
-weakness
-yellowing of the whites of the eyes or skin
Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

-fatigue
-hair loss, although uncommon and is usually mild
-headache
-hot flashes
-impotence (in men)
-nausea, vomiting (mild)
-vaginal discharge (white or clear)

This list may not describe all possible side effects for Tamoxifen. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.