What should I watch for?
This medicine should not be used in women. Men should not father a child while taking this medicine and for 3 months after stopping it. There is a potential for serious side effects to an unborn child. Talk to your health care professional or pharmacist for more information.
Due to a risk of seizures with enzalutamide therapy, use caution when engaging in activities that could result in serious harm to yourself or others if you pass out.
Common and Rare Side Effects
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
bloating or swelling of the face, arms, hands, lower legs, or feet
blood in the urine
cough with mucus
difficulty with breathing
fever or chills
loss of bladder or bowel control
painful or difficult urination
pounding in the ears
slow or fast heartbeat
tingling of the hands or feet
unable to move the legs
unusual weight gain or loss
confusion or excitement
loss of memory
memory or attention span problems
nightmares or vivid dreams
rapid, shallow breathing
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
Body aches or pain
burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
difficulty having a bowel movement (stool)
difficulty with moving
feeling of constant movement of self or surroundings
feeling of warmth
lack or loss of strength
loss of voice
muscle pain, stiffness, or weakness
pain or tenderness around the eyes and cheekbones
redness of the face, neck, arms, and upper chest
sensation of spinning
stuffy or runny nose
tender, swollen glands in the neck
trouble with swallowing
unusual tiredness or weakness
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.