Erlotinib Side Effects
What should I watch for?
Tell your doctor or healthcare professional if your symptoms do not start to get better or if they get worse.
Visit your doctor for regular check ups. Report any side effects. Continue your course of treatment unless your doctor tells you to stop. You will need blood work done while you are taking this medicine.
Tell your doctor or health care professional right away if you have any change in your eyesight.
Check with your doctor or health care professional if you get an attack of severe diarrhea, nausea and vomiting, or if you sweat a lot. The loss of too much body fluid can make it dangerous for you to take this medicine.
Do not become pregnant while taking this medicine or for 1 month after stopping it. Women should inform their doctor if they wish to become pregnant or think they might be pregnant. There is a potential for serious side effects to an unborn child. Talk to your health care professional or pharmacist for more information. Do not breast-feed an infant while taking this medicine or for 2 weeks after stopping it.
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:
Burning, tingling, numbness or pain in the hands, arms, feet, or legs
cough or hoarseness
difficult or labored breathing
fever or chills
lower back or side pain
painful or difficult urination
sensation of pins and needles
stabbing chest pain
tightness in the chest
Bloody or black, tarry stools
chest pain or discomfort
eye irritation or redness
inability to speak
pain or discomfort in the arms, jaw, back, or neck
severe stomach pain
sudden, severe chest pain
sudden, severe headache
sudden, severe weakness in the arm or leg on one side of the body
vomiting of blood or material that looks like coffee grounds
Incidence not known
blistering, peeling, or loosening of the skin
burning feeling in the chest or stomach
burning upper abdominal or stomach pain
darkening of the skin
decreased urine output
general feeling of tiredness or weakness
loss of appetite
muscle pain or stiffness
nausea or vomiting
rapid weight gain
red skin lesions, often with a purple center
sores, ulcers, or white spots in the mouth or on the lips
stomach pain, continuing
swelling of the face, ankles, or hands
tenderness in the stomach area
unusual tiredness or weakness
yellow eyes or skin
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:
Acid or sour stomach
blemishes on the skin
bloated or full feeling
burning, dry, or itching eyes
difficulty with moving
excess air or gas in the stomach or intestines
feeling sad or empty
feeling unusually cold
loss of interest or pleasure
redness, pain, or swelling of the eye, eyelid, or inner lining of the eyelid
stomach discomfort, upset, or pain
swelling or inflammation of the mouth
thinning of the hair
trouble or inability to sleep
trouble with concentrating
Loosening of the fingernails
redness or soreness around the fingernails
Incidence not known
Brittle and loose nails
discharge, excessive tearing
increased hair growth, especially on the face
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.