Lansoprazole Side Effects
What should I watch for?
It can take several days before your stomach pain gets better. Check with your doctor or health care professional if your condition does not start to get better, or if it gets worse.
You may need blood work done while you are taking this medicine.
This medicine may cause a decrease in vitamin B12. You should make sure that you get enough vitamin B12 while you are taking this medicine. Discuss the foods you eat and the vitamins you take with your health care professional.
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:
unusual bleeding or bruising
Incidence not known
Back or leg pains
blistering, peeling, or loosening of the skin
bloody, black, or tarry stools
change in mental status
clay colored stools
dark or bloody urine
difficulty with swallowing
general body swelling
loss of appetite
lower back or side pain
mood or mental changes
muscle spasms (tetany) or twitching seizures
painful or difficult urination
pains in the stomach, side, or abdomen, possibly radiating to the back
pinpoint red spots on the skin
puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
red skin lesions, often with a purple center
red, irritated eyes
sores, ulcers, or white spots on the lips or in the mouth
swelling of the feet or lower legs
swollen or painful glands
tightness in the chest
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:
Bad, unusual, or unpleasant (after) taste
burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
change in taste
feeling of heat or warmth
flushing or redness of the skin, especially on the face and neck
stomach discomfort or upset
Incidence not known
Decrease in passing urine (dribbling)
decrease in the frequency of urination
decrease in urine volume
difficulty with speaking
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.