Ketoconazole Side Effects
What should I watch for?
Visit your doctor or health care professional for check ups. Tell your doctor if your symptoms do not improve. Some fungal infections can take many weeks or months of treatment to cure.
Avoid medicines for your stomach like antacids and acid blockers for at least two hours after taking this medicine.
You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells.
Avoid alcohol while you are taking this medicine. Alcohol can increase the risk of liver damage.
If you are going to have surgery, let your doctor know that you have been taking this medicine.
This medicine may cause a decrease in vitamin D. You should make sure that you get enough vitamin D 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:
Back, leg, or stomach pains
black, tarry stools
blood in the urine or stools
burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
change in color vision
change in the ability to see colors, especially blue or yellow
difficulty seeing at night
general body swelling
increased sensitivity of the eyes to sunlight
joint pain, stiffness, or swelling
loss of appetite
mood or mental changes
nausea or vomiting, severe
painful or difficult urination
pinpoint red spots on the skin
puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
redness of the skin
sores, ulcers, or white spots on the lips or in the mouth
swelling of the eyelids, face, lips, hands, or feet
tightness in the chest
troubled breathing or swallowing
unusual bleeding or bruising
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:
Change in number of sperm and their ability to move
decreased interest in sexual intercourse
hair loss or thinning of the hair
inability to have or keep an erection
loss in sexual ability, desire, drive, or performance
sleepiness or unusual drowsiness
swelling of the breasts or breast soreness for both female and male
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.