Chlorthalidone Side Effects
What should I watch for?
Visit your doctor or health care professional for regular check ups. Check your blood pressure as directed. Ask your doctor or health care professional what your blood pressure should be and when you should contact him or her.
You may need to be on a special diet while taking this medicine. Ask your doctor.
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. Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks.
This medicine may affect your blood sugar level. If you have diabetes, check with your doctor or health care professional before changing the dose of your diabetic medicine.
This medicine can make you more sensitive to the sun. Keep out of the sun. If you cannot avoid being in the sun, wear protective clothing and use sunscreen. Do not use sun lamps or tanning beds/booths.
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:
Incidence not known
Abdominal or stomach pain
black, tarry stools
blistering, peeling, or loosening of skin
blood in urine or stools
burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
cough or hoarseness
coughing up blood
dizziness, faintness, or lightheadedness when getting up from a lying or sitting position suddenly
flushed, dry skin
fruit-like breath odor
general feeling of tiredness or weakness
joint pain, stiffness, or swelling
loss of appetite
lower back or side pain
pain in joints or muscles
painful or difficult urination
pains in stomach, side, or abdomen, possibly radiating to the back
pinpoint red spots on skin
red irritated eyes
red skin lesions, often with a purple center
redness, soreness or itching skin
shortness of breath
sores, ulcers, or white spots on lips or in mouth
sores, welting, or blisters
sugar in the urine
swelling of feet or lower legs
tightness in chest
unpleasant breath odor
unusual bleeding or bruising
unusual tiredness or weakness
unusual weight loss
vomiting of blood
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:
Incidence not known
decreased interest in sexual intercourse
difficulty having a bowel movement (stool)
feeling of constant movement of self or surroundings
inability to have or keep an erection
increased sensitivity of skin to sunlight
loss in sexual ability, desire, drive, or performance
redness or other discoloration of skin
sensation of spinning
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.