Atenolol / Chlorthalidone Side Effects
What should I watch for?
Visit your doctor or health care professional for regular check ups. Check your heart rate and blood pressure regularly. Ask your doctor or health care professional what your blood pressure should be and when you should contact him or her.
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.
You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this drug 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 can make you more drowsy and dizzy. Avoid alcoholic drinks.
This medicine can affect blood sugar levels. If you have diabetes, check with your doctor or health care professional before you change your diet or 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.
Do not treat yourself for coughs, colds, or pain while you are taking this medicine without asking your doctor or health care professional for advice. Some ingredients may increase your blood pressure.
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:
Cold arms or legs
difficult or labored breathing
shortness of breath
tightness in chest
Chest pain or discomfort
dizziness, faintness, or lightheadedness when getting up from lying or sitting position
lightheadedness, dizziness, or fainting
slow or irregular heartbeat
unusual tiredness or weakness
Incidence not determined
Black, tarry stools
blood in urine or stools
feeling that others are watching you or controlling your behavior
feeling that others can hear your thoughts
general feeling of discomfort, illness, or weakness
paleness or cold feeling in fingertips and toes
pinpoint red spots on skin
seeing, hearing, or feeling things that are not there
severe mood or mental changes
skin irritation or rash, including rash that looks like psoriasis
unusual bleeding or bruising
Get emergency help immediately if any of the following symptoms of overdose occur:
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:
feeling sad or empty
lack of appetite
loss of interest or pleasure
feeling of constant movement of self or surroundings
sensation of spinning
unusual drowsiness, dullness, or feeling of sluggishness
Incidence not determined
Decreased interest in sexual intercourse
disturbed color perception
hair loss, thinning of hair
halos around lights
inability to have or keep an erection
loss in sexual ability, desire, drive, or performance
loss of vision
overbright appearance of lights
pain of penis on erection
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.