Losartan Side Effects
What should I watch for?
Visit your doctor or health care professional for regular checks on your progress. 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. Call your doctor or health care professional if you notice an irregular or fast heart beat.
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, particularly in the second or third trimester. Talk to your health care professional or pharmacist for more information.
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.
Avoid salt substitutes unless you are told otherwise by your doctor or health care professional.
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:
Abdominal or stomach pain
bloody or cloudy urine
cool, pale skin
difficult, burning, or painful urination
frequent urge to urinate
lower back or side pain
nausea or vomiting
numbness or tingling in the hands, feet, or lips
shortness of breath
troubled breathing with exertion
unusual bleeding or bruising
unusual tiredness or weakness
weakness or heaviness of the legs
Arm, back, or jaw pain
chest pain or discomfort
chest tightness or heaviness
dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
fast, irregular, pounding, or racing heartbeat or pulse
inability to speak
pain or discomfort in the arms, jaw, back, or neck
severe or sudden headache
swelling or puffiness of the face
unsteadiness or awkwardness
weakness in the arm or leg on one side of the body, sudden and severe
weakness in the arms, hands, legs, or feet
Incidence not known
Black, tarry stools
difficulty with swallowing
general tiredness and weakness
large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
muscle cramps or spasms
muscle pain or stiffness
pinpoint red spots on the skin
puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
upper right abdominal or stomach pain
yellow eyes and 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:
body aches or pain
loss of voice
Acid or sour stomach
difficulty with moving
increased sensitivity to pain
increased sensitivity to touch
lack or loss of strength
pain in the knees or legs
pain or tenderness around the eyes and cheekbones
stomach discomfort or upset
Ankle, knee, or great toe joint pain
change or loss of taste
difficulty having a bowel movement (stool)
excess air or gas in the stomach or intestines
hair loss or thinning of the hair
increased sensitivity of the skin to sunlight
loss of appetite
redness or other discoloration of the skin
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.