Atazanavir (Oral Route)

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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 discomfort, fullness, or pain
• Bloating
• Blood in the urine
• Blurred vision
• Chest pain or discomfort
• Chills
• Clay-colored stools
• Constipation
• Dark colored urine
• Decreased appetite
• Diarrhea
• Dizziness or lightheadedness
• Dry mouth
• Fainting
• Fast heartbeat
• Fast, shallow breathing
• Fever
• Flushed, dry skin
• Fruit-like breath odor
• Gaseous abdominal or stomach pain
• General feeling of discomfort
• Headache
• Hives
• Increased hunger
• Increased thirst
• Increased urination
• Indigestion
• Irregular heartbeat
• Itching
• Loss of appetite
• Loss of consciousness
• Muscle pain or cramping
• Nausea
• Pain in the groin or genitals
• Pain in the stomach, side, or abdomen, possibly radiating to the back
• Recurrent fever
• Severe nausea or vomiting
• Sharp back pain just below the ribs
• Shortness of breath
• Skin rash
• Sleepiness
• Slow or irregular heartbeat
• Stomachache
• Sweating
• Swelling
• Tightness in the chest
• Trouble with breathing
• Unexplained weight loss
• Unpleasant breath odor
• Unusual tiredness or weakness
• Vomiting
• Vomiting of blood
• Wheezing
• 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:

• Back pain
• Cough, increased
• Discouragement
• Extra body fat
• Feeling sad or empty
• Irritability
• Loss of interest or pleasure
• Trouble concentrating
• Trouble sleeping

• Burning, numbness, tingling, or painful sensations
• Difficulty with moving
• Muscle stiffness
• Pain
• Pain in the joints
• Sleeplessness
• Unable to sleep
• Unsteadiness or awkwardness
• Weakness in the arms, hands, legs, or feet

• Hair loss or thinning of the hair
• Rash with flat lesions or small raised lesions on 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.

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