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Side effects may include nausea, vomiting, abdominal pain, headache, diarrhea, weakness, loss of appetite, and dizziness. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor immediately if any of these rare but very serious side effects occur: signs of serious liver problems (such as persistent/severe nausea and vomiting, abdominal pain, unexplained tiredness, dark urine, yellowing eyes/skin), signs of anemia (such as worsening tiredness, rapid breathing, pale skin/lips/nails, fast heartbeat while resting), signs of severe infection (such as high fever, severe chills, body aches, sore throat).
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Read the Malarone (atovaquone and proguanil hcl) Side Effects Center for a complete guide to possible side effects »
PRECAUTIONS: Before taking atovaquone/proguanil, tell your doctor or pharmacist if you are allergic to either atovaquone or proguanil; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: current diarrhea, current vomiting, kidney problems, liver problems, mental/mood problems, seizures.
This drug may make you dizzy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.
Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
During pregnancy, this medication should be used only when clearly needed. While you are pregnant, traveling to an area with malaria places you and your infant at a much higher risk for death and other problems. Discuss the risks and benefits of malaria prevention with your doctor.
It is not known if atovaquone passes into breast milk and may have undesirable effects on a nursing infant. The proguanil in this medication passes into breast milk and the effects of this medication on a nursing infant are not known. The CDC recommends against using this product for malaria prevention if you are breastfeeding an infant weighing less than 11 pounds (5 kilograms). Consult your doctor before breast-feeding.
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Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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