Halfan has caused serious, even fatal, heart problems (eg, ventricular arrhythmias), even at the recommended dose. Halfan is not recommended for use while other medicines known to cause heart problems (eg, prolonged QT interval) are being used, nor in people who have a history of heart problems or have had unexplained fainting episodes. Your doctor will monitor you closely while you are using Halfan .
Treating malaria in patients who can tolerate oral medicine.
Halfan is an antimalarial agent. How it works is not fully understood.
Contact your doctor or health care provider right away if any of these apply to you.
Some medical conditions may interact with Halfan . Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:
Some MEDICINES MAY INTERACT with Halfan . Tell your health care provider if you are taking any other medicines, especially any of the following:
This may not be a complete list of all interactions that may occur. Ask your health care provider if Halfan may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.
Use Halfan as directed by your doctor. Check the label on the medicine for exact dosing instructions.
Ask your health care provider any questions you may have about how to use Halfan .
All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome:
Cough; diarrhea; dizziness; headache; loss of appetite; nausea; stomach pain; vomiting.Seek medical attention right away if any of these SEVERE side effects occur:
Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); abnormal skin sensations; chest pain; dark urine; fast heartbeat; fatigue; pale color; seizures; shortness of breath; vision changes.
This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. You may also report side effects at http://www.fda.gov/medwatch.
Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center (http://www.aapcc.org), or emergency room immediately. Symptoms may include decreased consciousness; diarrhea; rapid or pounding heartbeat; stomach pain or cramps; vomiting.Proper storage of Halfan :
Store Halfan at room temperature, between 68 and 77 degrees F (20 and 25 degrees C). Store away from heat, moisture, and light. Keep Halfan out of the reach of children and away from pets.
This information is a summary only. It does not contain all information about Halfan . If you have questions about the medicine you are taking or would like more information, check with your doctor, pharmacist, or other health care provider.