It is important that your doctor check your progress at regular visits to make sure that this medicine is working properly. Blood tests may be needed to check for unwanted effects.
Using this medicine while you are pregnant can harm your unborn baby. Use an effective form of birth control to keep from getting pregnant. If you think you have become pregnant while using the medicine, tell your doctor right away.
Tell your doctor right away if you are having shortness of breath, chest tightness, wheezing, or any type of breathing problem while using this medicine.
This medicine can cause changes in your heart rhythm, such as a condition called QT prolongation. It may cause fainting or serious side effects in some patients. Contact your doctor right away if you have any symptoms of heart rhythm problems, such as fast, pounding, or irregular heartbeats.
Liver problems may occur while you are using this medicine. Stop using this medicine and check with your doctor right away if you are having more than one of these symptoms: abdominal pain or tenderness; clay-colored stools; dark urine; decreased appetite; fever; headache; itching; loss of appetite; nausea and vomiting; skin rash; swelling of the feet or lower legs; unusual tiredness or weakness; or yellow eyes or skin.
Check with your doctor immediately if blurred vision, difficulty in reading, or any other change in vision occurs during or after treatment. Your doctor may want you to have your eyes checked by an ophthalmologist (eye doctor).
Check with your doctor right away if you are having burning, numbness, tingling, or painful sensations in the arms, hands, legs, or feet. These could be symptoms of a condition called peripheral neuropathy.
You may need to carry a medical identification card or bracelet showing that you are taking this medicine. Ask your doctor about this.
Before having any kind of surgery (including dental surgery) or emergency treatment, tell the medical doctor or dentist in charge that you are taking this medicine. You may need to stop using this medicine several days before having surgery or medical tests.
Amiodarone increases the sensitivity of your skin to sunlight; too much sun exposure could cause a serious sunburn. Your skin may continue to be sensitive to sunlight for several months after treatment is stopped. Use a sunscreen when you are outdoors. Wear protective clothing and hats. Avoid sunlamps and tanning beds.
After you have taken this medicine for a long time, it may cause a blue-gray color to appear on your skin, especially in areas exposed to the sun, such as your face, neck, and arms. This color will usually fade after treatment with amiodarone has ended, although it may take several months. Check with your doctor if this color change occurs.
Grapefruits and grapefruit juice may increase the side effects from amiodarone by increasing the amount of this medicine in your body. You should not eat grapefruit or drink grapefruit juice while you are using this medicine.
Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal (e.g., St. John's wort) or vitamin supplements.