Why is this medication prescribed?
Amiodarone is used to treat and prevent certain types of serious, life-threatening ventricular arrhythmias (a certain type of abnormal heart rhythm when other medications did not help or could not be tolerated. Amiodarone is in a class of medications called antiarrhythmics. It works by relaxing overactive heart muscles.
How should this medicine be used?
Amiodarone comes as a tablet to take by mouth. It is usually taken once or twice a day. You may take amiodarone either with or without food, but be sure to take it the same way each time.Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take amiodarone exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.
Other uses for this medicine
Amiodarone is also sometimes used to treat other types of arrhythmias. Talk to your doctor about the risks of using this medication for your condition.
This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.
What special precautions should I follow?
Before taking amiodarone,
- tell your doctor and pharmacist if you are allergic to amiodarone, iodine, any other medications, or any of the ingredients in amiodarone tablets. Ask your pharmacist or check the Medication Guide for a list of the ingredients.
- tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, and nutritional supplements you are taking or plan to take. Be sure to mention the medications listed in the IMPORTANT WARNING section and any of the following: antidepressants (‘mood elevators’) such as trazodone (Oleptro); anticoagulants (‘blood thinners’) such as dabigatran (Pradaxa) and warfarin (Coumadin, Jantoven); certain cholesterol lowering medications such as atorvastatin (Lipitor, in Caduet, in Liptruzet), cholestyramine (Prevalite), lovastatin (Altoprev, in Advicor), and simvastatin (Zocor, in Simcor, in Vytorin); cimetidine; clopidogrel (Plavix); cyclosporine (Gengraf, Neoral, Sandimmune); dextromethorphan (a medication in many cough preparations); fentanyl (Actiq, Duragesic, Fentora, others); HIV protease inhibitors such as indinavir (Crixivan) and ritonavir (Norvir, in Kaletra, in Viekira Pak); ledipasvir and sofosbuvir (Harvoni); lithium (Lithobid); loratadine (Claritin); medications for diabetes or seizures; methotrexate (Otrexup, Rasuvo, Trexall); narcotic medications for pain; rifampin (Rifadin, Rimactane, in Rifamate, in Rifater); and sofosbuvir (Solvaldi) with simeprevir (Olysio). Many other medications may interact with amiodarone, so be sure to tell your doctor about all the medications you are taking, even those that do not appear on this list. Your doctor may have to change the doses of your medications or monitor you carefully for side effects.
- tell your doctor what herbal products you are taking, especially St. John’s wort.
- tell your doctor if you have diarrhea or have or have ever had any of the conditions mentioned in the IMPORTANT WARNING section or problems with your blood pressure.
- tell your doctor if you are pregnant or plan to become pregnant. Talk to your doctor if you plan to become pregnant during your treatment because amiodarone may remain in your body for some time after you stop taking it. If you become pregnant while taking amiodarone, call your doctor immediately. Amiodarone can cause fetal harm.
- tell your doctor if you are breastfeeding. Do not breastfeed while you are taking amiodarone.
- talk to your doctor about the risks of taking this medication if you are 65 years of age or older. Older adults should not usually take amiodarone because it is not as safe or effective as other medication(s) that can be used to treat the same condition.
- if you are having surgery, including dental surgery or laser eye surgery, tell your doctor or dentist that you are taking amiodarone.
- plan to avoid unnecessary or prolonged exposure to sunlight or sunlamps and to wear protective clothing, sunglasses, and sunscreen. Amiodarone may make your skin sensitive to sunlight. Exposed skin may turn blue-gray and may not return to normal even after you stop taking this medication.
- you should know that amiodarone may cause vision problems including permanent blindness. Be sure to have regular eye exams during your treatment and call your doctor if your eyes become dry, sensitive to light, if you see halos, or have blurred vision or any other problems with your vision.
- you should know that amiodarone may remain in your body for several months after you stop taking it. You may continue to experience side effects of amiodarone during this time. Be sure to tell every health care provider who treats you or prescribes any medication for you during this time that you have recently stopped taking amiodarone.
What special dietary instructions should I follow?
Do not drink grapefruit juice while you are taking this medication.
What should I do if I forget a dose?
Skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.
What side effects can this medication cause?
Amiodarone may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
- loss of appetite
- decreased sex drive
- difficulty falling asleep or staying asleep
- changes in ability to taste and smell
- changes in amount of saliva
Some side effects can be serious. If you experience any of the following symptoms, or those listed in the IMPORTANT WARNING section, call your doctor immediately or get emergency medical treatment:
- weight loss or gain
- intolerance to heat or cold
- thinning hair
- excessive sweating
- changes in menstrual cycle
- swelling in the front of the neck (goiter)
- swelling of the hands, feet, ankles, or lower legs
- uncontrollable shaking of a part of the body
- decreased concentration
- movements that you cannot control
- poor coordination or trouble walking
- numbness or tingling in the hands, legs, and feet
- muscle weakness
Amiodarone may cause other side effects. Call your doctor if you have any unusual problems while taking this medication.
If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration’s (FDA) MedWatch Adverse Event Reporting program online (http://www.fda.gov/Safety/MedWatch) or by phone (1-800-332-1088).
What should I know about storage and disposal of this medication?
Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from light, excess heat and moisture (not in the bathroom).
Unneeded medications should be disposed of in special ways to ensure that pets, children, and other people cannot consume them. However, you should not flush this medication down the toilet. Instead, the best way to dispose of your medication is through a medicine take-back program. Talk to your pharmacist or contact your local garbage/recycling department to learn about take-back programs in your community. See the FDA’s Safe Disposal of Medicines website (http://goo.gl/c4Rm4p) for more information if you do not have access to a take-back program.
It is important to keep all medication out of sight and reach of children as many containers (such as weekly pill minders and those for eye drops, creams, patches, and inhalers) are not child-resistant and young children can open them easily. To protect young children from poisoning, always lock safety caps and immediately place the medication in a safe location – one that is up and away and out of their sight and reach. http://www.upandaway.org
In case of emergency/overdose
In case of overdose, call the poison control helpline at 1-800-222-1222. Information is also available online at https://www.poisonhelp.org/help. If the victim has collapsed, had a seizure, has trouble breathing, or can’t be awakened, immediately call emergency services at 911.
Symptoms of overdose may include:
- slow heartbeat
- blurred vision
What other information should I know?
Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.
It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.