This medication is used to treat a certain type of fungal infection of the scalp (tinea capitis). Terbinafine belongs to a class of drugs known as antifungals. It works by stopping the growth of fungus.
Take this medication by mouth with food, usually once a day, or as directed by your doctor. Sprinkle the contents of 1 packet on a spoonful of pudding or other soft food such as mashed potatoes. Do not use acid foods such as fruit or applesauce. Swallow all of the mixture without chewing. If your doctor has directed you to take 2 packets for each dose, then sprinkle the contents of 2 packets onto 1 or 2 spoonfuls of the correct type of soft food, and swallow as directed above.
Dosage is based on your body weight, medical condition, and response to treatment.
This medication work best when the amount of medicine in your body is kept at a constant level. Therefore, take this drug at evenly spaced intervals.
Continue to take this medication until the full prescribed amount is finished. Stopping the medication too early may allow the fungus to continue to grow, which may result in a return of the infection.
Tell your doctor if your condition persists or worsens after 6 weeks.
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.
Changes in your sense of taste/smell or loss of taste/smell may occur. These side effects may improve after stopping terbinafine, but can last for a long time or become permanent. Tell your doctor right away if you notice either of these side effects.
Tell your doctor right away if you have any serious side effects, including: vision changes, mental/mood changes (such as depression), unexplained bleeding/bruising, unusual tiredness, signs of kidney problems (such as change in the amount of urine).
Terbinafine may rarely cause serious (possibly fatal) liver disease. Get medical help right away if you have any symptoms of liver damage, such as: nausea/vomiting that doesn't stop, loss of appetite, severe stomach/abdominal pain, yellowing eyes/skin, dark urine.
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: fever, swollen lymph nodes, rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
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 or at www.fda.gov/medwatch.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Before taking terbinafine, tell your doctor or pharmacist if you are allergic to it; 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.
Limit alcoholic beverages. Daily use of alcohol may increase your chance for serious side effects.
This medication may make you more sensitive to the sun. Limit your time in the sun. Avoid tanning booths and sunlamps. Use sunscreen and wear protective clothing when outdoors. Tell your doctor right away if you get sunburned or have skin blisters/redness.
During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.
This medication passes into breast milk and may have undesirable effects on a nursing infant. Therefore, breast-feeding is not recommended while using this drug. Consult your doctor before breast-feeding.
Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.
A product that may interact with this drug is: warfarin.
Other medications can affect the removal of terbinafine from your body, which may affect how terbinafine works. Examples include amiodarone, azole antifungals (such as fluconazole, ketoconazole), cimetidine, rifampin, among others.
This medication can slow down the removal of other medications from your body, which may affect how they work. Examples of affected drugs include beta blockers, dextromethorphan, tricyclic antidepressants, SSRI antidepressants, thioridazine, drugs to treat heart rhythm problems, rasagiline, among others.
If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center.
This medication has been prescribed for your current condition only. Do not use it later for another infection unless your doctor directs you to do so. A different medication may be necessary in that case.
Lab and/or medical tests (such as complete blood counts, liver function tests) should be done before you start taking this medication and while you are taking it. Keep all medical and lab appointments. Consult your doctor for more details.
If you miss a dose, take it as soon as you remember. If it is near the time of the next dose, skip themissed dose and resume your usual dosing schedule. Do not double the dose to catch up.
Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.Information last revised March 2017. Copyright(c) 2017 First Databank, Inc.
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