This medication is used to treat fungal infections of the skin, hair, and nails that do not respond to creams/lotions. Clearing such infections will get rid of symptoms such as itching, red/peeling/scaly skin, and discolored nails. This medication works by stopping the growth of fungi. It does not treat infections due to bacteria or yeast.
How to use Gris-PEG
Take this medication by mouth as directed by your doctor. For the best absorption, it is best taken with or after a meal containing a moderate amount of fat. Talk to your doctor or pharmacist about specific dietary instructions, especially if you are on a low-fat diet.
The dosage is based on your medical condition and response to therapy. In children, dosage is also based on weight. The length of treatment depends on the type of infection you have. It may take several weeks to months to complete treatment for infections of the scalp, feet, and body. Nail infections may require several months to a year or longer to treat.
Continue to take this medication for the full prescribed length of treatment even if symptoms improve after a few days. Stopping the medication too early may allow the fungus to continue to grow, which may result in a relapse of the infection.
Inform your doctor if your condition persists or worsens.
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 right away if any of these unlikely but serious side effects occur: numbness/tingling of the hands/feet, mental/mood changes (e.g., confusion, trouble doing normal activities), hearing changes, butterfly-shaped facial rash (around the nose and cheeks), joint/muscle pain.
Tell your doctor right away if any of these rare but very serious side effects occur: yellowing eyes/skin, stomach/abdominal pain, persistent nausea/vomiting, dark urine, signs of kidney problems (such as change in the amount of urine, frothy urine), signs of infection (e.g., fever, persistent sore throat).
Use of this medication for prolonged or repeated periods may result in oral thrush or a new vaginal yeast infection (oral or vaginal fungal infection). Contact your doctor if you notice white patches in your mouth, a change in vaginal discharge, or other new symptoms.
A very serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction may include: 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 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 griseofulvin, 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.
This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: a certain blood disorder (porphyria), severe liver disease (liver failure).
Before using this medication, tell your doctor or pharmacist your medical history, especially of: lupus.
This drug may make you dizzy or less alert. Alcohol or marijuana (cannabis) can make you more dizzy or much less alert. Do not drive, use machinery, or do anything that needs alertness until you can do it safely. Avoid alcoholic beverages while you are taking this drug unless your doctor gives permission. Drinking alcohol during treatment with this drug could result in a fast heartbeat and flushing of the skin. Talk to your doctor if you are using marijuana (cannabis).
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.
This medication is not recommended for use during pregnancy. It may harm an unborn baby. Consult your doctor for more details and to discuss delaying griseofulvin treatment. Use of reliable form(s) of birth control is recommended during treatment and for 1 month after the drug is stopped. If you are planning to become pregnant within 1 month after treatment, the manufacturer recommends avoiding this drug. (See also Drug Interactions.)
The effects of this drug on human sperm are unknown. However, based on animal cell studies, the manufacturer recommends waiting for a period of time after completing griseofulvin treatment before trying to father a child. Discuss the risks and benefits with your doctor, and ask how long to wait after your last dose before trying to father a child.
It is unknown if this drug passes into breast milk. Consult your doctor before breast-feeding.
Your healthcare professionals (such as your doctor or pharmacist) may already be aware of any possible drug interactions and may be monitoring you for it. Do not start, stop or change the dosage of any medicine before checking with them first.
This medication may decrease the effectiveness of hormonal birth control such as pills, patch, or ring. This could cause pregnancy. Discuss with your doctor or pharmacist if you should use additional reliable birth control methods while using this medication. Also tell your doctor if you have any new spotting or breakthrough bleeding, because these may be signs that your birth control is not working well.
This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.
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.
Do not share this medication with others.
This medication has been prescribed for your current condition only. Do not use it later for another infection unless your doctor tells you to.
Laboratory and/or medical tests (e.g., kidney and liver function, complete blood count) should be performed periodically to check for side effects with prolonged treatment. Consult your doctor for more details.
Ask your doctor or pharmacist about ways to control the infection and to prevent re-infection. Fungus spreads easily in warm, moist areas. Follow good hygiene (for example wash and dry the infected area completely, and do not share articles of clothing or objects that come in contact with the infected area).
If you miss a dose, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose. Take your next dose at the regular time. Do not double the dose to catch up.
Store at room temperature between 59-86 degrees F (15-30 degrees C) away from light and moisture. Do not store in the bathroom. Keep all medicines away from children and pets.
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 for more details about how to safely discard your product.Information last revised October 2019. Copyright(c) 2019 First Databank, Inc.
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