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You are here : 3-RX.com > Drugs & Medications > Quick Drug Information (DrugNotes) > Griseofulvin (Oral)

Griseofulvin (By Mouth)

Griseofulvin (gri-see-oh-FUL-vin)

Treats various types of fungus infections such as ringworm, "jock itch," and athlete's foot. Belongs to a class of drugs called antifungals.

Brand Name(s):

Grifulvin V, Gris-PEG, Fulvicin P/G
There may be other brand names for this medicine.

When This Medicine Should Not Be Used:

You should not use this medicine if you have ever had an allergic reaction to griseofulvin or penicillin.

How to Use This Medicine:

Tablet, Capsule, Liquid

  • Your doctor will tell you how much medicine to take and how often.
  • Keep taking this medicine even if your symptoms are gone. If you stop taking griseofulvin too soon, your infection may return.
  • You may take your medicine with food or milk to avoid stomach irritation.
  • Shake the oral liquid well just before each use. Measure your dose with a measuring spoon.

If a dose is missed:

  • Take your medicine as soon as you remember that you have missed your dose.
  • If it is almost time for your next dose, wait until then to take the medicine and skip the missed dose.
  • You should not use two doses at one time.
How to Store and Dispose of This Medicine:

  • Keep your medicine in the original tightly closed container, away from moisture and direct light. Do not freeze.
  • Keep all medicine away from children.
Drugs and Foods to Avoid:

Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.

  • Check with your doctor if you are taking blood thinners (such as Coumadin®) or birth control pills. Birth control pills with estrogen may not work as well while taking griseofulvin. Use a back-up method of birth control while taking this medicine.
  • Avoid drinking alcohol while taking this medicine.
Warnings While Using This Medicine:

  • If you are pregnant or breastfeeding, talk to your doctor before taking this medicine. Let your doctor know if you become pregnant while taking griseofulvin.
  • Keep yourself clean to help control infection and prevent reinfection.
  • Avoid sunlight and sun lamps. Wear protective clothing or sunscreen when you are outdoors.
  • This medicine may cause drowsiness. Be careful when driving a car or using machinery.
Possible Side Effects While Using This Medicine:

Call your doctor right away if you notice any of these side effects:

  • Skin rash or itching
  • Tingling in hands and feet
  • Yellow skin and eyes
  • White spots on the tongue or inside the cheeks

If you notice these less serious side effects, talk with your doctor:

  • Dizziness
  • Stomach upset or diarrhea
If you notice other side effects that you think are caused by this medicine, tell your doctor.

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