Grifulvin V (Griseofulvin Microsize) Drug Information: Clinical Pharmacology

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May 27, 2012

Grifulvin V

Fungal Nails »

What other conditions can be mistaken for fungal nails?

Here are some other conditions you may have instead of fungal nails:

Lines and ridges: These are common and may be considered normal. They may worsen during pregnancy. A large groove down the center of the nail can be caused by nail biting.
Senile nails: As you age, the nails become brittle, develop ridges and separation of the nail layers at the end of the nail. Try to avoid cleaning solutions, and don't soak the nails in water to avoid worsening of the problem.
Whitish or yellowish nails due to onycholysis. This means separation of the nail from the nail bed. The color you see is air beneath the nail. The treatment is to trim the nail short, don't clean under it, polish if you want to hide the color, and wait two to three months.
Red or black nails due to a hematoma, or blood under the nail, usually occur from trauma ...

Read the Fungal Nails article »

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Grifulvin V

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CLINICAL PHARMACOLOGY

GRIFULVIN V (griseofulvin microsize) acts systemically to inhibit the growth of Trichophyton, Microsporum, and Epidermophyton genera of fungi. Fungistatic amounts are deposited in the keratin, which is gradually exfoliated and replaced by noninfected tissue.

Griseofulvin absorption from the gastrointestinal tract varies considerably among individuals, mainly because of insolubility of the drug in aqueous media of the upper G.I. tract. The peak serum level found in fasting adults given 0.5 gm occurs at about four hours and ranges between 0.5 and 2.0 mcg/mL.

It should be noted that some individuals are consistently "poor absorbers" and tend to attain lower blood levels at all times. This may explain unsatisfactory therapeutic results in some patients. Better blood levels can probably be attained in most patients if the tablets are administered after a meal with a high fat content.

Last reviewed on RxList: 9/16/2008
This monograph has been modified to include the generic and brand name in many instances.