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Lamisil

Terbinafine hydrochloride, sold as Lamisil tablets in the U.S., is often prescribed for the treatment of onychomycosis of the toenail or fingernail due to dermatophytes (Tinea unguium). more...

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It is also sold as a 1% cream or powder for use on suface infections such as jock itch (Tinea cruris) or athlete's foot (Tinea pedis).

Nail fungus infections live deep under the nail in the nail bed. Surface treatments may not be able to reach it in sufficient amounts, so terbinafine hydrochloride is given orally in tablet form, which is absorbed through the bloodstream to reach the infection; this method can cause hepatotoxicity, or liver damage, as well as other serious side effects, so those taking Lamisil tablets often have blood screenings every month. Many health insurance companies consider these infections to be a cosmetic problem, and either do not cover the cost of the months-long course of Lamisil, which can run into the thousands of dollars, or recommend use of less expensive alternatives like fluconazole.

The tablets contain the synthetic allylamine antifungal compound terbinafine hydrochloride, which is a white fine crystalline powder that is freely soluble in methanol and methylene chloride, soluble in ethanol, and slightly soluble in water. Chemically, it is (E)-N-(6,6-dimethyl-2-hepten-4-ynyl)-N-methyl-1- naphthalenemethanamine hydrochloride. The empirical formula C21H26CIN with a molecular weight of 327.90

  • Active Ingredients: Terbinafine hydrochloride (equivalent to 250 mg base)
  • Inactive Ingredients: Colloidal silicon dioxide, Hydroxypropyl methylcellulose USP, Sodium starch glycolate, Magnesium stearate, Microcrystalline cellulose.

Read more at Wikipedia.org


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Lamisil gets FDA OK for athlete's foot switch
From Drug Store News, 4/26/99

SUMMIT, N.J. -- Novartis Consumer Health has received Food and Drug Administration approval to switch its Lamisil Cream for the treatment of athlete's foot from prescription to OTC status.

Lamisil's active ingredient is terbinafine in a 1 percent strength--a strength it will carry into OTC status. After the switch, Lamisil Cream will be the only OTC medication that cures athlete's foot in one week, according to the company; other OTC products require a four-week regimen. "Until now, physicians shared our patients' frustration with athlete's foot," said Nardo Saias, M.D., acting director, dermatology, Mount Sinai hospital, Miami Beach, Fla. "Instead of continuing treatment for the full four-week time period, many patients would stop using the treatment once symptoms were relieved, often leading to a recurrence of the condition."

The Rx-to-OTC switch is also significant in the antifungal category since it marks the only switch in the athlete's foot category in nearly a decade. Novartis also markets Lamisil tablets, a prescription treatment for nail fungal disease.

COPYRIGHT 1999 Lebhar-Friedman, Inc.
COPYRIGHT 2000 Gale Group

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