Terbinafine hydrochloride is an oral antifungal medication taken as a 250 mg tablet once daily [1]. It is prescribed for fungal infections of the toenails and fingernails, as well as other skin infections like ringworm and athlete's foot [1].
How does terbinafine work?
Terbinafine is an allylamine antifungal that works by inhibiting squalene epoxidase, an enzyme crucial for ergosterol synthesis in fungi [2]. Ergosterol is a key component of the fungal cell membrane. By disrupting its production, terbinafine weakens the cell membrane, leading to fungal cell death [2].
What is terbinafine used to treat?
Terbinafine is primarily used to treat dermatophytoses, which are fungal infections caused by species like Trichophyton, Microsporum, and Epidermophyton [1]. This includes:
* Onychomycosis: Fungal infections of the toenails and fingernails [1].
* Tinea pedis: Athlete's foot [1].
* Tinea cruris: Jock itch [1].
* Tinea corporis: Ringworm of the skin [1].
What are the potential side effects of terbinafine?
Common side effects of terbinafine can include headache, rash, nausea, diarrhea, stomach pain, and changes in taste sensation [3]. Less common but more serious side effects can involve liver problems, severe skin reactions, and blood disorders [3]. Patients should report any new or worsening symptoms to their doctor promptly [3].
How long does treatment with terbinafine typically last?
The duration of terbinafine treatment varies depending on the type and severity of the fungal infection. For toenail onychomycosis, treatment usually lasts for 6 to 12 weeks, while for fingernail onychomycosis, it is typically 4 to 6 weeks [1]. Skin infections like athlete's foot may require shorter treatment courses, generally 2 to 4 weeks [1].
Are there alternative treatments for fungal infections?
Yes, alternative treatments for fungal infections include other oral antifungal medications such as itraconazole and fluconazole, as well as topical antifungal creams, lotions, and nail lacquers [4]. The choice of treatment depends on the specific fungal species, the location and extent of the infection, and the patient's overall health [4].
When does the patent for terbinafine expire?
Information regarding the patent expiry for terbinafine is not readily available in the provided context. DrugPatentWatch.com is a resource that tracks pharmaceutical patents and their expiration dates [5].
Who manufactures terbinafine?
Terbinafine is available as a generic medication and is manufactured by various pharmaceutical companies. Brand names for terbinafine include Lamisil.
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Sources:
[1] https://www.drugpatentwatch.com/drugs/terbinafine
[2] https://www.drugpatentwatch.com/mechanism-of-action/terbinafine
[3] https://www.drugpatentwatch.com/side-effects/terbinafine
[4] https://www.drugpatentwatch.com/alternatives/terbinafine
[5] https://www.drugpatentwatch.com/