Dergi Ara >>
Yıl:1996; Cilt: 1; Sayı: 1>> Özet
Depresyon Dergisi; 1996;1(1):33-37
Yeni Bir Antidepresan: Venlafaksin
E Köroğlu
Gazi Üniversitesi Tıp Fakültesi Psikiyatri Anabilim Dalı
Venlafaksin (Efexor®) fenetilamin türevi bisiklik bir antidepresandır. Olağan dozu, bölünmüş 2-3 dozda, ağızdan verilmek üzere 75-375 mg/gün arasında değişir. Venlafaksin, oral uygulamadan 1-2 saat sonra doruk serum düzeylerine erişir. Başlıca aktif metaboliti olan O-desmetilvenlafaksinin doruk düzeylerine 3-4 saat sonra erişilir. Tedaviye başlandıktan 2 hafta gibi kısa bir süre sonra semptomatik düzelme görülür. Venlafaksin % 30 oranında proteinlere bağlanır. Dağılım hacmi 6-7 lt/kg'dır. Venlafaksin ilk geçiş metabolizmasına uğrayarak venlafaksine benzer etkinlik gösteren O-desmetilvenlafaksine dönüşür. Etkinliği daha düşük olan iki aktif metaboliti daha vardır. Yüzde 1'iyle 10'u değişmeden idrarla atılır. Venlafaksinin eliminasyon yarı ömrü yaklaşık 3-4 saattir; O-desmetilvenlafaksinin yarı ömrü yaklaşık 10 saattir. En sık görülen yan etkileri bulantı, anoreksiya, sedasyon ve sersemlik hissidir. Diğer, daha az karşılaşılan yan etkileri palpitasyon, yorgunluk, baş ağrısı, konstipasyon, anksiyete, cinsel işlev bozuklukları, terleme ve kan basıncında, kalp hızında ve serum lipidlerinde artmadır. Venlafaksin depresyonun tedavisinde yararlı olan bir ilaçtır. Obsesif kompulsif bozuklukta da yararlı olabilir.

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