Quốc gia: Hoa Kỳ
Ngôn ngữ: Tiếng Anh
Nguồn: NLM (National Library of Medicine)
ACYCLOVIR (UNII: X4HES1O11F) (ACYCLOVIR - UNII:X4HES1O11F)
Northwind Pharmaceuticals, LLC
ACYCLOVIR
ACYCLOVIR 400 mg
ORAL
PRESCRIPTION DRUG
Herpes Zoster Infections: Acyclovir tablets, USP are indicated for the acute treatment of herpes zoster (shingles). Genital Herpes: Acyclovir tablets, USP are indicated for the treatment of initial episodes and the management of recurrent episodes of genital herpes. Chickenpox: Acyclovir tablets, USP are indicated for the treatment of chickenpox (varicella). Acyclovir tablets are contraindicated for patients who develop hypersensitivity to acyclovir or valacyclovir.
Acyclovir tablets USP, 400 mg containing 400 mg of acyclovir USP are pink, shield shaped, flat tablets debossed with 'J' on one side and '49' in triangle on the other. They are supplied as follows: Bottles of 14 tablets NDC 51655-300-84 Bottles of 15 tablets NDC 51655-300-54 Bottles of 25 tablets NDC 51655-300-23 Bottles of 30 tablets NDC 51655-300-52 Bottles of 35 tablets NDC 51655-300-35 Bottles of 60 tablets NDC 51655-300-50 Bottles of 90 tablets NDC 51655-300-26 Store between 15º and 25ºC. Protect from light and moisture. Manufactured for: Camber Pharmaceuticals, Inc. Piscataway, NJ 08854 By:HETERO TM Hetero Labs Limited, Unit V, Polepally, Jadcherla, Mahabub nagar-509 301, India. Revised: 02/2020
Abbreviated New Drug Application
ACYCLOVIR- ACYCLOVIR TABLET NORTHWIND PHARMACEUTICALS, LLC ---------- ACYCLOVIR TABLETS, USP RX ONLY DESCRIPTION Acyclovir is a synthetic nucleoside analogue active against herpesviruses. Acyclovir tablets, USP is a formulation for oral administration. Each Acyclovir Tablet contains 400 mg or 800 mg of acyclovir. In addition, each tablet contains the inactive ingredients colloidal silicon dioxide, magnesium stearate, microcrystalline cellulose, povidone and sodium starch glycolate. The 400 mg and 800 mg tablet also contains ferric oxide and FD&C blue lake # 2 Indigo carmine AL, respectively. Acyclovir USP is a white to off white crystalline powder, slightly hygroscopic with the molecular formula C H N O and a molecular weight of 225.20. The maximum solubility in water at 37°C is 2.5 mg/mL. The pka's of acyclovir are 2.27 and 9.25. The chemical name of acyclovir is 6H-Purin-6-one, 2-amino-1,9-dihydro-9-[(2- hydroxyethoxy)methyl]-. It has the following structural formula: VIROLOGY MECHANISM OF ANTIVIRAL ACTION: Acyclovir is a synthetic purine nucleoside analogue with _in vitro_ and _in vivo_ inhibitory activity against herpes simplex virus types 1 (HSV-1), 2 (HSV-2), and varicella-zoster virus (VZV). The inhibitory activity of acyclovir is highly selective due to its affinity for the enzyme thymidine kinase (TK) encoded by HSV and VZV. This viral enzyme converts acyclovir into acyclovir monophosphate, a nucleotide analogue. The monophosphate is further converted into diphosphate by cellular guanylate kinase and into triphosphate by a number of cellular enzymes. _In vitro_, acyclovir triphosphate stops replication of herpes viral DNA. This is accomplished in 3 ways: 1) competitive inhibition of viral DNA 8 11 5 3 polymerase, 2) incorporation into and termination of the growing viral DNA chain, and 3) inactivation of the viral DNA polymerase. The greater antiviral activity of acyclovir against HSV compared with VZV is due to its more efficient phosphorylation by the viral TK. ANTIVIRAL ACTIVITIES: The quantitative r Đọc toàn bộ tài liệu