Страна: Нова Зеландия
Език: английски
Източник: Medsafe (Medicines Safety Authority)
Metronidazole 0.5%
Orion Laboratories (NZ) Ltd
Metronidazole 0.5%
0.5 %
Topical gel
Active: Metronidazole 0.5%
Tube, 10 g
Prescription
Prescription
Gedeon Richter Ltd
Package - Contents - Shelf Life: Tube, - 10 g - 36 months from date of manufacture stored at or below 25°C
1991-08-08
Metronidazole Gel Page 1 of 4 NEW ZEALAND DATA SHEET NAME OF MEDICINE METRONIDAZOLE GEL A sterile gel containing Metronidazole BP 0.5%, the pH of the gel is 4.5 to 6.0. PRESENTATION Metronidazole is 2-(2-methyl-5-nitroimidazol-l-yl)ethanol. C 6 H 9 N 3 O 3 MW = 171.2 CAS Number = 443-48-1 Metronidazole is a white or yellowish, crystalline powder. It is slightly soluble in water, in alcohol, in acetone and in dichloromethane. It is very slightly soluble in ether. It darkens on exposure to light and should be protected from light. USES ACTIONS Metronidazole is a synthetic nitroimidazole derivative. It is an anaerobic antibacterial agent and an antiprotozoal (trichomoniasis, amoebiasis, giardiasis). However, the mechanisms by which Metronidazole Gel acts in reducing inflammatory lesions of rosacea are unknown, but may include an antibacterial and/or anti-inflammatory effect. PHARMACOKINETICS The absorption of metronidazole following topical administration is negligible. Studies using Rozex Gel, another metronidazole (0.75%) gel preparation, have shown that following topical administration of 1 gram of a metronidazole gel (containing 7.5 mg of metronidazole) to the face of 10 rosacea patients, serum concentrations of metronidazole ranged from undetectable to a maximum of 66 nanograms per mL. This concentration is approximately 100 times less than concentrations afforded by a single 250 mg tablet. The serum metronidazole concentrations were below the detectable limits of the assay at the majority of time points in all patients. Three of the patients had no detectable serum concentrations of metronidazole at any time point. The mean dose of the gel applied during clinical studies was 600 mg which repre Прочетете целия документ