性状及成分控释片,每片含无水茶碱100,200或300 mg。适应症解除和/或防止慢性支气管炎和肺气肿引起的气喘和可逆性支气管痉挛。禁忌症活动性消化性溃疡病人和有潜在癫痫发作的个体(除非同时接受适当的抗惊厥药物治疗)禁用。用法一般认为,茶碱血浓维持在10μg/ml至20μg/ml时产生最佳效应(即:最大药效和最小中毒危险的血浆浓度)。就安全而言,20μg/ml血浓水平作为临界值(高于此值就很可能产生毒性)仍是恰当的,但另 Traits and components controlled release tablets, each containing 100,200 or 300 mg anhydrous theophylline. Indications relieve and / or prevent asthma and reversible bronchospasm caused by chronic bronchitis and emphysema. Contraindications Patients with active peptic ulcer disease and individuals with a potential seizure unless banned with the appropriate anticonvulsant medication. Usage It is generally accepted that theophylline concentration remains optimal at 10 μg / ml to 20 μg / ml (ie, plasma concentration that is maximally effective and minimally intoxicated). In terms of safety, it is still appropriate to have a blood level of 20 μg / ml as a cutoff (above which it is likely to produce toxicity), yet another