Effects of N-acetylcysteine on outcomes in chronic obstructive pulmonary disease (Bronchitis Randomized on NAC Cost-Utility Study, BRONCUS): a randomised placebo-controlled trial.

Background: Increased oxidative stress is important in the pathogenesis of chronic obstructive pulmonary disease (COPD). We postulated that treatment with the antioxidant N-acetylcysteine would reduce the rate of lung-function decline, reduce yearly exacerbation rate, and improve outcomes.

Methods: In a randomised placebo-controlled study in 50 centres, 523 patients with COPD were randomly assigned to 600 mg daily N-acetylcysteine or placebo.

Analgesia with ibuprofen arginate versus conventional ibuprofen for patients with dysmenorrhea: a crossover trial.

Background: Dysmenorrhea produces painful abdominal cramps that can disrupt the personal lives and productivity of women.

Objective: The aim of this study was to compare the analgesic efficacy, including onset and duration of pain relief, peak effect, and total effect, and tolerability of ibuprofen arginate with those of conventional ibuprofen in patients with moderate to severe pain associated with primary dysmenorrhea.

Methods: Patients were administered a single dose of ibuprofen arginate (200 or 400 mg), conventional ibuprofen (200 or 400 mg), or placebo during each of 5 menstrual cycles in a single-center, double-blind, randomized, double-dummy, 5-cycle, crossover study.

Effects of N-acetylcysteine on dense cell formation in sickle cell disease.

The extent to which dense and irreversible sickle cells (ISCs) contribute to vaso-occlusive episodes in sickle cell disease remains unclear. N-Acetylcysteine (NAC) inhibits dense cell and ISC formation in sickle erythrocytes in vitro and restores glutathione levels toward normal. A phase II double-blind randomized clinical trial was completed to determine the efficacy of NAC in decreasing dense cell and ISC formation, and vaso-occlusive episodes in sickle cell disease.

Ibuprofen arginate provides effective relief from postoperative dental pain with a more rapid onset of action than ibuprofen.

Ibuprofen is a safe and effective analgesic, but some formulations have a slow onset of action. Ibuprofen arginate is a rapidly absorbed salt designed to promote more rapid onset of analgesia. A clinical trial was conducted in 226 patients with postoperative dental pain to assess the analgesic efficacy and speed of onset of the arginine salt of ibuprofen compared with one of the commercially available forms of ibuprofen.

A randomized, double-blind, placebo-controlled comparison of the analgesic efficacy, onset of action, and tolerability of ibuprofen arginate and ibuprofen in postoperative dental pain.

Background: Because of its enhanced pharmacokinetic characteristics, ibuprofen arginate might be expected to provide faster pain relief than standard ibuprofen formulations in patients experiencing acute pain.

Objective: This study assessed the analgesic efficacy, speed of onset, and tolerability of ibuprofen arginate compared with a commercially available form of ibuprofen in patients with postoperative dental pain.

Methods: Patients were randomized to receive ibuprofen arginate 200 or 400 mg, ibuprofen 200 or 400 mg, or placebo in this multicenter, double-blind, double-dummy, parallel-group trial.

A controlled comparative study of ibuprofen arginate versus conventional ibuprofen in the treatment of postoperative dental pain.

The analgesic efficacy of an arginine salt of ibuprofen was compared to one of the commercially available forms of conventional ibuprofen in a 500-patient clinical trial in postoperative dental pain. Patients were administered a single dose of ibuprofen arginate (200 mg or 400 mg), conventional ibuprofen (200 mg or 400 mg), orplacebo in this double-blind, randomized, parallel-group trial. Results demonstrated that ibuprofen arginate was a safe and effective analgesia that was superior to conventional ibuprofen in both the amount of pain relief achieved and the time to onset of pain relief.