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  • Title: Safety and tolerability of high-dose formoterol (via Aerolizer) and salbutamol in patients with chronic obstructive pulmonary disease.
    Author: Rosenkranz B, Rouzier R, Kruse M, Dobson C, Ayre G, Horowitz A, Fitoussi S.
    Journal: Respir Med; 2006 Apr; 100(4):666-72. PubMed ID: 16303295.
    Abstract:
    To evaluate the safety and tolerability of high-dose formoterol and salbutamol in patients with chronic obstructive pulmonary disease (COPD). In this two-way crossover, double-blind, double-dummy study, 17 adults with mild-to-moderate COPD were randomized to receive either formoterol 24 microg (2 x 12 microg via Aerolizer), or salbutamol 600 microg (6 x 100 microg via metered-dose inhaler), and the appropriate double-dummy q.i.d. at 4-h intervals for 3 consecutive days (total daily dose: 96 and 2400 microg, respectively). After a 4-7-day washout period, patients were switched to the other treatment. Treatment with high-dose formoterol and salbutamol was equally well tolerated, with no reports of serious adverse events. Both agents were associated with decreased plasma potassium (mean minimum values: 3.4 and 3.3 mmol/l for formoterol and salbutamol, respectively; P=0.914), increased serum glucose (mean maximum values: 9.0 and 8.7 mmol/l, respectively; P=0.373), and small increases in mean QTc interval (mean maximum 439 ms with both treatments; P=0.813). No clinically relevant between-treatment differences in adverse events or laboratory values occurred. Both drugs improved lung function (mean maximum forced expiratory volume in 1s [FEV(1)] 2.6 l with both treatments; P=0.624), with the improvement being significantly greater with formoterol than with salbutamol on all 3 days of treatment (mean area under the curve [AUC](0-24 h) of FEV(1) formoterol vs. salbutamol on days 1-3, all P<0.05). High-dose formoterol via Aerolizer (up to 96 microg/day) has a comparable tolerability profile to that of salbutamol in patients with mild-to-moderate COPD.
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