The DDDs are based on the maintenance treatment of asthma. The DDDs for tiotropium bromide and umeclidinium bromide are based on treatment of COPD (Chronic Obstructive Pulmonary Disease). The DDD for tiotropium bromide inhalation powder is based on tiotropium, delivered dose. The DDD for aclidinium bromide inhalation powder is based on aclidinium, delivered dose. The DDD for glycopyrronium bromide inhalation powder is based on glycopyrronium, delivered dose. The DDD for umeclidinium bromide inhalation powder is based on umeclidinium, delivered dose.
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