Spiriva (tiotropium) is a medication used to help control chronic obstructive pulmonary disease (COPD) and asthma. There are two different Spiriva inhalers: Spiriva Respimat is a metered-dose inhaler, and Spiriva HandiHaler is a device that you place a capsule of medication into before you take the medication. The typical dosage for Spiriva (tiotropium) is two inhalations once a day, but the dose depends on the reason you're using it. Side effects include dry mouth, cough, and upper respiratory tract infections. Only Spiriva HandiHaler is also available as a generic version.