Tiotropiumdrug info

The active component of SPIRIVA RESPIMAT is tiotropium. The drug substance, tiotropium bromide monohydrate, is an anticholinergic with specificity for muscarinic receptors. It is chemically described as (1α, 2β, 4β, 5α, 7β)-7-[(Hydroxydi-2-thienylacetyl)oxy]-9,9-dimethyl-3-oxa-9-azoniatricyclo[3.3.1.0 2,4 ] nonane bromide monohydrate. It is a synthetic, non-chiral, quaternary ammonium compound. Tiotropium bromide is a white or yellowish white powder. It is sparingly soluble in water and soluble in methanol.

The structural formula is: Tiotropium bromide (monohydrate) has a molecular mass of 490.4 and a molecular formula of C 19 H 22 NO 4 S 2 Br ∙ H 2 O. The drug product, SPIRIVA RESPIMAT, is composed of a sterile, aqueous solution of tiotropium bromide filled into a 4.5 mL plastic container crimped into an aluminum cylinder (SPIRIVA RESPIMAT cartridge) for use with the SPIRIVA RESPIMAT inhaler. Excipients include benzalkonium chloride, edetate disodium, hydrochloric acid, and water for injection. The SPIRIVA RESPIMAT cartridge is only intended for use with the SPIRIVA RESPIMAT inhaler. The RESPIMAT inhaler is a hand held, pocket sized oral inhalation device that uses mechanical energy to generate a slow-moving aerosol cloud of medication from a metered volume of the drug solution. When used with the SPIRIVA RESPIMAT inhaler, each cartridge containing 4 grams of sterile aqueous solution delivers the labeled number of metered actuations after preparation for use. Each dose (one dose equals two actuations) from the SPIRIVA RESPIMAT inhaler delivers 2.5 mcg or 5 mcg of tiotropium (equivalent to 3.124 mcg or 6.247 mcg, respectively, of tiotropium bromide monohydrate) in 22.1 mcL from the mouthpiece. As with all inhaled drugs, the actual amount of drug delivered to the lung may depend on patient factors, such as the coordination between the actuation of the inhaler and inspiration through the delivery system. The duration of inspiration should be at least as long as the spray duration (1.5 seconds). Prior to first use, the SPIRIVA RESPIMAT cartridge is inserted into the SPIRIVA RESPIMAT inhaler and the unit is primed. When using the unit for the first time, patients are to actuate the inhaler toward the ground until an aerosol cloud is visible and then repeat the process three more times. The unit is then considered primed and ready for use. If not used for more than 3 days, patients are to actuate the inhaler once to prepare the inhaler for use. If not used for more than 21 days, patients are to actuate the inhaler until an aerosol cloud is visible and then repeat the process three more times to prepare the inhaler for use. Chemical Structure