Patent ID: 7947744

Claim:
A method of reducing degradation of R,R-formoterol L-tartrate salt in a dry powder inhalation device, said method comprising providing a pharmaceutical product which comprises: a) a dry powder inhalation device; b) an effective amount of a sorbent material; and c) a pharmaceutical composition within said device comprising: (i) R,R-formoterol L-tartrate salt; and (ii) ciclesonide; and sealing components a), b) and c) in a package having an enclosed volume within which said device, said sorbent material and said pharmaceutical composition are situated; wherein a component of said dry powder inhalation device leaches a substance that accumulates within said sealed package causing degradation of said R,R-formoterol L-tartrate salt; wherein said sorbent material is selected from the group consisting of: a molecular sieve, activated clay, charcoal, activated alumina, silica, a zeolite, a bauxite, and a mixture thereof; and wherein said sorbent material adsorbs or absorbs, or a combination thereof, the substance that leaches so as to reduce or eliminate the formation of adducts with R,R-formoterol L-tartrate salt.