Table II.

Solubility Profile of Plain IRB, Dry Powder Admixture, and Inclusion Complexes of IRB, βCD, and Water-Soluble Polymers

Sample	Solubility in distilled water at 25°C (n = 3; μg/ml)
IRB	67.8
IRB–βCD (dry powder admixture)	109.8
IRB–βCD–PEG 4000 (dry powder admixture)	189.7
IRB–βCD–PVP K-90 (dry powder admixture)	210.4
IRB–βCD (inclusion complexes)	137.6
IRB–βCD–PEG 4000 (inclusion complexes)	331.19
IRB–βCD–PVP K-90(inclusion complexes)	345.63