Patent ID: 8324236

Claim:
A method of treating a mammal having a medical condition ameliorated by treatment with a mu opioid receptor antagonist, wherein the medical condition is opioid-induced bowel dysfunction or post-operative ileus, the method comprising administering to the mammal a therapeutically effective amount of a pharmaceutical composition comprising a pharmaceutically-acceptable carrier and a crystalline solid form of (S)-4-((2S,3S)-7-carbamoyl-1,1-diethyl-3-methoxy-1,2,3,4-tetrahydronaphthalen-2-ylamino)-2-cyclohexylmethyl-butyric acid, wherein the crystalline solid form is characterized by an x-ray powder diffraction pattern having diffraction peaks at 2θ values of 6.92±0.20 and 15.34±0.20, and having two or more diffraction peaks at 2θ values selected from 10.24±0.20, 11.48±0.20, 12.32±0.20, 13.46±0.20, 14.04±0.20, 17.30±0.20, 18.06±0.20, 20.30±0.20, 21.42±0.20, 23.48±0.20, 25.54±0.20, 26.96±0.20, 29.30±0.20, and 30.72±0.20.