The present invention relates to methods for weight management that utilize modified-release dosage forms comprising ( R )-8-chloro-1-methyl-2,3,4,5-tetrahydro-1 H -3-benzazepine salts and crystalline forms thereof. The present invention further relates to ( R )-8-chloro-1-methyl-2,3,4,5-tetrahydro-1 H -3-benzazepine salts, crystalline forms thereof and modified-release dosage forms comprising them.