The present disclosure provides solid forms of the hydrochloride salt of (5-[3-(3-Hydroxyphenoxy)azetidin-1-yl]-5-methyl-2,2-diphenylhexanamide (Compound-A). In particular, an amorphous form, an ethyl acetate solvate form, a methyl n-butyl ketone solvate form, an anisole solvate form, an isobutyl acetate solvate form, a n-butyl acetate solvate form, a toluene solvate form, a 4-methyl-2-pentanol solvate form, a n-propyl acetate solvate form, a xylene solvate form, Form VIII and Form IX of the salt are disclosed. Processes for the preparation of each of the disclosed forms are also provided.
