The question remains, is the transition to Form II observable in tablets compressed to pressures in excess of 150 MPa as was proposed? From the data, we observed a stark change to the diffraction attributable to Form II at 283 MPa and beyond. At 283 MPa, there is an increase in the non-filtered powder diffraction for Form II (red, Figure ) which may be accounted for by the transformation of the larger annealed crystals from Form I to Form II. The compaction pressure at which we observe the changes correlates reasonably well with those from our initial neutron diffraction and terahertz spectroscopy experiments. At higher tableting pressures (440 MPa) we observe less streaking for both Form I and II suggesting that the particles undergo fragmentation into smaller particles providing better powder diffraction. There is clear evidence of a greater proportion of Form II across the tablet at this higher compaction pressure (more intense color Figure ).