'Lyophilization' is often preferred over 'desiccation' in preserving pharmaceuticals because:

Lyophilization adds more moisture than desiccation.

Lyophilization preserves biological material without damaging its structure or potency, unlike dessication.

Lyophilization involves a reduced number of complex procedures compared to desiccation.

Lyophilization completely removes bacteria, in contrast to dessication, which does not ensure complete removal.