How hard would it be to get chlorpheniramine maleate out of some pills? There's only 4mgs in them.

Darryl is interested in the whatsgoingson with this question as well. He read a couple of write ups that stated, "a six to twelve hour xylene soak would remove the psuedo HCL from most of the crud in basic generic pills with the antihistamine?" Was the writer trying to suggest that the antihistamine is only slightly soluble in the xylene because darryl doesn't understand what the benefits of a "six to twelve hour soak would be? Would someone shed intelligent light on this process as to credit or discredit it please?