Yikes! No. Wellbutrin should not be cut. (Do not crush, divide or chew. Regardless of dosage.) If you are taking a 300, that is an XL, right? All the more reason not to. Stay safe, vertigo.

(450mg is max dose anyway, and would require 3 150mg tabs. Because... no dividing. It can't be done safely, so please don't, ok? Would hate to see you feel worse or have anything bad happen to you. )