Wellbutrin will not be effective for anxiety because it increases your catecholamine levels (dopamine, epinephrine, and norepinephrine) which are all excitatory neurotransmitters. Wellbutrin is usually prescribed for lethargic depression, which is not necessarily a sad or agitated depression, but a flat, a motivated, fatigued, low energy, and an overall feeling of the living dead. Serotonin increasing antidepressants like SSRIs are the ones effective for the sad and agitated depression, as well as anxiety.
No this side-effect is not common in people with no history of suicidal thought with Wellbutrin.
Wellbutrin will block the reuptake of dopamine and norepineprhine as well as being a noncompetitive α3β4 nicotinic antagonist. This is why it is very efficient with people desiring to stop smoking.
M4