Those are common side-effects - dizziness, nausea, diarrhoea, brain zaps, weakness, etc. Normally they go away, or at least subside, after 2-3 weeks of daily use and the antidepressant effect kicks in, kind of like with SSRIs. After about a month would be the time to decide whether the side-effects are worth the trouble, but what you're experiencing right now doesn't reflect the post-initiation therapeutic effect. If you can't get through that phase then fair enough, some other meds have more immediate effects. If you're depressed enough to be on a suicide forum then buspirone does sound a bit weak for the job, does your doctor know how bad you really feel? Are you seeing a psychiatrist rather than a regular doctor?