"i have been taking buspar for a week now, and the next day i felt a difference. actually the next three to four days i felt a difference. but after that i started having some anxiety again and irritability. i was concerned that it had stopped working. i went to my doctor and she told me to keep up with it. that it takes some people 2 months to start working. i said well i have been waiting my whole life for something to work so 2 months is worth the wait. so if you are new to trying the this i recommend waiting. the side effects for me were pretty bad. i had flu like symptoms, constipation, insomnia, the shakes, muscle spasms, but for the most part they have started to go away. i have found being very consistent with taking it helps."