I'm taking 8mg Buprenorphine 2x's a day and Buspar 5mg 3 x's a day and I'm exhausted now. In the beginning I was just taking Buprenorphine and felt fine, then started Buspar later and felt fine. Actually I felt great, it gave me energy and my anxiety went down immediately. Now all of the sudden I am so tired I fall asleep sitting up watching t.v., and I'm having a hard time sleeping at night. Anyone else take these meds together?