Risperdal really did not help me sleep either, just made me dizzy and tired. What other medications is he on? Risperdal is not typically used alone, but as a booster to help other meds. I threw mine in the trash after three days, due to it making me so dizzy. The doctor only gave me a sample to see if it would help me sleep so it is not a medication I had to continue. I am already on an excellent combo of Lithium/Wellbutrin and quite stable. So by no means am I recommending him to stop taking his Risperdal. However, he needs good medication(s) to help balance both ends of the spectrum, mania and depression. Bipolars are usually have chronic insomnia and I an not an exception to that rule. I have always struggled to sleep since childhood. I use a natural solution to help me sleep. I have 5mg dissolving melatonin, approved by my doctor, and a sound machine. It plays ocean waves and matches my breathing, which quiets my racing thoughts, which seem to be there no matter how stable I am. They are under control now. I usually only have two racing thoughts compared to 8-9 when I am very manic. Anyhow, I have tried EVERYTHING for sleep and I mean that seriously! I love to get good sleep. My best solution yet is the melatonin and noise machine. I did some research on melatonin and found that a lot of bipolars are depleated of natural melatonin compared to normal folk. Maybe this helps you? Best of luck.