I have been taking 1,000 mg for about 6 month to lower my LDL to ...

I have been taking 1,000 mg for about 6 month to lower my LDL to 70 mg from 107 mg. I also take 81 mg aspirin about 30 min. before I take my 1,000 mg Niaspan. My HDL and triglycerides are fine. Lipitor did not lower my LDL and Vitorin caused the tingling in my right arm. After discontinuing Vitorin, I was put on Niaspan. The flushing is OK but the itching on my back was horrible not to mention insomnia. Itching comes and goes but what worries me that recently I have developed the pain in my toes, (excluding the big toe) and when I get out of my bed my feet do not want to support me for at least 5-6 steps. I have been always able to walk for miles! I realized that one of the side effects of Niaspan is elevated concentration of uric acid (gout) or glucose (diabetic condition). Any similar side effects?