I've been taking Niaspan for several years and have had occasions of flushing that wakes me up at night but nothing really dramatic. What I have learned is that taking the aspirin a half hour before the Niaspan is crucial. Last spring I hurt my knee, and my MD suggested that I take Naproxen sodium for awhile and skip the aspirin at night before the Niaspan. And surprise! I had flushing every night...until I realized that the aspirin really had made a difference! Now I make sure to take it and no more flushing. (The itching sounds awful...I sympathize with all who have that.)