Allegra and headache

Wow...sorry to hear about all these adverse side effects. To state the other side of the story, I've been taking Allegra D 12 hour formula for about 6 monhts now. I take it once a day...just before bedtime and I've had no problems falling alseep, no restlessness (I do get restless when I use other over the counter anthistamines), no headache, no backache, no dry mouth...in fact, when I stop taking it I notice my allergies and sinusitis get worse.