I am almost finished with a 10 day course of Lecaquin. Since the first day I have experienced nausea, a bitter taste in my mouth, insomnia, and some agitation and anxiety. This morning, after my 7th dose yesterday evening, I found myself wide awake at 4:45 with my arms and legs aching as if I had the flu. The doctors at my Family Physician won't see the problems as side effects, they attribute them to my already present hypothyroidism. Never, ever again will I or anyone in my family take this drug, unless there are absolutely no other options.