I have taken 50 mg every night for about 4 years. Last week I decided I need to get off and started the weaning process, cutting back by half to 25 mg/night. This is day 7 and I feel AWFUL - extreme dizziness/ light-headedness, muscle weakness, insomnia, anxiety, mood swings, crying spells, chest tightness. This morning I felt like I was having a heart attack. I want to stay the course. Any hopeful comments?