I have severe RLS and take 1 mg. tabs during the day if I need to sit for more than 20 minutes at a time. Then I take a 2 mg. tab about 8:00 PM, then another 2 mg. tab around midnight when I go to bed. Sometimes I am taking 6 -8 mg. of RLS per day, especially if I am traveling or have meetings to attend. Is this amount safe for long-term use?