My dose, due to weight loss, was reduced from 10 mg./day to 5mg./day. Both the doctor and the pharmacy say that I can cut the 10 mg. tabs in half and take 1/2 tab per day. I am concerned about how to make sure than I can equally split them to equal 5 mg/day; how important is the dosage? I am below the recommended weight of 132 lbs for the 10 mg/day dose.