Question: Which of the following instructions should a nurse give to a client who is beginning over-the-counter calcium supplements at a dose of 1000 mg/day, as recommended by the healthcare provider? Need Assignment Help? A. Divide the daily dose and take it with food. B. Return in 1 week to have a serum calcium level drawn. C. Vitamin D supplements should be stopped when taking calcium supplements. D. Take calcium at night before bedtime.