A 38 year
old female presents with a history of feeling weak , pain in her muscles and
bones .No significant past medical history . she is a vegetarian . she is
married and has 4 children . on examination you note that she has a waddling
gait and she finds it difficult to get up from the seated position . You ask
her to squat and rise up and she finds this difficult without using her arms
for support .
calcium 1.8 mmol/L
phosphatase 330 U/L
patient which one of the following would you prescribe ?