Diethylpropion hydrochloride extended release tablets, 75 mg are indicated in the management of exogenous obesity as a short-term adjunct in a regimen of weight reduction based on caloric restriction in patients with an initial body mass index of 30 kg/m 2 or higher and who have not responded to appropriate weight reducing regimen alone. Below is a chart of BMI based on various heights and weights. BMI is calculated by taking the patient’s weight, in kilograms , divided by the patient’s height, in meters , squared. Metric conversions are as follows: pounds divided by.