Precautions
Caution is to be exercised in prescribing PHENTERMINE® (phentermine hydrochloride) for patients with even mild hypertension.
Insulin requirements in diabetes mellitus may be altered in association with the use of PHENTERMINE® and the concomitant dietary regimen.
PHENTERMINE® may decrease the hypotensive effect of guanethidine.
The least amount feasible should be prescribed or dispensed at one time in order to minimize the possibility of overdosage.