- Recently (within previous 3 months) prescribed or initiated therapy with medication(s) known to cause significant weight gain or likely to require treatment with such medication(s) during the study OR is currently taking or has taken within the previous 3 months prescription or over-the-counter weight loss medications (e.g., medications and/or supplements containing ephedrine, phenylpropanolamine, amphetamines, etc.). Additionally, use of such medications and weight loss/appetite suppressing dietary supplements are prohibited during the course of the trial including the screening period