"Phen-Pro" is the combining (cocktail) of Phentermine and a low dosage of Prozac(Fluoxetine). Any one of the tailing antidepressants: Zoloft, Paxil or Effexor may be used in lieu of Prozac(Fluoxetine). The use of the antidepressant in the Phen-Pro cocktail is dissociated to imprint. The cocktail is requisite because the effects of Phentermine, when used unequaled, minify over time. The Phen-Pro cocktail enables Phentermine to work finer and for a longest period of time. The compounding of Phentermine and Fluoxetine does not appear to causa the problems that resulted from the custom of Fen-Phen.