<prompt> Translate the following text to EnglishKama matokeo ya utafiti wa 1995, mchanganyiko wa dawa mbili, fenfluramine na phentermine, ulionyesha kuwa inazuia hamu ya kula na kusaidia watu wenye uzito mzito kupoteza wastani wa pauni 24 baada ya miaka miwili.  <response>: In 1995, a combination of two drugs, fenfluramine and phentermine--fen-phen--was shown to suppress appetite enough to help the severely obese lose an average of 24 pounds after two years. 