By David Heber, M.D., Ph.D., F.A.C.P., F.A.C.N. Chairman of Scientific Advisory Board and Nutrition Advisory Board, Herbalife   Q: Is the amount of caffeine in Liftoff effervescent energy drink safe? A: Liftoff contains approximately 75 milligrams of caffeine, which is what is found in a cup of brewed coffee. In people who are sensitive to More >