KEY POINTS:
Sylvester Stallone says he used human growth hormone to get buff for the new Rambo movie and defends its use.
"HGH is nothing," the 61-year-old actor tells Time magazine in its February 4 issue. "Anyone who calls it a steroid is grossly misinformed."
Because it is nearly undetectable, HGH is an issue in sports battling allegations of rampant doping.
"Testosterone to me is so important for a sense of well-being when you get older," he says. "Everyone over 40 years old would be wise to investigate it because it increases the quality of your life. Mark my words. In 10 years it will be over-the-counter."
