An investigative documentary which will air Sunday on Al Jazeera alleges that Howard (knee) received human growth hormones from a Texas-based pharmacist, the Philadelphia Inquirer reports.
Howard has denied he has used HGH. The claim that Howard and other professional athletes received HGH is based on statements Charlie Sly, a pharmacist who once worked at an anti-aging clinic in Indiana, made and were recorded without his knowledge. Sly has since recanted his story.