Eli Lilly (NYSE: LLY) is one of the globe's biggest drug companies. It's a major player in providing diabetes treatments and is often included in dividend investor's portfolios. Big drug companies such as Eli Lilly, Novo Nordisk (NYSE: NVO), and AstraZeneca (NYSE: AZN) offer investors predictable dividend-friendly revenue regardless of the economy's whims and whispers. But investors are correct to wonder if Lilly's dividend can be sustained in light of billions in at-risk revenue tied to patent expiration on two of the company's top selling drugs. In the following slideshow you'll see whether I think Lilly's dividend is safe and gain insight into how Lilly's dividend payout matches up with industry peers Novo Nordisk and AstraZeneca.