Former NFL All-Pro running back Ricky Williams, who once sat out a season so he could smoke marijuana, is putting his experience to good use.

Williams has introduced a new personal marijuana brand, Real Wellness by Ricky Williams, that is now available in California dispensaries, and will soon be sold online.

It's a dream come true for the former NFL star, he told the South Florida Sun Sentinel.

“I am known as a professional football player,” Williams said. “In the last 14 years, I have been educating myself and training as a health care practitioner.”

The 1998 Heisman Trophy winner, Williams was selected No. 5 overall by the Saints in the 1999 NFL Draft. He rushed for 10,009 yards and 66 touchdowns in 11 NFL seasons, leading the NFL in rushing with 1,853 yards for the Dolphins in 2002.

But Williams missed the entire 2004 season after retiring, years later admitting, "It's kind of true … that I quit football to go smoke weed." After returning in 2005, he missed the 2006 season for violating the NFL's substance abuse policy.

But since retiring for good in 2011, the Williams has been a strong advocate for the legalization of marijuana across the U.S., especially for holistic and medical purposes. He was featured in a 2016 film, "Ricky Williams Takes the High Road."

More recently, Williams announced he had partnered in a company that produces hemp-based clothing. He also hosted a marijuana-friendly Super Bowl party in Hollywood.

Want to join me for my cannabis-friendly #SuperBowl party in the Hollywood Hills? Limited to only 50 spots, request your invite here: https://t.co/XLhJQjnSLW pic.twitter.com/U15EZ4BLn5 — Ricky Williams (@Rickthelaureate) January 4, 2018

Real Wellness by Ricky Williams includes six cannabis-related products, including salves, vape cartridges and tonics.

Given Williams' history, this product line seemed almost inevitable. As he told Sports Illustrated in 2016, “The way the industry is growing, it feels newer, and it feels fresh. It’s like I have the chance to make a difference and be a superstar. … Be a superstar again.”