ORCHARD PARK, NY - The Buffalo Bills are now on a two-game winning streak, and will get their star defensive tackle back heading into this Sunday's game at Los Angeles.

Marcell Dareus is back with the team after serving a four-game suspension for violating the NFL's substance abuse policy.

To know that I killed four weeks of being with these guys, it ate me up. But they constantly messaged me, they constantly kept me in the loop," Marcell Dareus said.

"I want him out there and we need him out there. I think this is a week I'm happy he's back," Rex Ryan said.

As far as his suspension, Dareus told USA Today Sports he never entered a rehab facility, but instead received treatment for Attention-deficit/hyperactivity disorder (ADHD).

"I just wanted to be proactive this time. I saw some issues with myself that I really never sought out help before," Dareus said.

Other than that, Dareus didn't really say much about his decision not to go to rehab or his ADHD. "To be honest I just want to move past it," was Dareus' response.

When asked about it, Rex Ryan didn't have much to say.

"I think it's more prudent for him to answer questions regarding what he did or didn't do during the suspension," Ryan said. "What I'm focused on regarding Marcell is getting him ready to play this week, getting him up to speed and getting him ready to play this week."

Dareus also said he sought out the help of Hall of Famer, Bruce Smith.

"Bruce just really gave me a lot of positive reinforcement. It's pretty big to be able to talk to a Hall of Famer," Dareus explained.

I'm happy to be back and I'm a better person and I'm going to do the best I can. Talk is cheap. It's not about words, it's all about action now," Dareus said.