Snoop met the Back to Black singer in a nightclub in 2009 where they planned to head to the studio together to write new material.
The 39-year-old told Radio 1 host Scott Mills: 'When she was down and out I tried to lift her up.
'When she was going through that little phase I was trying to be a friend.'
But the pair didn't end up making it into the studio due to scheduling conflicts.
He said he'd offered for Amy, 27, to 'come to the studio with me and I'll get your spirit back right and get you back in the right mode and the right mentality.
'It didn't happen but she did get her life back right.'
The hip hop star added: 'It was just concern, knowing that if I helped get her in the studio I could get a private moment with her and let her know she's got some real friends.'