United Kingdom, Nov. 19 -- Jack Osbourne has told how he checked into rehab aged 17 after taking "a lot of pills, a lot of alcohol, and a lot of weed" during his younger years - and he hasn't once relapsed since.

The 40-year-old TV star has opened up about being catapulted into fame as a teenager when he and his family - dad Ozzy Osbourne, mum Sharon Osbourne and sister Kelly Osbourne - starred in reality TV show The Osbournes, and he admitted it was tough having a "ton of money and no rules" in Los Angeles during those times.

Speaking on TV show I'm A Celebrity... Get Me Out Of Here!, he said: "When you give a 16 year old a s*** ton of money and no rules, in LA, you're kind of just like, 'OK, let's go play.'

"I got sober when I was 17...