Dorries, who was suspended from the party for going on the show, was voted out by the public and was hugged by camp members
Learning of her eviction, she told hosts Ant and Dec she had had a "fascinating experience".
She said: "I actually came here self-important for a few days but I'm not now.
"I needed that missile and I think all MPs need that. I came from a council estate and never thought I was like that, but I was. I'm not now."
When asked by presenters Ant and Dec if she felt she had achieved her aim in raising awareness of issues, she said: "I don't know what people have seen but I have had some fascinating conversations in there. It's been a fascinating experience.
"I think it is important that MPs realise that you need to go where the public go. More people vote on X Factor and I'm A Celebrity than they do in the general elections. MPs need to go where people vote."
She predicted David Haye would win with Helen Flanagan and Eric Bristow in the final three, and said she had guessed she would be the first to leave.
She said: "I'm not disappointed at being the first, especially when you're starving. I kind of expected it actually. I don't think the public actually understand how hard and how difficult it is down there. The effect it has on your body when you're down there with three teaspoons of rice a day is hard, hard, hard."
She was suspended as a Tory MP after flying to the jungle without getting permission from David Cameron or informing senior party leaders. She angered colleagues and constituents by appearing on the show, but insisted she would use it as a platform to promote politics and engage the electorate.
Before going on I'm A Celebrity, she said: "It can't be that hard" and then went on to fail three challenges.
Asked if she regretted those words, she replied: "There's like this massive adrenaline rush and your brain's screaming 'No' and you have to overcome it but sometimes I can't."
On eating lamb's testicle and ostrich anus, she said: "I would never have thought I would eat any of those things in a million years."