"Doing the vegan diet wasn't only about losing weight, but getting rid of that character, you know, getting rid of that energy that I was having to live with for two years."
And he's ruled out taking on such a physically demanding role ever again.
"No, I wouldn't change my body again, Moura said.
"I meant that's - I think that's something for young people to do, you know. I can't do that anymore. My cholesterol was - it was horrible."
Moura didn't only change his body when he landed the role, but he also had to learn how to speak Spanish.
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"So I flew to Medellin, booked myself into a university course to learn Spanish and lived there for five months," the actor said to news.com.au last year.
"And of course, I had to gain a lot of weight. If you go to the internet and see a picture of Escobar, you will see that he's fat. It would have been weird to have a skinny guy play the role so I had to do it.
"The first few weeks were delicious. I was eating ice-cream with my kids but then I had my cholesterol tests which were very high. So now in the next season (two) we're using prosthetics and fake bellies."
Narcos season two is currently streaming on Netflix