Tito Ortiz has been vilified on twitter by his ex-girlfriend, Jenna Jameson, with claims that the retired UFC star took performance enhancing drugs before fights.

Porn star Jameson tweeted two pictures of medication that she claimed Ortiz took before fights, despite being in the same house as his twin sons.

Jameson put on the social network site: "My ex took my poor children away from me for NO reason.

"He did drugs and faked drug tests for UFC. I (spent) all my time with my babies, he partied. … And I have proof!"

The pair have four-year-old twins and Jameson claimed that Ortiz took them 'away from me for NO reason' but Ortiz was recently awarded primary custody of the twin boys after Jameson was arrested for allegedly assaulting a former assistant.

Charges were never filed against Jameson but she did have a restraining order put against her.

The pair were together for five years, during which time Ortiz never won a single UFC fight and he was also arrested for felony domestic violence at the couple's home.

Jameson added: "If you don't like what I'm saying, sue me for my home you're living in, sue me for furniture YOU have, sue me for my Phantom! Keep up your lies."

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