Universal Pictures

Tyrese Gibson on "Fast and Furious 6."

"Fast and Furious" actor Tyrese Gibson apologizes for his recent online outrage, saying it was all the result of psychiatric medication.

The 38-year-old singer-actor posted a lengthy public apology on his Instagram account, the same platform he used to bash his ex-wife Norma Mitchell Gibson and co-star Dwayne "The Rock" Johnson.

In the post, Gibson clarified that, contrary to reports, he neither has a mental illness nor is he doing drugs. "It was meds that was suggested to deal with the trauma of losing my daughter this way.... everything just changed," he said.

Gibson is currently fighting a courtroom feud with his former wife over the custody of their 10-year-old daughter Shayla.

He said in the post that the strain caused by this "traumatic experience" pushed him to see a psychiatrist, who then told him to take a drug called Rexulti. The actor defends that while this drug might be helpful to others, it had the "adverse effect" on him.

Gibson assured his fans, however, that he is "in the clear" now and that he is in the process of flushing the drugs out of his system.

The post was followed by another apology, which he gave through an Instagram video. Here, he apologized to his wife, family, friends, and fans, who were highly-affected by his actions. "If you know me the way I know you do, you know that something had to be wrong and I was not in my normal mind state," he said in the video.

In early November, Gibson has posted several controversial videos. In one, he was seen crying as he appealed to see his daughter Shayla. In another, he threatened to quit the "Fast and Furious" franchise if Johnson remains involved in the upcoming films. He has earlier accused his co-star of taking all the spotlight after a "Fast and Furious" spin-off was made exclusively for the characters of Johnson (Hobbs) and Jason Statham (Deckard).

Gibson did not directly include Johnson in his public apologies, although he did mention "business colleagues."