Tyrese claims his online meltdown a couple weeks ago was caused by the drug Rexulti used to treat depression having an adverse effect on him ... but he's off it now and getting back to normal.
The actor says the meds made him do things over the past two months that effected a lot of people and he wants them to know he's sorry.
As TMZ has reported ... Tyrese is in a bitter court battle with his ex, Norma Gibson, and he says doctors recommended the meds to him to handle the stress.
Check out the singer/actor's big reveal below.
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