Last month, Lovato had overdosed on what was reported as an unspecified opioid. She was found unconscious in her residence in Hollywood Hills.
In a long statement on her official Instagram account, Vitale said she has nothing to do with the incident.
"I've never touched a drug or even seen it in my life, I do not do drugs and I would never encourage or deliver them to someone I love," she wrote.
"This untrue story is detrimental to the lives of innocent people, including mine … It's not okay to bully someone about false discoveries," she added.
Rumor had it that Lovato had taken the drugs when she attended Vitale's 28th birthday party on 23 July. She was found unconscious hours later.
Vitale said that the spread of a & nb; false story & # 39; her reputation.
"A harmful story that demonized me, blamed me, and since then took me so many wonderful moments in life." This untrue story is detrimental to the lives of innocent people, including mine. "We point to the finger so quickly with few facts at all," she wrote further.