Whitney Houston’s estate has refuted what they call “inaccurate and unfair” claims by Oprah Winfrey that the singer was drug affected when she fell off the stage during an appearance on her talkshow.

Speaking on Tuesday at the Cannes Lions conference in France, Winfrey claimed Houston was “back on drugs” during her two-part appearance on the Oprah Winfrey Show in 2009, during which she spoke about being clean after years of substance abuse and two spells in rehab.

“She fell off of the stage,” Winfrey said on Tuesday, saying she later begged the audience not share any photos of the incident to spare the singer.

“I knew that if that story got out … she would be destroyed by that,” she said. “And so even though the audience was there and the audience had cameras, I begged them not to put those pictures out because it would ruin her life, and they did not. That would not happen today, I can tell you.”

In a statement on Wednesday night, the Houston estate confirmed the singer “absolutely fell from the stage”, but denied she was under the influence of drugs.

“It was during a sound check and it was due to the darkness of the area and her unfamiliarity with the stage,” the statement read. “She was absolutely not high.”

Houston “faced personal battles,” they added, “but it is inaccurate and unfair to attach that struggle to every performance or every chapter of her life.

“What the studio audience witnessed on stage was the result of discipline, talent, and commitment not the assumptions others project,” the statement continued.

“Whitney’s humanity included triumphs and struggles, but on that day, she showed up as the professional and gifted artist she always worked to be. We owe her the dignity of telling the truth not repeating myths.”

Houston was one of the world’s bestselling artists at her peak in the 80s and 90s, selling more than 170m albums. Among her hundreds of awards included two Emmys and six Grammys, with her hits including I Wanna Dance With Somebody (Who Loves Me), Saving All My Love For You and perhaps her most famous song, I Will Always Love You, from her movie The Bodyguard.

Houston opened up about her drug use in the 2000s and revealed that using cocaine, marijuana and prescription medication had left her unable to hit the high notes she previously could reach.

Houston died aged 48 in 2012 after accidentally drowning in the bath at the Beverly Hilton hotel. The final autopsy report revealed the drowning was caused by the “effects of atherosclerotic heart disease and cocaine use”, and that she had marijuana and several prescription medications in her system at the time of her death.

Winfrey has not commented on the estate’s statement.