Flair claimed Hogan’s doctor stopped prescribing him pain medication to combat his numerous wrestling injuries … so he resorted to unorthodox measures to deal with his suffering.

We asked Hogan’s widow, Sky, about Flair’s comments … and she said point-blank, “That didn’t happen at all.”

Sky – who also denied Flair spoke to Hulk the day before his death – went on to say the icon was under constant care of the Morton Plant Hospital in Florida … so Naitch had to have been either misinformed or misunderstood.

Sky said the only changes to Hogan’s medication came following his neck procedure to ensure whatever he was taking did not impact his lungs.

We spoke with two other family sources about Flair’s claim … and they both stated it was completely untrue as well.

The family isn’t pissed at Flair – they know he was one of Hogan’s close buddies and didn’t mean any harm with his words … but wanted to make it clear he got this one wrong.