Mary A. Fischer, in her October, 1994 GQ Magazine article writes that when Jordan was sedated in his father’s office on July 16th, 1993, allegedly, he was administered the controversial drug Sodium Amytal, which studies have shown can make the human mind suggestible. Fischer wrote that through the use of Sodium Amytal false memories might have been implanted in Jordan’s mind.
However, according to Anthony Pellicano about two weeks later, on August 4, 1993 (the day the Chandlers made their demand for $20 million of Michael Jackson [details in this article]) while Evan read passages from Dr. Mathis Abrams’ letter to Jackson and his people, when he arrived at the parts about child molestation “the boy, says Pellicano, put his head down and then looked up at Jackson with a surprised expression, as if to say “I didn’t say that.” 
Jordan’s uncle Ray Chandler himself uses this defense against the Sodium Amytal story in an article he has written for his now defunct website (atgbook.net) in 2005:
“Ironically, the person who best refutes Fischer’s drug fairytale is none other than Anthony Pellicano. In December of 1993 Pellicano described Jordie’s behavior at the August 4 Westwood Marquis meeting as follows:
The father began to read the psychiatrists letter, which cited the criminal statutes that applied to child abuse. “Jordie was looking down,” [Pellicano said] “and he pops his head up and looks at Michael like, ‘I didn’t say that.'”
According to Pellicano, just two weeks after the alleged brainwashing Jordie wasn’t brainwashed at all! He was acting embarrassed and guilty about the accusations his father had made.” 
“Ironically”, with this defense against the Sodium Amytal story Chandler acknowledges the credibility of Pellicano’s account. If Chandler brings up Pellicano’s account as a defense against the Sodium Amytal claim then logically that means he acknowledges it as accurate. Pellicano’s account supports the theory that Jordan’s memory was not altered.
Jackson’s 2005 attorney, Thomas Mesereau said he had witnesses who, if Jordan testified against Jackson at the 2005 trial, would tell the jury that Jordan privately confided in them that Jackson never molested him. If this is true then this too supports that Jordan’s memory was not altered.
Ray Chandler in his book and article admits that Jordan was sedated on July 16 for a minor dental procedure (pulling a baby tooth), but he denies that Sodium Amytal was used. In his 2005 article Ray Chandler speculatively tries to attribute the origination of the Sodium Amytal story to Jackson’s camp, but Fischer cites her sources for the story, none of whom belong to the Jackson camp.
One of her sources was a report by “a newsman at KCBS-TV”. We know from Ray Chandler’s 2005 article that the newsman was Harvey Levin (since then known as the founder of celebrity gossip website TMZ). Fischer wrote in 1994:
“A newsman at KCBS-TV, in L.A., reported on May 3 of this year  that Chandler had used the drug on his son, but the dentist claimed he did so only to pull his son’s tooth and that while under the drug’s influence, the boy came out with allegations.” 
From the wording (“the dentist claimed” and the emphasis on that it was used “only to pull his son’s tooth”) it seems that the source of Levin’s information was Evan Chandler himself or someone on his side, but Ray Chandler in his article denies this. Mary Fischer herself asked Mark Torbiner, Evan’s Anesthesiologist, the person who supposedly sedated Jordan, and he answered somewhat ambiguously: “If I used it, it was for dental purposes” . Ray Chandler in 2005 cannot get a flat-out denial from Torbiner either. In the footnotes to his article he writes:
“Fischer claimed that she spoke to Torbiner and that he told her “If I used it [the drug], it was for dental purposes.” Dr. Torbiner would not respond to inquiries about what, if anything, he told Fischer. His attorney stated that Torbiner was bound by the doctor-patient privilege and could not discuss the issue without written consent from his patient.” 
We don’t know Levin’s sources for his claim, but we do know that Fischer’s source, Mark Torbiner was a member of the Chandler camp, not the Jackson camp. Though he did not directly claim he used Sodium Amytal on Jordan, but he made an ambiguous statement about it.
In the spring of 1994, when this story first appeared through Harvey Levin, there was a high profile child abuse trial featured in the American media with the protaginist Sodium Amytal. In that case a 23-year-old woman, Holly Ramona accused her father of raping her when she was a child. However, her father counter-sued Holly’s therapist for implanting false memories in her mind with hypnosis and with the use of Sodium Amytal. In that trial, evidence revealed that the drug was unreliable. 
At the time the prosecution in the Jackson case were still pursuing the Chandlers to testify against the entertainer in a criminal case. Los Angeles district attorney, Gil Garcetti said right after the Chandler settlement in January 1994:
“The criminal investigation of singer Michael Jackson is ongoing and will not be affected by the announcement of the civil case settlement,” Garcetti said. “The district attorney’s office is taking Mr. [Larry] Feldman [the Chandlers’ attorney] at his word that the alleged victim will be allowed to testify and that there has been no agreement in the civil matter that will affect cooperation in the criminal investigation.” 
A claim that Sodium Amytal was used on Jordan would be a good way for the Chandlers to impeach him and allege that his memories are unreliable and thus get the prosecution off their back. Remember, the Chandlers already had their money from the settlement and never wanted to testify in a criminal court [for details see our article about The Settlement].
However, whether Sodium Amytal was used or not is not pivotal in this case at all. As you can read in this article, the Chandlers’ version of how Jordan came up with the allegations is very problematic in itself, even without the introduction of Sodium Amytal into the story.
 Mary A. Fischer: Was Michael Jackson Framed? (GQ, October 1994)
 Raymond Chandler’s article on his now defunct website (Allthatglittersbook.com, Atgbook.com, Atgbook.net, January-February, 2005)
 Dennis Dutton: A Family Torn Asunder (July 20, 1997)
 Jackson Settles Abuse Suit but Insists He Is Innocent : Courts: Singer will reportedly pay $15 million to $24 million to teen-ager. Criminal investigation will proceed. (Los Angeles Times, January 26, 1994)