Kanye West is back to huffing laughing gas again, multiple concerned sources tell The Post.

“When he [West] got back to LA, he got dental work again and I think that’s when he relapsed,” a friend said, referencing his return to the city after six months away at the end of January.

The 47-year-old rapper and clothing designer’s recent erratic behavior has been worsened by using nitrous oxide — commonly known as laughing gas, an anesthetic.

A second source told The Post West’s nitrous use has been a major pain point in his relationship with wife Bianca Censori.

“The nitrous took over in Los Angeles. After the Grammy party [on Feb. 2], he met people and it kind of escalated to things that he never does anymore when he’s in Japan,” the source claimed, referencing Kanye’s most recent destination before heading back to the US.

A third source told The Post how West uses nitrous oxide as “medication.”

“There is an issue with nitrous and his dentist, and the medication leads to this meltdown. When he comes off the nitrous, he’s crazy, he just wants to be able to do anything he wants,” the third source told The Post.

“It’s as if thoughts are coming to him and he speaks his mind. It’s like a cultural Tourette’s experience, his entire life is a video game.”

A source who previously worked at Yeezy claimed he is “very easily influenced,” but still made the decision to previously fire an employee “over not wanting to put the swastika on a T-shirt,” referring to West selling a Nazi symbol emblazoned on a T-shirt online last week.

Shopify took down the rapper’s website over the shirt last Tuesday.

The stunt capped a four-day blitz of tweets in which he claimed “Hitler was sooooo fresh,” “I’m a Nazi,” said antisemitism is “just some bulls–t Jewish people made up,” and “Any Jewish person that does business with me needs to know I don’t like or trust any Jewish.”

“His memory is so messed up this point,” the former employee told The Post, explaining that Kanye would forget conversations and even people he worked closely with within a few days’ span.

“You can kind of just convince [West] of things and he doesn’t really fact-check them. You can just say something that is not true, but if you say it with enough conviction at the right time, he’ll believe it.”

However, the ex-employee was also clear that it doesn’t excuse his behavior and “no one forced him to tweet.”

West, who has officially changed his name to Ye, also recently re-enlisted far-right radical Milo Yiannopoulos, 40, as his manager after firing him last year.

Last August, Yiannopoulos accused dentist Thomas Connelly of getting the rapper addicted to nitrous oxide — which is not an illegal substance, although in California- it is an offense to buy it “with the intent to inhale” — in a sworn affidavit filed with the California Dental Board.

“Connelly got Ye hooked on nitrous — laughing gas. It is my belief that Connelly sought to diminish Ye’s mental faculties so that Connelly and his business associates could extract millions of dollars from him,” Yiannopoulos claimed in a series of posts on X last August, which included the affidavit.

The Post has reached out to Connelly for comment. It is unknown if he was behind the rapper’s most recent dental work.

A source close to West’s camp declined to comment on his nitrous oxide use.

Meanwhile, reports swirled last Thursday that Censori and West are going their separate ways after two years of marriage, but sources feel that is unlikely. 

“Ye is a pretty stubborn person. I do believe that he loves her [Censori]. We were doing music dedicated to her as of the last six months. He’s becoming more of a family man, it seems. He’s his own person,” a source close to Ye told The Post.

“She sees him as a resource for whatever her endeavors are to be famous globally and he can facilitate. I don’t think she’s in any way victimized.”

The notoriously controversial couple sent shock waves when they appeared on the Grammy Awards red carpet. Censori arrived in a black fur coat, then swiftly removed it to show a completely see-through dress made from sheer stockings.

“Bianca likes to display her body very much. She has a lot of power,” the first source told The Post.