Britney Spears’ family fears she is heading down the same tragic road as Amy Winehouse.

Spears’ ex-husband Kevin Federline and her estranged father, Jamie Spears, said in a new interview that they suspect the “Toxic” singer is on drugs and could die as a result.

“I fear she’s on meth — I’ve been praying someone would make it public and that she wakes up,” Federline, 45, told the Daily Mail Saturday. “It’s terrifying. She is the mother of my boys.”

“Britney may die like Amy,” Jamie, 70, told the outlet, referencing the “Back to Black” singer, who died of alcohol poisoning at age 27 in 2011 after years of substance abuse.

“Compare her wellness then and how she is doing now,” added the Spears patriarch, whom Britney, 41, accused of abuse during his time as her conservator.

The pop star has not publicly responded to the bombshell interview.

The dire concerns come more than a year after the much-publicized end of Britney’s conservatorship, which controlled nearly every aspect of her life for 13 years.

Her sons, Sean Preston, 17, and Jayden, 16, claim to have seen drugs delivered to their mother’s home and are still refusing to visit her, according to the report.

“Every time the telephone rings, I fear that there will be devastating news,” said Federline, who collects a whopping $40,000 in monthly child support from his ex-wife.

“I don’t want the boys to wake up one morning and find their mother has taken an overdose,” the DJ added.

Page Six broke the news last month that Britney gave her kids the green light to move to Hawaii with their dad after Federline threatened to take her to court.

The Grammy winner — who recently deactivated her Instagram account again — is now married to Sam Asghari, with whom she celebrated her first wedding anniversary this week.

(Page Six)