"It escalated to 80 pills a day," Lisa Marie writes. "It took more and more to get high ... Related: Lisa Marie Presley Says ...

Singer Lisa ... challenges Presley encountered before her death. Following the birth of her youngest children, twin daughters Harper and Finley in 2008, Presley began taking the opioids she ...

Priscilla Presley ... time," Lisa Marie said. "I don't know how I lived through it." After welcoming her twin daughters Finley and Harper Lockwood in 2008, she became hooked on opioids.

Lisa Marie Presley channelled her thoughts and feelings ... She became addicted to opioids and painkillers following the birth of her twin daughters in 2008, according to CNN.

Lisa Marie Presley, the only child of Elvis Presley and ... his death – after years of abusing painkillers. Addiction also took hold of her son, Benjamin Keough, who battled alcoholism before ...

"I don't know if she did this mass exodus thing because she started taking drugs, or if it was other way around," Riley Keough tells PEOPLE Bryan Steffy/WireImage Lisa Marie Presley in 2015.

A month later, Lisa Marie was dead at age 54, and Keough took ... Presley provided Lisa Marie with fame, fortune and influence, it also came with major disadvantages. She became addicted to ...