In his documentary, Bieber takes fans into his doctor's clinic, where he gets weekly NAD+ infusions.
In his new YouTube documentary series "Seasons," Justin Bieber opened up about how his childhood anxiety spurred his "dark period" in his late teens and early 20s when he was addicted to weed, lean (a liquid opioid), and pills.
Since getting sober, he has been diagnosed with anxiety, chronic mono, and Lyme disease, all of which can cause lethargy, anxiety, and heart palpitations.
"I think when you take somebody very young and they start to get horrible, crazy, crippling anxiety and it goes undiagnosed and you don't know what it is that you're feeling, you start to self-medicate because it makes you feel better," Hailey Bieber (née Baldwin), Bieber's wife, said.
His solution, Bieber explains in the 15-minute episode, is a mix of accepted and alternative treatments.
Though he said he relies on anti-depressants to "help me get outta bed in the morning," he also swears by sleeping in a hyperbaric chamber and getting NAD+ infusions administered through an IV — a common, though unproven, treatment for people battling substance abuse.