Priscilla Presley‘s son Navarone Garibaldi has opened up about his “unbearable” fentanyl addiction which he says nearly killed him, crediting his mother for helping him to get clean.Garibaldi revealed he was spending $3,000 (£2,350) a month on fentanyl, which is 40 times more potent than heroin. His addiction began when unknowingly took it mixed with other recreational drugs.“With heroin it would last about six to eight hours, but with fentanyl you have to do it every 45 minutes or else you start to get sick,” he told The Sun.Going on to speak of his recovery he said: “My mum helped me, I was indisposed, I was useless.