The drink mix, which has been popularized by Wayne and other rappers, includes soda and sometimes dissolved jolly rancher candies. And while Wayne's camp has denied that his Sizzurp consumption contributed to his seizures and lengthy stay in Cedars-Sinai Medical Center's ICU, medical experts say seizures are a cause of intense drug use.

"When you mix promethazine with codeine, you lower the seizure threshold," Mike Bloom, CEO of Pasadena Recovery, told Radio.com. "When it's mixed with Jolly Ranchers and soda, it tastes good and you can easily take too much of it. That's likely what he's doing, he's not aware of how much he's taking. But it can make seizure more likely."

On Monday (March 18), with plenty of speculation about Wayne's use of Sizzurp floating around, his mentor Birdman rejected the claims. He insisted the seizures were not a result of drug use.