US rapper Pimp C, who died in December age 33, was killed by an accidental overdose, coroners have ruled.
Pimp C's body was discovered on 4 December
The musician, who was a member of chart topping duo UGK, died after taking a combination of prescription medications made into a syrup.
Pimp C - real name Carl Butler - also suffered from a sleep disorder causing him to temporarily stop breathing.
The hip hop artist, who was jailed for three years in 2000 on gun charges, was found dead in a Los Angeles hotel room.
His death was caused by a combination of sleep apnea and having taken large amounts of the syrup, said Ed Winter of the LA County Coroner's office.
Another Texas rapper, DJ Screw, was found dead in 2000 after reportedly overdosing on the medication-laced preparation.
It was the subject of UKG and the Underground Kingz 2000 single called Sippin' On Some Syrup.
The syrup, which contains codeine and promethazine, is known to be used among rap circles from the southern states of the US.
In 2007 UGK made a comeback with the critically acclaimed album, Underground Kingz, which included the hit Int'l Player's Anthem (I Choose You), which featured Grammy award-winning hip-hop duo OutKast.
Pimp C also worked with Jay-Z and British star Dizzee Rascal.