The powerful narcotic popped up on the cultural grid around the turn of the millennium. A Texas producer-remixer named DJ Screw paid homage to its woozy, heavy-lidded high by dramatically slowing down beats and vocals to replicate the drug's sleepwalker euphoria.
Among Southern rappers, the chemical mixture — called "sizzurp" on the street — soon became as ubiquitous as gold jewelry.
This wasn't some exotic new hallucinogen. In fact, it was usually mixed with fruit soda and sipped from oversized plastic foam cups. A cough syrup, fortified with codeine and promethazine and bought with a prescription, it was highly addictive — and technically legal.
PHOTOS: A history of 'sizzurp' in song
Over the last dozen or so years, sizzurp has become a quietly pervasive cultural force that has infiltrated the Top 40 by way of the hip-hop genre Chopped and Screwed, pioneered by DJ Screw. The sound has turned up on tracks by elite hit makers including Beyonce, Kanye West and, most notably, dreadlocked rap superstar Lil Wayne, who found an unlikely muse in the drug's chemical composition.
When news that Wayne was hospitalized after suffering a seizure on a music video set March 12, many thought sizzurp might be to blame. Spokespeople for the rapper denied it, and he was released from Cedars-Sinai Medical Center six days after he was admitted. Stress, not substance abuse, caused his hospitalization, said Bryan "Birdman" Williams, co-chief executive of the chart-topping rapper's label Cash Money Records.
But sizzurp has long existed in the shadows of the music industry, and is even suspected in several deaths.
Followers of Lil Wayne (Dwayne Michael Carter Jr.) know well his affection for "sippin' on syrup," as the phenomenon is known.
As far back as 2005, Lil Wayne rapped affectionately about his favored cocktail — sizzurp with fruit soda to mask its unpleasant medicine taste — on the song "Lock & Load": "I'm probably drinkin' that syrup/Thinking I won't slip/Even though I'm leaning like a broken hip."
Sizzurp has also provided a street-cred-bolstering talking point in lyrics for star rappers Rick Ross and Far East Movement. And syrup provoked a minor media frenzy in February, when pop star Justin Bieber was photographed at a party in close proximity to what looked like a bottle of codeine-fortified meds (Bieber has denied taking drugs).
Chopped and Screwed music is front and center on R&B diva Beyonce's newly released single "Bow Down / I Been On." The genre's signature sound — slowing the singer's vocal pitch to a molasses-y growl — is used to showcase Beyonce's artistic risk-taking. As well, hip-hop luminaries Kanye West, A$AP Rocky, T.I. and Drake have made repeated use of the genre's slo-mo phrasing techniques.
That Lil Wayne, one of hip-hop's cash kings, would find escape in something as down-market as prescription cold medication may seem at odds with the genre's blinged-out excesses.
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"Codeine is an opiate," said Jane Maxwell, senior research scientist at the University of Texas at Austin's Addiction Research Institute. "When you're sipping on syrup, you're sipping on a synthetic narcotic analgesic."
Lil Wayne is seen guzzling what appears to be sizzurp — also known as "lean," "purp" or "purple drank" thanks to the cough syrup's synthetic pastel hue — in the 2009 documentary film "The Carter." (He sued to block the movie's release, accusing its filmmakers of fraud by intentional misrepresentation, but the suit was thrown out by a judge.)
After serving 242 days on Rikers Island in 2010 for gun possession, Lil Wayne continued to pledge allegiance to sizzurp — never mind probation terms stipulating more prison time should he test positive for drugs prior to November 2013: "I'm purple drank forever," Wayne raps in last year's "Turn On the Lights."
Call it the multiple Grammy-winning rapper's cultural prerogative, a byproduct of his New Orleans upbringing. Within the gritty environment that spawned Lil Wayne and Southern hip-hop, purple drank provides a cheap, legal, often medical-insurance-subsidized alternative to dangerous street drugs like crack and heroin, especially for those below the poverty line, according to "Leaning on Syrup," a report on opioid cough syrup abuse from the Texas Commission on Drug and Alcohol Abuse.
Recreational users generally mix two ounces of codeine-promethazine cough syrup with a 12-ounce can of soda to achieve a high. Habitual abusers with a high opioid tolerance have been known to take up to 25 times the recommended dosage over the course of a day.
In a videotaped public service announcement Lil Wayne posted to the Web in 2011, the multi-platinum-selling Louisiana rapper addresses his complex relationship with cough syrup: