Teenage Abuse of Cough Medicines and Promethazine

According to Sharon Levy, MD, Harvard Medical School's pediatric addiction expert, nonmedical medication misuse may be much more common than previously reported. One of the older fads is in the news again: getting high from cough and cold medicines containing dextromethorphan (DXM). This drug is sometimes combined with prescribed promethazine with codeine. At very high doses, DXM mimics the effects of illegal drugs like phencyclidine (PCP) and ketamine.

More than 125 over-the-counter (OTC) medicines for cough and colds contain DXM. It’s in Coricidin, Dimetapp DM, Nyquil, Robitussin Cough and Cold, and store brands for cough-and-cold medicines. These products are available in pharmacies, grocery stores, and other retail outlets. A safe dose of products with DXM is about 15-30 milligrams (mg) over 24 hours. It usually takes 10 times that amount to make a teenager high.

Teen DXM Slang

A syrup head is someone using cough syrups with DXM to get high. Dexing is getting high on products with DXM. Orange Crush alludes to some cough medicines with DXM. (The name may stem from the orange-colored syrup—and packaging—Delsym.)

Poor man's PCP and poor man's X are also common terms, because these drugs are inexpensive, but can cause effects similar to PCP or ecstasy at high doses. Red devils refer to Coricidin tablets or other cough medicines. Robo usually refers to cough syrup with DXM. It derives from the brand name Robitussin but is common slang for any cough syrup. Robo-tripping alludes to abusing products with DXM and, specifically, to the hallucinogenic trips people can attain at high doses.

Parents who hear teens using these terms should ask questions when the child and parent are alone.

Prevalence and Trends

The Monitoring the Future (MTF) survey, conducted by the National Institute on Drug Abuse (NIDA) and the University of Michigan, provides insights into adolescent substance use. The survey began monitoring OTC cough-and-cold medication abuse every year in 2006. That year, the MTF reported that 4.2% of 8th-graders, 5.3% of 10th-graders, and 6.9% of 12th-graders misused OTC cough-and-cold medications in the previous year. In 2015, 2.6% of 8th-graders, 3.3% of 10th-graders, and 4.0% of 12th-graders reported past-year misuse. The most recent data, in 2024, indicate that the percentage dropped somewhat. However, a recent alert from the National Drug Early Warning System at the University of Florida (NDEWS) suggests a resurgence of interest in DXM and its combination with antihistamines.

DXM+ Combination Dangers

When taken alone, DXM’s dissociative and hallucinogenic effects may include euphoria, altered perception of time, paranoia, disorientation, and hallucinations. Physical symptoms of intoxication are hyperexcitability, problems walking, involuntary eye movements, and irritability. High doses can lead to impaired motor function, numbness, nausea and vomiting, increased heart rate, and elevated blood pressure. Chronic misuse results in dependence and severe psychological or physical health issues.

Combining DXM with other substances, especially alcohol, sleeping pills, antihistamines, or tranquilizers, is highly risky, as is combining DXM with antidepressants affecting serotonin, due to the risk of a possibly life-threatening serotonin syndrome.

Combining DXM With Promethazine

Combining the abuse of the prescribed antihistamine promethazine (Phenergan) with DXM may be increasing. The recent alert from the National Drug Early Warning System suggested that this new combination is an emerging threat.

The NDEWS recently checked for recent reports of saccharine (artificial sugar) being detected in abused drugs. Putting on their detective hats, the NDEWS team discovered that increased saccharine in drugs was caused by users adding cough syrup to promethazine. The signal for this combination was detected in more than double the number noted in early 2024.

Combining DXM and promethazine can amplify central nervous system depression, leading to increased drowsiness, dizziness, and impaired motor function. High doses may cause aggression, severe respiratory depression, hallucinations, delirium, paranoia, and cognitive impairments. Reddit social media reports noted an increased risks of falls and injuries due to severely impaired coordination and balance from the DXM-and-promethazine combination.

Promethazine with codeine is still available by prescription in the U.S., but access is restricted due to its classification as a Schedule V controlled substance at the federal level. Pharmacies and healthcare providers have become more cautious in prescribing promethazine with codeine due to its association with recreational use. Some manufacturers have discontinued production of promethazine with codeine, but generic versions remain on the market under tight regulation.

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Purple drank is drug slang for the mixture containing codeine and promethazine mixed with a soft drink such as Sprite or Fanta—and sometimes with candy such as Jolly Ranchers. The drink gets its name from the purple color of some cough syrups. Purple drank has been popularized in certain music and hip-hop cultures, with some artists glorifying its use in their lyrics. However, many rappers who once promoted the drug later warned against its dangers after experiencing serious health consequences themselves or witnessing peers suffer from addiction and overdoses.

Professor Linda Cottler, Ph.D., M.P.H.

Source: Courtesy Linda Cottler

"Healthcare professionals should be aware of the potential for abuse and monitor for signs in patients, especially adolescents and young adults," the director of NDEWS Linda B. Cottler, Ph.D., MPH, FACE, told me. "Parents should be aware of these combinations and talk to their children about avoiding “cough” medicines acquired from friends, friend’s siblings, or friends’ parents."

Summary

While the combination of DXM and promethazine is not commonly reported in drug abuse or emergency-room cases, misuse could lead to significant health risks. Stores have started to keep these cough and cold remedies behind the counter to reduce access and potential for teen abuse. Some makers of OTC medicines with DXM have put warning labels on their packaging about the potential for abuse. Many states have banned sales of meds with DXM to minors. These actions have helped reduce teen DXM abuse. However, recent teen interest in abuse of combined DXM and promethazine is concerning.