If you’re interested in taking Delsym instead of dextromethorphan, talk with your doctor or pharmacist. To learn more about how generics compare with brand-name drugs, see this article. A generic drug is an exact copy of the active ingredient in a brand-name medication. Delsym is the brand-name medication that dextromethorphan suspension is based on. A generic is considered to be as safe and effective as the original drug. Long-term DXM addiction can lead to severe health issues, including cognitive impairment, liver and kidney damage, and mental health disorders like depression and anxiety.
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Before taking dextromethorphan, tell your healthcare provider about any prescription or over-the-counter (OTC) medicines, vitamins/minerals, herbal products, and other supplements you are using. When a person takes DXM at the dosage that a doctor or pharmacist has recommended, it rarely has side effects. When people take the correct dosage of a cough medication, DXM does not pose a risk. However, some people misuse it in the hope of achieving a “high.” In these cases, the side effects can be severe. A major metabolic catalyst involved is the cytochrome P450 enzyme known as 2D6, or CYP2D6.
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High doses carry the most psychological and physiological risk, so users should never exceed 15 mg/kg. Heavy, frequent use carries the possibility of neurotoxicity as well as the development of tolerance and psychological dependence. In users who are dependent, stopping DXM abruptly can result in withdrawal symptoms such as fatigue, apathy, flashbacks, constipation, insomnia, and anhedonia. Dextromethorphan (DXM) is a common component of combination cold medications that has become a popular drug of abuse for young adults. We report a case of DXM overdose after ingestion of this purified “Crystal Dex” and discuss the “Agent Lemon” and single-phase extraction techniques that are used to free-base the dextromethorphan.
- The FDA approves dextromethorphan to help relieve coughing due to a short-term cause.
- After taking this drug and cannabis, the concentration may diminish, thus making it hazardous to drive or operate heavy machinery.
- Even if DXM is taking a while to kick in, it’s never a good idea to take a second dose of DXM.
- Adolescents and young adults are particularly vulnerable to DXM addiction due to factors such as peer pressure, curiosity, and the accessibility of DXM-containing medications.
- Before taking dextromethorphan with other OTC cough, cold, or flu medications, be sure to check the ingredients of these products.
What Does It Feel Like?

When used at the dosage printed on the product label, dextromethorphan (DXM) is a fairly safe drug intended to reduce coughing. Although there is controversy about its effectiveness as a cough suppressant, the effects of DXM at high doses are well documented. At high doses, DXM can produce psychedelic symptoms including mania, panic, extreme agitation, and hallucinations.
According to the National Institute on Drug Abuse (2023), approximately 6.9% of adolescents have reported abusing DXM for its psychoactive effects. After abusing the drug for a long time (from a few months to a few years), people develop a DXM addiction. In some rare cases, the individual may establish physiological dependence as well. When this happens, the person will experience DXM withdrawal symptoms.
What Should Be Considered Before Taking Dextromethorphan?
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Nonprescription cough and cold combination products, including products that contain dextromethorphan, can cause serious side effects or death in young children. Do not give these products to children younger than 4 years of age. If you give these products to children 4-11 years of age, use caution and follow the package directions carefully. Tell your healthcare provider about all of your health conditions and any prescription or over-the-counter (OTC) medicines, vitamins/minerals, herbal products, and other supplements you are using. This will help them determine if dextromethorphan is right for you. Therefore, such an interaction is likely to increase blood pressure levels and heartbeat rates and induce an uncomfortable feeling, agitation, and restlessness.
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- Central nervous system (CNS) stimulants such as amphetamine and/or cocaine can cause a dangerous rise in blood pressure and heart rate.
- Importantly, none of the symptoms of a substance use disorder rely upon how frequently you use substances, the dose you take, or how long you’ve used those substances.
- Misuse of multisymptom cold medications, rather than use of a cough suppressant whose sole active ingredient is dextromethorphan, carries significant risk of fatality or serious illness.
- At high doses, DXM acts as a powerful dissociative with effects similar to ketamine and PCP.
- Anecdotally, some frequent DXM users describe a chronic form of tolerance that may take at least several months to reverse.
This may lead to a DXM HBr hangover, and this soon becomes a vicious cycle. Death is rare, but the most significant risk which may appear because of abusing Dextromethorphan. It is important for parents to care for their teens by never assuming that they are too innocent to abuse this drug. DXM addiction is real and may lead to severe effects such as liver damage and respiratory complications.
Cough Suppression

CNS depressants such as alcohol will have a combined depressant effect, which can cause a decreased respiratory rate. Because of this, dextromethorphan polistirex takes considerably longer to absorb, resulting in more gradual and longer lasting effects reminiscent of time-release pills. As a cough suppressant, the polistirex version lasts up to 12 hours. DXM produces several physical effects that vary from person to person and by dose. DXM products often contain other active ingredients that produce their own effects. It may sound harmless, given that DXM is legal and readily available.
DXM Overdoses

Anecdotally, some frequent DXM users describe a chronic form of tolerance that may take at least several months to reverse. Because they act on the same receptor systems, DXM is cross-tolerant with other dissociatives, such as PCP and ketamine. DXM is known to produce highly variable reactions from person to person. It’s always best to start with a low dose and gauge one’s individual reaction.

In particular, make sure that you discuss if you are taking any monoamine oxidase inhibitor (MAOI) within the past 2 weeks, which is a medicine usually used for depression or Parkinson’s disease. There are no known interactions between dextromethorphan and foods or drinks. Tell your healthcare provider if you have any of the following.

Dextromethorphan is available as an over-the-counter medication. The FDA approves dextromethorphan to help relieve coughing due to a short-term cause. Some people misuse dextromethorphan by taking it in amounts higher than the recommended dosage to try to get high or hallucinate. People sometimes also misuse dextromethorphan by combining it with alcohol or other substances. Some prescription medications contain dextromethorphan as an active ingredient. One example is Auvelity, which contains dextromethorphan and bupropion.
What’s The Dose Of DXM? (DXM Dosage Calculator)
If you or anyone you know is undergoing a severe health crisis, call a doctor or 911 immediately. Both of these substances are Central Nervous System depressants which means these two decrease the activity of the neurons in the brain. Another quite fascinating aspect relating to Dextromethorphan is information about its metabolism. Whereas the same dose in a poor metabolizer will have oral availability of 80% causing effects for up to 19 hours. In spite of government efforts to stop the abuse of Dextromethorphan cough syrup by teenagers, it is easily accessible through stores and online sources.