Medications Commonly Misused as Drugs: Risks and Prevention
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Misused medications: benzodiazepines, opioids, stimulants… what risks and what screening?
Some medications prescribed in a medical context can be misused for their psychoactive effects: sedation, euphoria, disinhibition, stimulation, or seeking a “high.” This misuse exposes to major risks: dependence, respiratory disorders, loss of consciousness, accidents, interactions with alcohol, and overdose.
Important: this article aims to prevent and inform. It does not replace a doctor’s advice, a pharmacist or emergency service. Treatment should never be stopped abruptly without medical advice. In case of discomfort, loss of consciousness, suspected overdose, or accidental ingestion: call immediately 15, the 18 or the 112.
Understanding medication misuse
What is medication misuse?
Misuse refers to when a medication is used outside its medical indication, without a prescription, at an inappropriate dose, in a context of polyconsumption, or to achieve a psychoactive effect. The risk is particularly high with medications acting on the central nervous system.
Why is the risk underestimated?
Because a medication can give a false sense of security. Yet, a prescription substance can become dangerous when combined with alcohol, narcotics, or other sedative medications or when taken without medical supervision.
Dependence
Some molecules cause physical and psychological dependence, with difficult withdrawal, anxiety, insomnia, pain, agitation, or neurological symptoms.
Accidents
Drowsiness, reduced reflexes, disorientation, and memory problems increase risks while driving, at work or during a responsibility-related activity.
Overdose
Opioids, benzodiazepines, hypnotics, and gabapentinoids can cause respiratory depression, especially when mixed with each other or with alcohol.
1. Benzodiazepines and related hypnotics
Benzodiazepines are prescribed notably for anxiety, insomnia, certain forms of epilepsy, or muscle spasms. They are also frequently mentioned in misuse due to their sedative, anxiolytic, and amnesic effects.
Examples of concerned medications
- Alprazolam: Xanax®
- Bromazepam: Lexomil®
- Diazepam: Valium®
- Clonazepam: Rivotril®
- Zopiclone: Imovane®
- Zolpidem: Stilnox®
Effects sought during misuse
- Intense relaxation, disinhibition, or sensation of letting go
- Sedation, forced sleep, or hypnotic effect
- Loss of anxiety, paradoxical euphoria in some users
- Partial or total amnesia, particularly problematic in festive contexts
Main risks
- Physical and psychological dependence
- Memory disorders, confusion, disorientation
- Falls, accidents, risky behaviors
- Effects strongly worsened by alcohol and other central nervous system depressants
- Possible respiratory depression in case of overdose or mixing with opioids, alcohol, or pregabalin
Possible screening
Screening tests can detect the BZO family for benzodiazepines depending on the model used. However, related hypnotics like zolpidem or zopiclone should not be considered automatically detected by all standard tests. The choice of panel is therefore essential.
2. Opiates, opioids, and substitution treatments
Opioids are used to manage moderate to severe pain or as part of substitution treatments. Their diversion is particularly dangerous because they can cause respiratory depression and overdose.
Examples of concerned medications
- Morphine: Skenan®, Moscontin®
- Codeine: codeine-containing medicines, prescription only
- Tramadol: Topalgic®, Contramal® and generics
- Oxycodone: strong opioid painkillers
- Fentanyl: Durogesic®, Actiq® and other controlled medical forms
- Buprenorphine: Subutex® and generics
- Methadone: opioid substitution treatment
Effects sought during misuse
- Euphoria, calming, sensation of warmth or well-being
- Reduction of physical or psychological pain
- Drowsiness, slowing down, “high” effect
- Seeking effects similar to those of illicit opiates
Main risks
- Overdose, coma, and respiratory arrest
- Rapid dependence and difficult withdrawal syndrome
- Major risk when combined with alcohol, benzodiazepines, pregabalin, or other sedatives
- Domestic, road, or occupational accidents related to drowsiness
- Extreme danger with powerful opioids or synthetic opioids
Possible screening
Urine and saliva tests can detect certain opioids depending on the chosen reference: MOP/OPI for opiates like morphine or codeine, MTD for methadone, BUP for buprenorphine. Warning: tramadol, fentanyl or oxycodone may require specific panels and should not be confused with a automatic detection by a simple standard opiate test.
Regulatory point: French authorities have tightened the control of tramadol, codeine and dihydrocodeine due to the risks of misuse, dependence, abuse, and overdose. These developments show that drug diversion is not a marginal issue, but a real public health challenge.
3. Stimulants and alertness medications
Some medications prescribed for ADHD, narcolepsy, or alertness are diverted to artificially improve concentration, reduce fatigue, or seek stimulation. The risk increases with repeated use, high doses or combination with other substances.
Examples of concerned medications
- Methylphenidate: Ritalin®, Concerta®, Medikinet®
- Modafinil: Modiodal®
- Dextroamphetamine / amphetamine salts: products not commonly marketed in France depending on specialties
- Pseudoephedrine: decongestant medications strictly regulated due to risks of side effects and diversion
Effects sought during misuse
- Increased energy and alertness
- Feeling of improved concentration
- Artificial reduction of fatigue
- Seeking academic, professional, or party performance
Main risks
- Tachycardia, hypertension, cardiovascular disorders
- Anxiety, agitation, irritability, insomnia
- Paranoia, hallucinations, or psychiatric disorders in vulnerable subjects
- Exhaustion, “crash,” mood drop after the stimulant effect
- Psychological dependence and normalization of use
Possible screening
The AMP, MET, or MDMA panels target amphetamines, methamphetamines or ecstasy depending on the tests. However, methylphenidate and modafinil should not be presented as automatically detected by amphetamine panels standards. A specific protocol or analysis may be necessary.
4. Pregabalin, gabapentin, and diverted antidepressants
Pregabalin and gabapentin are prescribed for certain neurological disorders or neuropathic pain. Pregabalin is subject to special monitoring in France due to an increase in misuse cases, of abuse, dependence, and forged prescriptions.
Examples of concerned medications
- Pregabalin: Lyrica® and generics
- Gabapentin: Neurontin® and generics
- Amitriptyline: Laroxyl®
- Other tricyclic antidepressants according to prescriptions
Effects sought during misuse
- Relaxation, calming, reduction of anxiety
- Drowsiness or sedation
- Euphoric effects reported during non-medical use
- Dangerous enhancement of the effects of other substances
Main risks
- Consciousness disorders, confusion, disorientation
- Coma or respiratory depression in case of overdose or combination with opioids and sedatives
- Dependence and withdrawal syndrome
- Increased risk in cases of polyconsumption
Possible screening
Tricyclic antidepressants can be detected with a TCA panel depending on the test used. However, pregabalin and gabapentin are not among the substances detected by all standard rapid tests. A device or analysis adapted to the substance being sought must be chosen.
5. Antihistamines, anticholinergics, and other misused substances
Some non-opioid and non-benzodiazepine medications can also be misused. The danger often comes sedation, confusion, neurological disorders, and association with alcohol or other psychoactive substances.
Examples of concerned substances
- Promethazine: Phenergan® and related products
- Doxylamine: antihistamine sleeping aids
- Hydroxyzine: anxiolytic antihistamine as prescribed
- Scopolamine / hyoscine: anticholinergic substance to be handled with caution in prevention content
- Barbiturates: rarer, but still sought in certain toxicological contexts
Effects sought during misuse
- Sedation, drowsiness, or hypnotic effect
- Altered perceptions
- Confusion, disorientation, or memory loss
- Enhancement of effects of other substances
Main risks
- Loss of consciousness, fall, illness
- Severe confusion and dangerous behaviors
- Respiratory risk in combination with alcohol, opioids, or benzodiazepines
- Possible cardiac or neurological disorders depending on the molecule and context
Possible screening
Some urine tests may include panels like BAR for barbiturates. For antihistamines, anticholinergics, zolpidem, zopiclone, or more specific substances, a targeted toxicological analysis may be necessary. Screening should always be chosen according to the substance sought.
Misused medications and chemical submission
Medication misuse is not limited to recreational use. Sedative medications, anxiolytics, hypnotics, antihistamines, antidepressants, or opioids may be involved in situations of chemical submission or chemical vulnerability. In these situations, a person can be made more vulnerable to assault, theft, or violence.
Key message: the victim is never responsible. Prevention should not place the burden the burden of safety on victims. Tests, bracelets, glass condoms, awareness campaigns and screening protocols are complementary tools in a comprehensive prevention and support strategy and combating criminal behavior.
Possible warning signs
- Blackout or unexplained memory loss
- Sudden drowsiness or feeling “disconnected”
- Loss of control, confusion, or disorientation
- Symptoms disproportionate to the declared consumption
Useful reflexes
- Get to safety and inform a trusted person
- Contact emergency services in case of illness or serious doubt
- Consult quickly to allow appropriate care
- Keep, if possible, useful items: glass, bottle, clothing, messages, testimonies
Collective prevention
- Train teams in festive and professional environments
- Set up listening points and alert procedures
- Equip events with prevention tools
- Provide clear referral to emergency and specialized services
Screening for diverted medications: saliva, urine, and limits to know
Screening can help identify certain substance families, but it must be used rigorously. A rapid test is a screening tool: depending on the context, a positive or doubtful result may require a laboratory confirmation, especially for medical, legal, disciplinary, or professional decisions.
Saliva test: recent use and field approach
The saliva test is particularly suited to contexts where recent use is being screened: road safety, workplace safety, awareness campaigns, supervised internal control, or self-monitoring. Depending on the model, it can detect notably THC, cocaine, amphetamines, methamphetamines, opiates, MDMA or benzodiazepines.
Urine test: wider detection window
The urine test is often preferred when multiple substance families need to be detected with a generally wider detection. Depending on the chosen reference, it can detect THC, cocaine, amphetamines, methamphetamines, opiates, MDMA, benzodiazepines, methadone, buprenorphine, barbiturates, tricyclic antidepressants or certain new psychoactive substances.
Substances and families that can be tested depending on the tests
Important limitation: no rapid test detects “all medications” or “all drugs.” Each device works with a specific panel. Before choosing a test, it is necessary to identify the family or families being tested: benzodiazepines, opiates, methadone, buprenorphine, amphetamines, TCAs, barbiturates, THC, cocaine, MDMA, etc.
How to choose the right screening test?
The choice of test depends on the context: personal use, workplace prevention, festive event, internal control, medical-social support or need for guidance after suspected exposure to a substance.
For recent use
The saliva test is generally preferred when recent use needs to be detected, especially in the context of road safety, workplace safety, or self-monitoring.
For broader screening
The urine test often covers more substance families, with a detection window detection period generally longer depending on the substance, frequency of use, and metabolism.
For a company or organization
In the professional environment, screening must be regulated: internal rules, risk positions, respect for confidentiality, employee information, and adapted protocol. AMA Prevention can guide companies towards solutions consistent with their needs.
Misused medications, driving, and workplace safety
Some medications can impair alertness, reflexes, coordination, memory, and danger perception. The risk is even higher when combined with alcohol, cannabis, cocaine, opioids, to benzodiazepines or other psychoactive substances.
Behind the wheel
- Drowsiness and decreased alertness
- Slowed reaction time
- Disinhibited or dangerous driving
- Increased risk of serious accidents
- Saliva testing possible by law enforcement for certain drugs
At work
- Increased risk in safety-critical positions
- Handling machinery, operating vehicles, or sensitive interventions
- Impairment of judgment and coordination
- Employer's prevention responsibility
- Need for a clear, proportionate, and compliant protocol
Remember: a legally prescribed medication can still become incompatible with driving, certain professional tasks or alcohol consumption. In case of doubt, seek advice from a doctor or a pharmacist and carefully read the driving pictograms on medication boxes.
Police saliva test, THC and detection time: what you need to understand
During a roadside check, law enforcement can use a drug saliva test to detect certain drugs, including cannabis, cocaine, amphetamines, methamphetamines, opiates or ecstasy depending on the devices used.
How long can a THC saliva test remain positive?
The detection time of THC in saliva varies depending on several factors: frequency of use, amount consumed, time since last use, metabolism, oral hygiene, and test sensitivity. It can range from a few hours to longer in some regular users.
Can you buy an equivalent saliva test?
Individuals, businesses, and professionals can use saliva screening tests to self-monitoring or prevention. AMA Prevention offers professional Drugdiag® tests, tailored to the needs rapid screening test, with different panels depending on the substances being tested.
Caution: a negative self-test never constitutes permission to drive. The only driving completely safe and compliant remains the absence of consumption of substances that can impair alertness.
Need a reliable test for prevention or self-monitoring?
AMA Prevention supports individuals, businesses, communities, pharmacies, and healthcare professionals and event organizers with reliable, CE-certified screening solutions adapted to field use.
Frequently asked questions about diverted medications and screening
Does a saliva test detect benzodiazepines?
Yes, some saliva tests can include a BZO panel for benzodiazepines. However, the exact test reference must be checked, as not all devices test for the same families.
Does a urine test detect tramadol?
Not automatically. Tramadol may require a specific panel. A standard opiate test may look for certain molecules like morphine or codeine, but it should not be assumed to detect all opioids.
Is pregabalin detected by standard rapid tests?
Not in most standard panels. Pregabalin usually requires a specific test or analysis. It is therefore essential to choose the device according to the substance actually being tested.
Should a positive test be confirmed in a laboratory?
In a medical, legal, professional, or disciplinary context, a rapid test should be considered as a guidance tool. Laboratory confirmation may be necessary depending on the protocol, situation and the consequences of the decision.
Which tests to choose for a company?
For a company, the choice depends on the positions concerned, substances to be tested, internal regulations, the legal framework and prevention protocol. AMA Prevention can guide towards saliva or urine tests adapted to professional needs.
Conclusion
Medication misuse is a major public health issue. Benzodiazepines, opioids, stimulants, pregabalin, antihistamines, or antidepressants can pose significant risks when used outside medical settings, mixed with alcohol or combined with other substances.
Prevention is based on three pillars: clear information, risk reduction and appropriate screening. Rapid tests can be useful, provided their panels are well understood, their limits and the possible need for laboratory confirmation.
Safety reminder
In case of loss of consciousness, fainting, suspected overdose, chemical submission, or accidental ingestion, immediately contact emergency services: 15, 18 or 112. Never leave an unconscious person alone.
Useful sources and reference organizations
- Drug Info Service — information, support, and guidance on drugs and addictions.
- ANSM — official information on medications, misuse risks, and pharmacovigilance.
- Health Insurance — health information, medications, prevention, and care pathways.
- Road Safety — information on driving, alcohol, drugs, and penalties.
