Benzodiazepines, Z-drugs and dependence: current safety context
Benzodiazepines, such as diazepam, lorazepam, alprazolam and clonazepam, and Z-drugs, such as zolpidem or zopiclone, may be useful in limited clinical situations. The important safety point is that they also carry meaningful risks, especially when use becomes regular, prolonged, unsupervised, or combined with alcohol, opioids, or other sedating medicines.
How to use this section: This section is intended to help you prepare for a more informed conversation with a qualified healthcare professional. It cannot diagnose you, assess whether a medication is suitable for you, or replace a clinician who can consider your full situation.
If you are already taking medication, please do not start, stop, reduce, increase, combine, switch, or restart it because of something you read here. Medication decisions need to be discussed with a qualified prescriber who can consider your diagnosis, other relevant conditions, physical health, other medicines, substance use, pregnancy or breastfeeding situation, risks, and preferences.
Key safety points to discuss
- Dependence and withdrawal can occur even when benzodiazepines are taken as prescribed. A person may feel that the original anxiety or insomnia is returning, but withdrawal or rebound symptoms may also be contributing.
- Stopping suddenly or reducing too quickly can be dangerous. Withdrawal may include anxiety, insomnia, agitation, tremor, perceptual changes, confusion, hallucinations, or seizures, and needs individual clinical planning.
- Sedation, slowed reaction time, memory problems, falls, accidents, driving risk, and overdose risk are central safety concerns. These risks can be higher with older age, respiratory illness, sleep apnoea, pregnancy or breastfeeding, substance use, other sedatives, and some other physical or mental-health conditions.
- If tapering is appropriate, current guidance emphasises a gradual, collaborative plan that can be adjusted to symptoms, dose, duration of use, other medicines, and the person's wider support situation.
Questions that may help with a prescriber
- Why was this medicine started, and is that reason still present?
- What are the benefits, risks, alternatives, and monitoring needs in my particular situation?
- Could alcohol, opioids, sleep medication, pain medication, pregnancy, breastfeeding, respiratory illness, sleep apnoea, trauma symptoms, or other relevant conditions change the risk?
- If reducing is appropriate, what pace, follow-up, warning signs, and non-medication supports would make the plan safer?
When to use urgent help
Use urgent medical or emergency help for overdose concerns, severe allergic reaction, seizures, chest pain, fainting, severe confusion, breathing problems, dangerous withdrawal symptoms, new mania or psychosis, severe agitation, or thoughts of harming yourself or someone else. In Ireland call 112 or 999, or go to the nearest Emergency Department. Outside Ireland, use your local emergency number.
Related reading and contact routes
Sources checked for this update
- ASAM 2025 Joint Clinical Practice Guideline on Benzodiazepine Tapering
- FDA benzodiazepine boxed-warning safety communication
- NICE NG215: medicines associated with dependence or withdrawal symptoms
- NICE CG113: generalised anxiety disorder and panic disorder in adults
- CDC: polysubstance overdose prevention
- MedlinePlus: diazepam drug information
- Johns Hopkins Psychiatry Guide: benzodiazepines
- Cleveland Clinic: benzodiazepines uses, side effects and risks
- Harvard Health: medication classes that may increase fall risk
- Harvard Health: risks of sleep aids
Benzodiazepines and z-drugs are some of the most widely prescribed medications. They work as anxiolytics, sleep inducers, and in various other capacities, such as muscle relaxants and against epileptic seizures. For people with anxiety and panic attacks, they can normalize life while long-term treatment options are explored, and they can be used as emergency standby medication. However, they also carry risks, such as cognitive impairment and sedation in the short run and tolerance and dependence in the long run. Fortunately, there are alternatives to benzodiazepines and z-drugs, which can be used in many cases.
Keywords: benzodiazepine, z-drug, medication, psychiatry
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© 2018 Christian Jonathan Haverkampf