A large share of the patients who arrive here are taking both an opioid for pain and a benzodiazepine — alprazolam, clonazepam, diazepam, lorazepam — for anxiety or sleep. Often each was started by a different prescriber, for a defensible reason, without either one seeing the whole list.
One of the first conversations we have is that this combination needs to come apart. Patients understandably ask why another physician started it if it is dangerous. This is the longer answer.
The two drugs fail your breathing in different ways
Opioids act at opioid receptors — mu, kappa and delta — and among other effects they blunt the brainstem’s response to rising carbon dioxide. Benzodiazepines act somewhere else entirely: they potentiate GABA-A, the central nervous system’s principal inhibitory signal.
Two different mechanisms, one shared consequence. Both reduce respiratory drive.
Taken alone at prescribed doses, an opioid usually produces sedation and analgesia, and serious respiratory events are uncommon outside substantial overdose. A benzodiazepine alone is similarly survivable in most single-agent overdoses.
Together they are synergistic rather than additive — the combined suppression is greater than the sum of each drug’s separate effect. The failure mode is that the drive to breathe simply does not arrive. Carbon dioxide accumulates, and the person does not experience air hunger to warn them.
This is not a fringe position. The FDA carries a boxed warning on the concurrent use of opioids and benzodiazepines, citing exactly this risk.
Alcohol belongs in this conversation too. It acts on the same GABA-A system, which is why patients who cannot obtain a benzodiazepine sometimes substitute alcohol, and why the combination of alcohol with an opioid carries the same synergy.
Coming off a benzodiazepine is harder than coming off an opioid
This surprises most patients, and it is the reason we treat the taper so carefully.
Opioid withdrawal is miserable and it is rarely dangerous. It presents as sympathetic overdrive — feeling cold, goosebumps, nausea, vomiting, cramping, sleeplessness. It is genuinely awful and it does not usually threaten life.
Benzodiazepine withdrawal can cause seizures. Abrupt cessation after sustained use is a medical emergency, not a matter of willpower, and clinically we see more serious harm from people stopping benzodiazepines on their own than from people stopping opioids on their own.
So: do not stop a benzodiazepine abruptly, and do not taper it without medical supervision — not after years, not after six months, not after one month. Do not start, stop, or change any medication without consulting your physician.
Dependence also develops more readily and more stubbornly than most patients expect, and in our experience it is harder to reverse than opioid dependence.
What the taper actually looks like
A benzodiazepine wean is slow and deliberately front-loaded. Early reductions are proportionally larger and better tolerated; the last portion of the dose is disproportionately difficult. Six months or more is normal, and rushing the tail is how tapers fail.
Some patients cannot be fully weaned. Severe PTSD and certain psychiatric presentations are real exceptions, and in those cases the taper may be extremely gradual or may stop short of zero. Getting there requires substantial emotional support and genuine relearning, not just a dosing schedule — which is why this work sits alongside the psychological side of pain rather than separate from it. See the neurobiology of a stuck alarm.
There are also legitimate indications where a benzodiazepine remains the right drug — notably severe spasticity, including sphincter spasticity, where the available antispasmodics do not achieve what a benzodiazepine does. Those cases are treated on their merits.
The memory problem nobody mentions
Benzodiazepines impair the formation of new memories. This is not sedation and it is not aging.
Patients describe waking to evidence of an evening they cannot recall — crumbs in the bed, a kitchen used. More seriously, some have driven and have no recollection of it. These are not rare curiosities; they are a characteristic effect of the drug class.
The sleep angle deserves particular attention, because it is where most of this quietly happens. Patients frequently use a benzodiazepine as a sleep aid, and several common sleep medications act at the same GABA-A benzodiazepine site — zolpidem and eszopiclone among them. Carisoprodol is not itself a benzodiazepine, but it metabolises to meprobamate, which acts similarly.
What these agents produce is not restorative sleep. They distort sleep architecture, particularly REM. The subjective experience of having slept improves largely because the memory of lying awake is not laid down. We covered a related mechanism in common sleep aid could hinder brain waste removal.
Why this is a pain conversation at all
Reducing medication burden is most of what this practice does. The interventional and metabolic work exists precisely so that patients have something to step onto as medication comes down — see opioid tapering: medication is a bridge, not a destination and why opioids stop working.
Poor sleep amplifies pain, impaired memory undermines every self-management strategy we might teach, and respiratory suppression at night worsens the sleep it was meant to fix. Unwinding this combination is not an obstacle to pain treatment. It is part of it.
Frequently asked questions
Why did another doctor prescribe both if it is dangerous?
Usually because each was started separately, for a reasonable indication, without one prescriber seeing the full list. That is a coordination failure rather than a competence failure — but the combined risk is real regardless of how it arose, and the FDA’s boxed warning reflects it.
Can I just stop my benzodiazepine?
No. Abrupt cessation after sustained use can cause seizures. This requires a supervised, gradual taper. Do not start, stop, or change any medication without consulting your physician.
Which is worse to come off, opioids or benzodiazepines?
Benzodiazepines, by a considerable margin. Opioid withdrawal is severe but rarely dangerous; benzodiazepine withdrawal can be life-threatening. See opioid tapering: medication is a bridge, not a destination.
Is my sleeping tablet a benzodiazepine?
Possibly not by name, but several act at the same receptor site — zolpidem and eszopiclone among them — and carisoprodol metabolises to a compound with similar activity. Bring the actual bottles to your appointment. See common sleep aid could hinder brain waste removal.
Are there cases where a benzodiazepine is the right drug?
Yes — severe spasticity including sphincter spasticity, and some psychiatric presentations where a full wean is not achievable. Those are decided case by case.
Where can I be evaluated?
Padda Institute, 4477 Woodson Rd, Suite 100, St. Louis, MO 63134, serving the St. Louis region across Missouri and Illinois. Call (314) 481-5000 or text (314) 886-5902.
Key takeaways
- Opioids act at opioid receptors, benzodiazepines at GABA-A; both reduce respiratory drive and together the effect is synergistic.
- The FDA carries a boxed warning on concurrent use. Alcohol carries the same interaction.
- Benzodiazepine withdrawal can cause seizures — never stop abruptly or unsupervised.
- A realistic wean is six months or longer, front-loaded, with the final portion the hardest.
- Several common sleep medications act at the same receptor site and carry the same memory effects.
- Severe spasticity and some psychiatric cases are genuine exceptions.
Medically reviewed by Gurpreet Singh Padda, MD, MBA, MHP — Board Certified in Anesthesiology, Pain Medicine, Interventional Pain Management, Addiction Medicine, and Obesity Medicine. Last reviewed August 2026.
This article is educational and is not a substitute for evaluation, diagnosis, or treatment by a physician. Individual results vary. Do not start, stop, or change any medication without consulting your physician.
Find out what is actually driving your pain
Evaluation at the Padda Institute starts by identifying the pain generator and the metabolic terrain it is running on — not by adding another prescription.
Book an appointment or call (314) 481-5000 · text (314) 886-5902
Padda Institute Center for Interventional Pain Management, 4477 Woodson Rd, Suite 100, St. Louis, MO 63134 — serving the St. Louis region across Missouri and Illinois.
Dr. Gurpreet Singh Padda, MD, MBA, MHP
