Do not combine sleeping tablets with alcohol. Both suppress the nervous system, and together the effect is greater than either alone. This is the combination behind a meaningful share of the serious harm associated with sleeping tablets.
This applies to Z-drugs such as zolpidem and zopiclone, to benzodiazepines, and to sedating antihistamines sold without a prescription. The last group catches people out, because a product bought off a shelf does not feel like something that would interact with a glass of wine.
Common side effects and early adjustment effects
Together they produce more of everything the tablet does on its own: deeper drowsiness, worse coordination, more unsteadiness, more pronounced memory gaps, and greater impairment the following morning.
The practical risks are getting up in the night and falling, and being more impaired the next morning than you feel. See next-day drowsiness.
Serious mood, behaviour or physical symptoms to take seriously
Suppressed breathing is the serious risk. Get emergency help for very slow or shallow breathing, extreme drowsiness, blue or grey lips, or someone who cannot be roused. Do not leave them to sleep it off. Add an opioid painkiller to the combination and the risk rises further.
Complex sleep behaviours. Alcohol is the single biggest factor in sleepwalking, sleep-eating and even sleep-driving on sleeping tablets, all with no memory afterwards. If this has happened once, contact your prescriber rather than continuing.
Memory gaps. The combination can produce blank periods around the time of the dose, during which someone may appear awake and functioning.
Risk is higher for older adults, anyone with sleep apnoea or a breathing condition, and anyone taking other sedating medicines.
Sexual, sleep, weight and emotional side effects
Alcohol also works against the reason you are taking the tablet. It helps people fall asleep and then disrupts sleep in the second half of the night, causing early waking and unrefreshing sleep. Using both to treat insomnia tends to produce worse sleep than either alone.
Both can also deepen low mood, which matters if sleep problems sit alongside depression or anxiety.
Interactions, alcohol, pregnancy and other risk factors
If you have already had a drink, do not take a sleeping tablet that night. Skipping one night is not harmful. That is the practical rule worth remembering, since the decision usually arises in the evening rather than in a pharmacy.
Leaving a gap of a few hours does not reliably solve it, because alcohol clears slowly and both act for hours. Ask your prescriber what applies to your specific medicine rather than assuming a gap is enough.
Also check any night-time cold remedy, which may contain a sedating antihistamine and add to the same effect.
What to ask your doctor before changing dose or stopping
Be honest about what you drink. Prescribers ask in order to choose safely, and an accurate answer may change what is prescribed. If drinking and sleeping tablets have become a regular combination, say so, since that is a pattern worth addressing rather than concealing.
- Is any alcohol acceptable with this specific tablet?
- What should I do on a night when I have had a drink?
- Does anything else I take add to the sedation?
- Am I safe to drive the next morning?
- What non-medicine options exist for my sleep?
Related mental health medication guides
- Sleeping tablet side effects
- Zolpidem and zopiclone
- Mental health medication and alcohol
- Sleeping pill withdrawal symptoms
- Report a side effect in South Africa
Medical Disclaimer: This content is for informational and educational purposes only and does not constitute medical diagnosis, prescription, or professional advice. Always read the patient information leaflet and consult a qualified doctor or pharmacist regarding any medicine or health concern.