Almost everyone has a bad night's sleep from time to time. The important clinical question is not "did I sleep badly last night?" but "has this become a pattern that is affecting how I function during the day?". Getting the answer right matters, because acute (short-term) and chronic (persistent) insomnia are treated very differently in UK practice. This article explains the difference, what current NICE guidance recommends, when prescription options come into the picture, and what should prompt you to talk to a clinician sooner rather than later.

Acute vs chronic insomnia

Acute insomnia is short-term difficulty falling asleep, staying asleep or waking too early. It is usually triggered by something identifiable — stress, bereavement, illness, jet lag, a new job, a period of pain — and typically settles within days to a few weeks once the trigger passes or is managed. Reassurance, brief practical advice and time are usually enough.

Chronic insomnia is defined as difficulty falling or staying asleep at least three nights a week, for three months or more, with a daytime consequence such as fatigue, low mood, poor concentration or reduced daytime function. Chronic insomnia rarely resolves on its own once it has settled into a pattern. Sleep-related behaviours — clock-watching, spending long hours in bed trying to sleep, catastrophising a bad night — start to keep the problem going even after the original trigger has gone. This is why the treatment approach shifts.

Sleep hygiene — helpful, but rarely enough alone

Sleep hygiene is a set of practical habits that support good sleep. Regular sleep and wake times, limiting caffeine after early afternoon, reducing evening alcohol, avoiding heavy meals close to bedtime, dimming lights in the last hour, keeping the bedroom cool and dark, and reserving the bed for sleep and sex rather than working or scrolling on a phone. These make a real difference for most people struggling with occasional poor sleep.

For established chronic insomnia, however, sleep hygiene on its own is rarely enough. Patients who have already tried the standard advice and are still stuck should be reassured that this does not mean they have failed — it means they need a more structured treatment approach. NICE's positioning here is clear: sleep hygiene alone is not the recommended treatment for chronic insomnia.

CBT-I — the first-line treatment

Cognitive behavioural therapy for insomnia (CBT-I) is a short course of structured therapy — typically four to eight sessions — that combines behavioural techniques (stimulus control, sleep restriction), cognitive work on unhelpful thoughts about sleep, and relaxation training. It is the recommended first-line treatment for chronic insomnia in current UK NICE guidance because its benefits last long after the sessions have finished, unlike sleeping tablets.

Access to face-to-face CBT-I on the NHS varies by area, but digital CBT-I programmes have expanded UK availability significantly. NICE has recommended digital CBT-I platforms in NHS services. If a full course is not immediately available, self-help workbooks and NHS-endorsed apps can be a useful bridge. A clinician can help point you toward the right route for your situation.

When medication is considered — and the caveats

Prescription sleep medication is generally reserved for two situations: short-term severe insomnia where daytime functioning is significantly impaired and time is needed to arrange other treatment, or specific circumstances where a clinician judges a brief course is safer than continuing without treatment. UK prescribing guidance is deliberately cautious.

Z-drugs (zopiclone, zolpidem)

Zopiclone is a commonly prescribed short-term hypnotic. Zolpidem is another option. Both work on GABA receptors, similarly to benzodiazepines. UK guidance recommends the shortest effective course — typically no more than two to four weeks — because of the risk of dependence, tolerance and rebound insomnia when stopped. They can also cause next-day drowsiness, unsteadiness (a particular concern in older people) and impaired driving in the morning. They should not be combined with alcohol.

Melatonin

Melatonin has a specific licensed indication in the UK: prolonged-release melatonin is licensed as a short-term treatment (typically up to 13 weeks) for primary insomnia in people aged 55 and over. In other age groups, its use is off-label and is a clinician-led decision. Melatonin bought unregulated online is not the same as a licensed UK product — dose accuracy, purity and formulation can all vary, which is one reason clinicians recommend routes with proper regulatory oversight.

Sedating antihistamines

Products such as diphenhydramine and promethazine are sold over the counter as sleep aids. They can cause next-day sedation and are not recommended for regular use, particularly in older adults, where they can contribute to falls and cognitive side effects. They are not a substitute for treating the underlying insomnia.

Red flags — when to see a clinician sooner

Insomnia is common, but certain features suggest a specific condition that needs faster review rather than more sleep advice:

  • Loud snoring, witnessed breathing pauses or waking gasping. These suggest obstructive sleep apnoea, which is diagnosed and treated separately.
  • Marked daytime sleepiness — falling asleep unintentionally while driving, at work or in conversation — regardless of how much time was spent in bed.
  • Restless, uncomfortable leg sensations at night that improve with movement, suggesting restless legs syndrome.
  • Low mood, anxiety, or thoughts of self-harm. Depression and anxiety both cause and are worsened by insomnia, and treating them changes the picture.
  • Chronic pain that is not adequately controlled and is disrupting sleep.
  • Insomnia that started after a bereavement or major life event and is not improving after a few weeks, or is causing significant distress.

Menopause-related sleep disturbance is another common driver in mid-life women — our overview of HRT and menopause pathways may be relevant background reading if that fits your picture.

Chronic insomnia often has a partner condition

When insomnia has been present for months, it is worth actively looking for a condition that keeps it going. Common contributors include depression, anxiety disorders, chronic pain, gastro-oesophageal reflux, prostate symptoms causing nocturnal waking, and untreated obstructive sleep apnoea. Treating the partner condition often makes the insomnia much easier to shift, and can reduce or remove the need for sleep medication.

What a Farmeci consultation covers

A Farmeci consultation for insomnia typically starts with a structured review of the sleep pattern, how long it has been going on, what has been tried, what daytime effect it is having, and any red-flag features. Where a red flag or partner condition is identified, the clinician will signpost the right NHS pathway — for example, sleep apnoea assessment, mental-health support, or GP review for pain or menopause. Where CBT-I is the right next step, they will point you to the best-available route, whether that is a self-help programme, a digital service or an NHS referral. Where a short course of prescription medication is genuinely appropriate — and safe in your specific case — that can be discussed within the consultation.

What good treatment does — and doesn't do

Effective treatment for chronic insomnia does not mean perfect sleep every night. It means predictable, restorative sleep most of the time, less time lying awake worrying about sleep, and a return to normal daytime functioning. That is a realistic outcome for many people who engage with CBT-I, particularly when partner conditions are also addressed. Sleeping tablets, by contrast, can help acutely but rarely fix the underlying pattern — which is why the UK approach places them second, not first.