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Last updated: October 2026.
If you are struggling with sleep, you may be weighing up whether to ask your GP about sleep medication or try a supplement such as CBD. They are very different things, with different evidence, rules and risks. This guide compares them honestly, so you can have a better-informed conversation with your GP.
Important: this is general information, not medical advice. Never stop, start or change a prescribed medicine without speaking to your doctor.
The short answer
- Sleep medications are prescription medicines with proven effects in the short term, but also side effects and risks, which is why they are usually prescribed briefly.
- CBD is a food supplement. It is not a treatment for insomnia, and the research on CBD and sleep is limited.
- For chronic insomnia, guidelines recommend cognitive behavioural therapy for insomnia (CBT-I) before medication.
- Do not combine them without checking with your GP or pharmacist, as CBD can interact with sedating medicines.
Why sleep problems happen
Before comparing options, it helps to know what is behind poor sleep, because the right approach depends on the cause. Common contributors include:
- Stress and worry, which keep the mind active at bedtime.
- An irregular schedule, including late nights and long lie-ins.
- Caffeine and alcohol, especially later in the day.
- Screens and bright light in the evening.
- Pain, reflux or needing the toilet during the night.
- Medical conditions such as sleep apnoea, restless legs syndrome, thyroid problems, menopause symptoms or depression.
- Some medicines, including certain decongestants and steroids.
A short spell of poor sleep during a stressful time is common and usually settles. When it lasts for months, it is worth looking at the causes with your GP rather than reaching straight for a product.
How sleep medications work
Several types of medicine are used for sleep problems in Ireland, all on prescription:
| Type | Examples | Notes |
|---|---|---|
| “Z-drugs” | Zopiclone, zolpidem | Usually short courses; can cause next-day drowsiness |
| Benzodiazepines | Various | Short-term use only because of dependence risk |
| Melatonin | Prolonged-release melatonin | Prescription-only in Ireland; mainly for older adults or specific cases |
| Sedating antidepressants and others | Various, at low doses | Used in particular circumstances by your doctor |
Most of these work by increasing activity in the brain systems that promote sleepiness. They can help people get through a difficult period, but they do not fix the underlying causes of insomnia, and some become less effective with regular use. Stopping some of them suddenly can cause rebound insomnia, which is why doctors usually reduce them gradually.
What CBD is, and is not
CBD (cannabidiol) is a non-intoxicating compound from hemp, sold in Ireland as a food supplement. It does not cause a high, and the World Health Organization’s 2018 review found no evidence of abuse or dependence potential in humans.
Research on CBD and sleep is still at an early stage, with mixed results from small studies. Food supplements cannot claim to treat insomnia or any other condition. So CBD is not an alternative to medical treatment for a sleep disorder. Some people simply like to include it in a regular evening routine.
CBD vs sleep medications at a glance
| Sleep medications | CBD | |
|---|---|---|
| Category | Prescription medicine | Food supplement |
| Evidence for sleep | Proven short-term effects | Limited, early research |
| Who decides | Your GP or consultant | You, ideally after checking with your GP or pharmacist |
| Common side effects | Next-day drowsiness, dizziness, dependence risk with some | Tiredness, dry mouth, stomach upset in some people |
| Interactions | Many | Can interact with some medicines, including sedatives |
| Typical use | Short courses | Daily routine |
The option with the best evidence: CBT-I
For long-term (chronic) insomnia, clinical guidelines recommend cognitive behavioural therapy for insomnia, CBT-I, as the first treatment, ahead of medication. It is a structured programme, usually over several weeks, that addresses the habits and thoughts that keep insomnia going: irregular sleep times, spending too long in bed awake, and worrying about sleep. It is available through some GPs and psychologists, and as structured online programmes. Ask your GP what is available near you.
Can you take CBD with sleep medication?
Check with your GP or pharmacist first. CBD is broken down by the same liver enzymes as many medicines, and it may increase drowsiness when combined with sedating medicines such as sleeping tablets, some antidepressants and some painkillers. Your pharmacist can check your specific medicines quickly.
Over-the-counter options in Ireland
Pharmacies in Ireland sell some sleep products without a prescription, such as sedating antihistamines. These can cause next-day drowsiness and are generally meant for occasional, short-term use; they are not suitable for everyone, including older adults and people with certain conditions. Always ask the pharmacist, and tell them about any other medicines or supplements you take, including CBD.
Habits that help whatever you choose
- Get up at the same time every day, including weekends.
- Get daylight in the morning.
- Keep caffeine to the morning and early afternoon.
- Keep alcohol light and not close to bedtime.
- Create a 30 to 60 minute wind-down routine without screens.
- Keep the bedroom cool, dark and quiet.
- If you cannot sleep, get up for a while rather than lying awake.
Read more in why sleep aids often disappoint.
If you decide to try CBD
- Speak to your GP or pharmacist first if you take any medication.
- Choose a product with a lab report showing its CBD content and no detectable THC.
- Start low, such as 5 drops of a 10% CBD oil, at the same time each evening.
- Keep a sleep diary for two to four weeks so you can judge it fairly.
- Do not drive if you feel drowsy.
Sleep in older adults
Sleep naturally becomes lighter with age, with more night-time waking. Older adults are also more likely to take several medicines, and sedating medicines raise the risk of falls, confusion and next-day drowsiness. That makes it especially important for older people to check with a GP or pharmacist before trying any sleep aid, including supplements such as CBD, and to review existing medicines regularly.
Questions to ask your GP
- What might be causing my sleep problem?
- Is CBT-I available to me, in person or online?
- Is medication appropriate for me, and for how long?
- Could any of my current medicines be affecting my sleep?
- Is it safe for me to take a supplement such as CBD with my current medicines?
When to see your GP
See your GP if poor sleep has lasted more than a few weeks, is affecting your daytime life, or comes with loud snoring, pauses in breathing, restless legs, or low mood. These can point to conditions that need specific treatment.
Frequently asked questions
Is CBD a replacement for sleeping tablets?
No. CBD is a food supplement, not a medicine, and it cannot claim to treat insomnia. Never stop or change a prescribed medicine without speaking to your doctor.
Can I take CBD with sleeping tablets?
Speak to your GP or pharmacist first. CBD can interact with some medicines, including sedatives, and together they may make you drowsier than expected.
What sleep medications are used in Ireland?
Commonly prescribed options include short courses of “Z-drugs” such as zopiclone, some benzodiazepines, certain antidepressants used at low doses, and melatonin, which is prescription-only in Ireland. Your GP will decide what, if anything, is appropriate.
Why do doctors only prescribe sleeping tablets for short periods?
Some can become less effective over time, cause next-day drowsiness, and lead to dependence, so guidelines recommend short courses and non-drug approaches first.
What is CBT-I?
Cognitive behavioural therapy for insomnia is a structured programme that changes the habits and thoughts that keep insomnia going. It is the first-line treatment recommended for chronic insomnia.
Is melatonin available without a prescription in Ireland?
No. Melatonin is a prescription-only medicine in Ireland.
Does CBD cause dependence?
The World Health Organization’s 2018 review found no evidence of abuse or dependence potential with CBD in humans.
How do I come off sleeping tablets?
Only with your doctor’s guidance. Stopping some sleeping medicines suddenly can cause withdrawal effects and rebound insomnia, so they are usually reduced gradually.
Is it safe to take CBD every night?
Many people take CBD daily. Stick to the amount on the label, and check with your GP or pharmacist first if you take medication, are pregnant or breastfeeding.
Can CBD cause drowsiness the next morning?
Some people feel a little drowsy after CBD, especially at first. If you notice this, take it earlier in the evening or reduce the amount, and do not drive if you feel drowsy.
Do herbal remedies interact with sleeping tablets?
Some can. Valerian, for example, may add to drowsiness. Always tell your pharmacist about any herbal products or supplements you take.
What is the difference between insomnia and a bad night?
Everyone has bad nights. Insomnia usually means difficulty falling or staying asleep at least three nights a week for three months or more, affecting how you feel during the day.
Disclaimer: CBD is sold as a food supplement. It is not intended to diagnose, treat, cure or prevent any disease and is not a substitute for medical advice. Always consult a healthcare professional before starting a new supplement, especially if you take medication, are pregnant or breastfeeding.
