What is a Patient Information Leaflet and why is it useful?

The Patient Information Leaflet (PIL) is the leaflet included in the pack with a medicine. It is written for patients and gives information about taking or using a medicine. It is possible that the leaflet in your medicine pack may differ from this version because it may have been updated since your medicine was packaged.

Below is a text only representation of the Patient Information Leaflet. The original leaflet can be viewed using the link above.

The text only version may be available in large print, Braille or audio CD. For further information call emc accessibility on 0800 198 5000. The product code(s) for this leaflet is: PL 04425/0619 .

Stilnoct 10mg Film-Coated Tablets


Stilnoct 10mg film-coated Tablets

zolpidem tartrate

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Read all of this leaflet carefully before you start taking this medicine because it contains important information for you.

  • Keep this leaflet. You may need to read it again.
  • If you have any further questions, ask your doctor or pharmacist.
  • This medicine has been prescribed for you only. Do not pass it on to others. It may harm them, even if their signs of illness are the same as yours.
  • If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. See section 4.

What is in this leaflet:

1. What Stilnoct is and what it is used for
2. What you need to know before you take Stilnoct
3. How to take Stilnoct
4. Possible side effects
5. How to store Stilnoct
6. Contents of the pack and other information

1. What Stilnoct is and what it is used for

The name of your medicine is Stilnoct 10mg film-coated Tablets (called Stilnoct in this leaflet). Stilnoct contains a medicine called zolpidem tartrate. This belongs to a group of medicines called hypnotics. It works by acting on your brain to help you sleep.

Stilnoct is used for temporary sleep problems in adults that are causing you severe distress or that are affecting your everyday life. This includes sleep problems in adults such as:

  • Difficulty falling asleep
  • Waking in the middle of the night
  • Waking too early

Your doctor will identify your sleep problem wherever possible and the underlying factors before prescribing this medicine for you. The failure of your sleep problems to stop after a 7-14 day course of treatment may indicate you have an underlying disorder, your doctor will assess you at regular intervals.

Stilnoct is used for short-term treatment of insomnia in adults. Do not use long-term. Treatment should be as short as possible, because the risk of dependence increases with the duration of treatment. Ask your doctor for advice if you are unsure.

2. What you need to know before you take Stilnoct

Do not take Stilnoct if:

  • You are allergic (hypersensitive) to zolpidem tartrate or any of the other ingredients of Stilnoct (listed in section 6).
    Signs of an allergic reaction include: a rash, swallowing or breathing problems, swelling of your lips, face, throat or tongue.
  • Your lungs do not work properly (respiratory failure).
  • You have severe liver problems.
  • You have a problem where you stop breathing for short periods at night (sleep apnoea).
  • You have a problem that causes severe muscle weakness (myasthenia gravis).
  • You have been told by a doctor that you have a mental illness (psychosis).
  • You are under the age of 18.

Do not take this medicine if any of the above applies to you. If you are not sure, talk to your doctor or pharmacist before taking Stilnoct.

Warnings and precautions

Talk to your doctor or pharmacist before taking Stilnoct if:

  • You have a history of alcohol or drug abuse.
  • You have liver problems.
  • You have depression or have had another mental illness in the past.
  • You have recently taken Stilnoct or other similar medicines for more than four weeks.
  • You are elderly.

Use of Stilnoct may lead to the development of abuse and/or physical and psychological dependence. The risk of dependence is greater when Stilnoct is used for longer than 4 weeks, and in patients with a history of mental disorders and/or alcohol, illicit substance or drug abuse. Tell your healthcare provider if you have ever had a mental disorder, or have abused or have been dependent on alcohol, substance or drugs.

Some studies have shown an increased risk of suicidal ideation, suicide attempt and suicide in patients taking certain sedatives and hypnotics, including this medicine. However, it has not been established whether this is caused by the medicine or if there may be other reasons. If you have suicidal thoughts, contact your doctor as soon as possible for further medical advice.

Stilnoct can cause drowsiness and decrease your level of alertness. This could cause you to fall, sometimes leading to severe injuries.

If you are not sure if any of the above applies to you, talk to your doctor or pharmacist before taking Stilnoct.

Next-day psychomotor impairment (see also 'Driving and using machines')

The day after taking Stilnoct, the risk of psychomotor impairment, including impaired driving ability may be increased if:

  • You take this medicine less than 8 hours before performing activities that require your alertness.
  • You take a higher dose than the recommended dose.
  • You take Stilnoct while you are already taking other central nervous system depressants or another medicine that increases Stilnoct in your blood, or while drinking alcohol, or while taking illicit substances.

Take the single intake immediately at bedtime.

Do not take another dose during the same night.

Other medicines and Stilnoct

Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines. This includes medicines you buy without a prescription, including herbal medicines. This is because Stilnoct can affect the way some other medicines work. Also some medicines can affect the way Stilnoct works.

Stilnoct may increase the effect of the following medicines:

While taking Stilnoct with the following medicines, drowsiness and next-day psychomotor impairment effects, including impaired driving ability, may be increased.

  • Medicines for some mental health problems (antipsychotics).
  • Medicines for sleep problems (hypnotics).
  • Medicines to calm or reduce anxiety.
  • Medicines for depression.
  • Medicines for moderate to severe pain (narcotic analgesics).
  • Medicines for epilepsy (anti-convulsants).
  • Medicines used for anaesthesia.
  • Medicines for hay fever, rashes or other allergies that can make you sleepy (sedative antihistamines).

While taking Stilnoct with antidepressants including bupropion, desipramine, fluoxetine, sertraline and venlafaxine, you may see things that are not real (hallucinations).

It is not recommended to take Stilnoct with fluvoxamine, ciprofloxacin or St John's Wort (a herbal medicine) used for mood swings and depression.

Risks from concomitant use with opioids

Concomitant use of Stilnoct and opioids (strong painkillers, medicines for substitution therapy and some cough medicines) increases the risk of drowsiness, difficulties in breathing (respiratory depression), coma and may be life-threatening. Because of this, concomitant use should only be considered when other treatment options are not possible.

However, if your doctor does prescribe Stilnoct together with opioids the dosage and duration of concomitant treatment should be limited by your doctor.

Please tell your doctor about all opioid medicines you are taking, and follow your doctor's dosage recommendation closely. It could be helpful to inform friends or relatives to be aware of signs and symptoms stated above. Contact your doctor when experiencing such symptoms.

The following medicines can increase the chance of you getting side effects when taken with Stilnoct. To make this less likely, your doctor may decide to lower your dose of Stilnoct:

  • Some antibiotics such as clarithromycin or erythromycin.
  • Some medicines for fungal infections such as ketoconazole and itraconazole.
  • Ritonavir (a protease inhibitor) – for HIV infections.

The following medicines can make Stilnoct work less well:

  • Some medicines for epilepsy such as carbamazepine, phenobarbital or phenytoin.
  • Rifampicin (an antibiotic) – for infections.

Stilnoct with alcohol

Do not drink alcohol while you are taking Stilnoct. Alcohol can increase the effects of Stilnoct and make you sleep very deeply so that you do not breathe properly or have difficulty waking.

Pregnancy, breast-feeding and fertility


Use of Stilnoct is not recommended during pregnancy. If you are pregnant, think you may be pregnant or are planning to have a baby, ask your doctor for advice.

If used during pregnancy there is a risk that the baby is affected. Some studies have shown that there may be an increased risk of cleft lip and palate (sometimes called "harelip") in the newborn baby.

Reduced fetal movement and fetal heart rate variability may occur after taking Stilnoct during the second and/or third trimester of pregnancy. If Stilnoct is taken at the end of pregnancy or during labour, your baby may show muscle weakness, a drop in body temperature, difficulty feeding and breathing problems (respiratory depression).

If this medicine is taken regularly in late pregnancy, your baby may develop physical dependence and may be at risk of developing withdrawal symptoms such as agitation or shaking. In this case the newborn should be closely monitored during the postnatal period.


Do not take Stilnoct if you are breast-feeding or planning to breast-feed. This is because small amounts may pass into mothers’ milk.

Ask your doctor or pharmacist for advice before taking any medicine if you are pregnant or breast-feeding.

Driving and using machines

Stilnoct has major influence on the ability to drive and use machines such as 'sleep-driving'. On the day after taking Stilnoct (as with other hypnotic medicines), you should be aware that:

  • You may feel drowsy, sleepy, dizzy or confused.
  • Your quick decision-making may be longer.
  • Your vision may be blurred or double.
  • You may be less alert.

A period of at least 8 hours is recommended between taking Stilnoct and driving, using machinery and working at heights to minimize the above listed effects.

Do not drink alcohol or take other psychoactive substances while you are taking Stilnoct as it can increase the above listed effects.

Stilnoct contains lactose

If you have been told by your doctor that you have an intolerance to some sugars, talk to your doctor before taking this medicine.

3. How to take Stilnoct

Always take Stilnoct exactly as your doctor has told you. You should check with your doctor or pharmacist if you are not sure.

Taking this medicine

  • Take this medicine by mouth.
  • Swallow the tablet whole with a drink of water.
  • The recommended dose per 24 hours is 10mg of Stilnoct. A lower dose may be prescribed to some patients.
  • Stilnoct should be taken as a single intake just before bedtime.
  • Make sure you have a period of at least 8 hours after taking this medicine before performing activities that require your alertness.
  • Do not exceed 10mg per 24 hours.
  • The usual length of treatment is 2 days to 4 weeks.

How much to take


  • The usual dose is one Stilnoct tablet (10mg) just before bedtime.


  • The usual dose is half a tablet (5mg) just before bedtime.

Patients with liver problems

  • The usual starting dose is half a tablet (5mg) just before bedtime. Your doctor may decide to increase this to one tablet (10mg) if it is safe to do so.

Children and adolescents

Stilnoct should not be used in people under 18 years old.

If you take more Stilnoct than you should

If you take more Stilnoct than you should, tell a doctor or go to a hospital casualty department straight away. Take the medicine pack with you.

This is so the doctor knows what you have taken.

Taking too much Stilnoct can be very dangerous.

The following effects may happen:

  • Feeling drowsy, confused, sleeping deeply and possibly falling into a fatal coma.

If you forget to take Stilnoct

Stilnoct must only be taken at bedtime. If you forget to take your tablet at bedtime, then you should not take it at any other time, otherwise you may feel drowsy, dizzy and confused during the day. Do not take a double dose to make up for a forgotten tablet.

If you stop taking Stilnoct

Keep taking Stilnoct until your doctor tells you to stop. Do not stop taking Stilnoct suddenly, but tell your doctor if you want to stop. Your doctor will need to lower your dose and stop your tablets over a period of time. If you stop taking Stilnoct suddenly, your sleep problems may come back and you may get a ‘withdrawal effect’. If this happens you may get some of the effects listed below.

See a doctor straight away if you get any of the following effects:

  • Feeling anxious, restless, irritable or confused
  • Headache
  • Faster heartbeat or uneven heartbeat (palpitations)
  • Nightmares, seeing or hearing things that are not real (hallucinations)
  • Being more sensitive to light, noise and touch than normal
  • Relaxed grip on reality
  • Feeling distant from your body or feeling 'puppet-like'
  • Numbness and tingling in your hands and feet
  • Aching muscles
  • Stomach problems
  • Sleep problems come back worse than before
  • Fits (seizures)

4. Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them.

Stop taking Stilnoct and see a doctor or go to a hospital straight away if:

  • You have an allergic reaction. These signs may include: an itchy, lumpy rash (hives) or nettle rash (urticaria), swelling of the hands, feet, ankles, face, lips or throat which may cause difficulty in swallowing or breathing

Tell your doctor as soon as possible if you have any of the following side effects:

Common side effects (may affect less than 1 in 10 people)

  • Poor memory while taking Stilnoct (amnesia) and strange behaviour during this time. This is more likely to affect you in the few hours after you take this medicine. By having 7-8 hours sleep after taking Stilnoct, this is less likely to cause you a problem
  • Sleeping problems that get worse after taking this medicine
  • Seeing or hearing things that are not real (hallucinations)

Uncommon side effects (may affect less than 1 in 100 people)

  • Blurred eyesight or ‘seeing double’

Rare side effects (may affect less than 1 in 1,000 people)

  • Being less aware of your environment
  • Falling, especially in the elderly

Sleep-driving and other sleep-related behaviour

There have been some reports of people doing things while asleep that they do not remember when waking up after taking a sleeping medicine. This includes sleep-driving, sleepwalking, preparing and eating food, and having sex. Alcohol and some medicines for depression or anxiety can increase the chance that this serious effect will happen.

Tell your doctor or pharmacist if any of the following side effects get serious or lasts longer than a few days:

Common side effects (may affect less than 1 in 10 people)

  • Diarrhoea
  • Feeling sick (nausea) or being sick (vomiting)
  • Abdominal pain
  • Respiratory infection
  • Headache
  • Feeling tired or agitated
  • Nightmares
  • Depression
  • Feeling dizzy
  • Feeling drowsy or sleepy
  • Back pain

Uncommon side effects (may affect less than 1 in 100 people)

  • Itching skin or skin rash
  • Excessive sweating
  • Feeling restless, aggressive, confused or irritable
  • Feeling overly happy/confident (euphoric)
  • Unusual skin sensations such as numbness, tingling, pricking, burning or creeping on the skin (paraesthesia)
  • Tremor
  • Sleepwalking (see 'Sleep-driving and other sleep-related behaviour')
  • Lack of concentration
  • Speech problems
  • Blurred vision
  • Changes in the amount of liver enzymes – shown up in the results of blood tests
  • Changes in appetite or behaviour concerning appetite
  • Muscle pain
  • Muscle spasms
  • Limp or weak muscles

Rare side effects (may affect less than 1 in 1,000 people)

  • Itchy, lumpy rash (urticaria)
  • Thinking things that are not true (delusions)
  • Changes in sex drive (libido)
  • You have discolouration of the skin or eyes, pain in the abdomen (stomach) or a bloated feeling, severe itching, pale or bloody stools, extreme weakness, nausea or loss of appetite. This could be caused by an infection or injury to the liver
  • An illness where removal of bile from the liver is blocked (cholestasis). Signs include jaundice, rash or fever and the colour of your water (urine) becomes darker
  • Changes in the way you walk

Very rare side effects (may affect less than 1 in 10,000 people)

  • Any changes of vision, in particular loss of vision
  • Slower breathing (respiratory depression)
  • Becoming dependent on Stilnoct

Not known (frequency cannot be estimated from available data)

  • A feeling of being out of touch with reality and being unable to think or judge clearly (psychosis)
  • Feeling angry or showing unusual behaviour
  • Needing to take more Stilnoct in order to sleep

Reporting of side effects

If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme at: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store.

By reporting side effects you can help provide more information on the safety of this medicine.

5. How to store Stilnoct

Keep this medicine out of the sight and reach of children.

Do not use Stilnoct after the expiry date which is stated on the carton or blister after EXP. The expiry date refers to the last day of that month.

Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.

6. Contents of the pack and other information

What Stilnoct 10mg film-coated Tablets contain

  • Each tablet of Stilnoct contains 10mg of the active substance zolpidem tartrate.
  • Other ingredients are lactose monohydrate, microcrystalline cellulose, hypromellose, titanium dioxide (E171), sodium starch glycollate, magnesium stearate and macrogol 400.

What Stilnoct 10mg film-coated Tablets look like and contents of the pack

Stilnoct is a white to off-white, film-coated, oblong (rectangle) shaped tablet with a scored and engraved ‘SN 10’ on one side contained within clear PVC/ foil blisters in cartons containing 4 or 28 tablets.

Not all pack sizes may be marketed.

Marketing Authorisation Holder and Manufacturer

Marketing Authorisation Holder

410 Thames Valley Park Drive
Tel: 0845 372 7101


Delpharm Dijon
6, Blvd. De L’Europe
21800 Quétigny

This leaflet does not contain all the information about your medicine. If you have any questions or are not sure about anything, ask your doctor or pharmacist.

This leaflet was last revised in: July 2019

© Sanofi, 1993-2019