Yes. Sleeping tablets can cause next-day drowsiness, tiredness or reduced alertness in some people. Depending on the medicine, you may also notice slower reactions, difficulty concentrating, dizziness, poor coordination or a “foggy” feeling the morning after taking it. Importantly, some insomnia medicines can affect driving and other activities requiring full alertness even when you feel awake.
The exact risk depends on the sleeping tablet, how long its effects last, your individual response, other medicines or substances you use, and whether you had enough time to sleep. For example, next-day sleepiness is a recognised side effect of medicines such as zolpidem and zopiclone.
If you wake up feeling drowsy, dazed, dizzy, confused or less alert than usual, do not drive, operate machinery or do safety-sensitive work until you are fully alert. Check your patient information leaflet and speak to a doctor or pharmacist if the problem is persistent, severe or affecting your ability to function safely.
For broader information about these medicines, see the sleeping tablet side effects guide or the Mental Health Medication Side Effects hub.
This article provides general medicine-safety information and cannot determine whether a particular medicine is causing your symptoms. Do not change or stop prescribed treatment without appropriate medical advice.
How sleeping Tablets Next Day Drowsiness can be linked to medicines or supplements
Sleeping tablets work by helping the brain and body become ready for sleep. With some medicines, enough of the active drug may still be affecting the nervous system when you wake up. This can result in what is often described as a “hangover” effect the following morning.
Next-day effects can include:
- feeling unusually sleepy or tired
- difficulty waking fully
- slower thinking or reaction times
- reduced concentration
- dizziness or feeling unsteady
- poor coordination
- feeling dazed or mentally foggy
- difficulty carrying out tasks requiring sustained attention.
The FDA warns that medicines used for insomnia can cause next-morning impairment and that a person may be affected even if they feel fully awake. Zolpidem is one well-documented example, although next-day impairment is not limited to a single sleeping medicine.
The timing and severity of drowsiness vary considerably between people. A medicine that causes little morning sleepiness in one person may have a stronger or longer-lasting effect in another.
Other medicines, herbal products or substances that cause sedation can also add to the effect of a sleeping tablet. For example, some antihistamines, medicines for anxiety or mental health conditions, strong pain medicines and other sleep-promoting products may increase drowsiness when used with certain sleeping medicines. A pharmacist can check your complete medicine and supplement list for possible additive effects or interactions.
Priority related pages
If your main concern is the medicine itself rather than the specific symptom, start with the sleeping tablet side effects guide.
If you are comparing sleep medicines with other treatments used for anxiety, depression or related mental health conditions, the Mental Health Medication Side Effects hub provides the wider cluster of safety information.
How to choose the right next guide
Use this page when your main concern is feeling sleepy or impaired the morning after taking a sleeping tablet.
A medicine-specific guide is more useful when you know the exact product or active ingredient and want to check its recognised side effects, warnings and interactions.
Whatever guide you use, online information should not be used to make your own dosage or treatment changes. Check the patient information leaflet supplied with your medicine and speak to a pharmacist or prescribing healthcare professional if next-day impairment is affecting you.
Medicines and product categories that may be associated with this symptom
Not every sleeping tablet has the same duration of action or side-effect profile. The risk of next-day drowsiness therefore depends partly on what you have taken.
Priority related pages
Prescription sleeping medicines
Prescription medicines used specifically for insomnia can cause morning drowsiness or reduced alertness in some people. Zolpidem, for example, is associated with next-day sleepiness, slower reactions, reduced coordination and possible impairment when driving or operating machinery.
Zopiclone can also cause people to feel tired, sleepy, dazed or less alert the following day.
These examples do not mean that everyone taking these medicines will experience next-day effects.
Over-the-counter sleep products
Some non-prescription sleep aids also have sedating effects. The FDA notes that over-the-counter insomnia medicines can carry a risk of next-morning impairment as well. Do not assume that a product is non-sedating simply because it can be purchased without a prescription.
Other sedating medicines
A sleeping tablet may not be the only contributor. Depending on the specific products involved, drowsiness may be increased by medicines such as sedating antihistamines, certain medicines used for anxiety or other mental health conditions, some epilepsy treatments and strong pain medicines.
Herbal products and supplements
“Natural” does not automatically mean non-sedating or interaction-free. Some complementary products can make people sleepy, and information about interactions between supplements and prescription sleeping medicines may be limited. Tell your doctor or pharmacist about herbal products, vitamins and supplements as well as prescription and pharmacy medicines.
How to choose the right next guide
If you know exactly what you took, check the medicine name and active ingredient on the packaging and use the most specific medicine guide available.
If several products are involved, it is usually more useful to ask a pharmacist to review the combination rather than trying to decide from individual side-effect lists which product is responsible.
A symptom beginning after a new medicine, a treatment change or the addition of another sedating product is useful information to record, but timing alone does not prove that the medicine caused it.
Red flags: when this symptom may need urgent medical attention
Ordinary morning sleepiness is different from being dangerously sedated or developing another serious reaction.
Seek urgent medical help if drowsiness occurs with symptoms such as:
- difficulty breathing, very slow or shallow breathing
- swelling of the face, lips, tongue or throat
- a severe or rapidly spreading rash
- fainting, collapse or inability to wake normally
- seizures
- severe confusion or markedly unusual behaviour
- chest pain
- severe bleeding
- suicidal thoughts or an immediate risk of self-harm
- suspected overdose
- symptoms that are severe or rapidly worsening.
Severe drowsiness, difficulty waking, breathing problems, confusion and loss of consciousness can occur in an overdose of some sleeping medicines and require urgent assessment.
Certain prescription insomnia medicines have also been associated with rare but serious complex sleep behaviours, such as sleepwalking, preparing food or driving while not fully awake. These events can result in serious injury.
Do not drive yourself for emergency care if you are significantly drowsy, confused, dizzy or otherwise impaired.
Possible medicine categories
Serious symptoms should not be dismissed simply because drowsiness is an expected effect of a sleeping medicine.
They may involve the sleeping tablet itself, another medicine taken at the same time, an interaction, excessive exposure, an allergic reaction or a different medical problem entirely.
A healthcare professional needs the complete picture to assess this safely.
Timing clues
Timing can help healthcare professionals understand what happened. Important details include:
- when you took the sleeping tablet
- when you went to sleep
- approximately how long you slept
- when you first noticed the next-day symptoms
- whether symptoms improved as the morning or day progressed
- whether the same problem has happened on previous nights
- whether another medicine, supplement or substance was used around the same time.
Timing is a clue rather than a diagnosis.
What to track before speaking to a doctor or pharmacist
A short record can make a conversation with your pharmacist or doctor much more useful.
Write down:
- the exact name of the sleeping tablet
- the active ingredient, if shown on the packaging
- the strength listed on the label
- when you took it
- when you went to bed and woke up
- how many hours you believe you slept
- what the next-day symptoms felt like
- when those symptoms started and stopped
- whether you felt safe to walk, work, drive or concentrate
- any falls, memory gaps or unusual behaviour
- all other prescription and non-prescription medicines you use
- vitamins, herbal remedies and supplements
- any alcohol or other substances used around the same period
- whether the symptoms are new, recurring or worsening.
Do not intentionally repeat an unsafe situation simply to see whether the symptom happens again.
Reading the patient information leaflet can also help you identify whether drowsiness, driving impairment or interactions are listed for your particular product.
Red-flag symptoms
Record serious or unusual symptoms if you can do so safely, but do not delay emergency care to complete a symptom diary.
Trouble breathing, severe swelling, collapse, seizures, severe allergic symptoms, suspected overdose, suicidal thoughts or severe and rapidly worsening symptoms need immediate attention.
When to contact a doctor, pharmacist, or emergency service
A pharmacist can be particularly helpful when you want to check whether next-day drowsiness is a recognised effect of your medicine or whether other products you use could be increasing sedation.
Contact the prescribing doctor or other appropriate healthcare professional if the drowsiness keeps happening, is worsening, interferes with work or everyday functioning, causes falls, or leaves you unable to perform activities safely.
Use an emergency service or emergency department for severe symptoms, suspected overdose, breathing difficulty, collapse, seizures, serious allergic reactions, suicidal thoughts or another rapidly worsening reaction.
What not to do without medical advice
Next-day drowsiness can be frustrating, particularly when it interferes with driving, commuting, work or looking after other people. However, trying to solve the problem by changing treatment yourself can introduce additional risks.
Do not independently:
- increase or decrease a prescribed dose
- take extra tablets because you did not fall asleep quickly
- double a dose after forgetting one
- stop a regularly used prescription medicine suddenly without appropriate advice
- add a second sleeping medicine to overcome poor sleep
- switch from a prescription sleeping tablet to an over-the-counter sleep aid simply because it appears “milder”
- combine sedating medicines or supplements without checking whether they can be used together.
For some sleep medicines, suddenly changing treatment after ongoing use can cause problems such as rebound insomnia or withdrawal symptoms. The safest approach depends on the particular medicine and how it has been used, so treatment changes should be discussed with an appropriate healthcare professional.
Possible medicine categories
The safest response may differ depending on whether the product is a prescription hypnotic, an over-the-counter sleep aid, another sedating medicine or a complementary product.
That is why the medicine name matters. Take the packaging or a clear list of your medicines to your pharmacist or doctor when asking for advice.
Timing clues
Next-day drowsiness can be more important from a safety perspective when you need to drive, operate equipment, work at height, make safety-critical decisions or perform other tasks requiring fast reactions and concentration.
Some insomnia medicines can impair these activities the following morning. A person may also underestimate impairment because feeling awake does not necessarily mean reaction time and alertness have fully returned to normal.
If you feel sleepy, dizzy, dazed, uncoordinated or unable to concentrate, avoid driving or operating machinery until you are fully alert and follow the instructions provided for your specific medicine.
Related side-effect guides and reporting options in South Africa
If you are researching sleeping tablets next day drowsiness because something changed after starting or using a medicine, the most useful next step is to narrow the question without making treatment decisions from search results alone.
You can:
- use the sleeping tablet side effects guide for broader sleep-medicine safety information
- explore the Mental Health Medication Side Effects hub for related medicine guides
- browse the side effect symptoms A-Z if another symptom is more prominent
- use the main medication side effects library for broader medicine-safety information
- speak to a South African pharmacist or doctor about your specific medicine and circumstances.
If you suspect that a medicine caused an adverse reaction, you can also learn how to report side effects in South Africa.
SAHPRA states that both consumers and healthcare professionals can report suspected adverse events associated with health products. Reports contribute to ongoing medicine-safety monitoring and do not require you to prove that the medicine definitely caused the reaction.
What information to record
For a suspected adverse reaction, useful information includes:
- the medicine or product involved
- the product or trade name where available
- what happened
- when the reaction occurred
- relevant information about the person experiencing it
- other medicines or products being used
- contact information for the person submitting the report.
SAHPRA encourages reporters to provide as much relevant information as possible and provides an electronic reporting route as well as an adverse drug reaction reporting form.
Where reporting fits into medicine safety
Reporting a suspected side effect helps medicine-safety monitoring, but it is not a substitute for medical treatment.
If the problem is mild but persistent, discuss it with your pharmacist or doctor.
If it affects your ability to drive, work safely or function normally, seek professional advice rather than trying to alter your treatment yourself.
If you develop trouble breathing, swelling of the face or throat, severe rash, fainting, seizures, severe confusion, suicidal thoughts, suspected overdose or another severe or rapidly worsening reaction, seek urgent medical help.
Frequently asked questions
Is next-day drowsiness a common side effect of sleeping tablets?
It can be. The likelihood depends on the particular medicine. For example, feeling sleepy or tired the next day is a recognised common side effect of zolpidem, and zopiclone can cause next-day tiredness, sleepiness, dazed feelings or reduced alertness.
Other sleep medicines and over-the-counter sleep aids may also cause next-morning impairment.
How long can sleeping tablet drowsiness last?
There is no single time period that applies to every medicine or every person. The effects may improve as the medicine leaves the body, but duration varies according to the product and individual circumstances.
If you remain drowsy, dizzy or mentally impaired, do not assume that it is safe to drive simply because several hours have passed. Follow the patient leaflet for your particular medicine and speak to a pharmacist or doctor if the effect lasts longer than expected or repeatedly interferes with your day.
Should I stop my sleeping medicine if I feel drowsy the next day?
Do not make your own changes to a prescribed medicine simply on the basis of an online side-effect guide.
Contact your pharmacist or prescribing healthcare professional and explain exactly what you are experiencing. They can consider the particular medicine, how it is being used, other treatments and your individual circumstances before advising you.
Seek urgent medical help instead if you have severe sedation, breathing problems, collapse, seizures, a serious allergic reaction, suspected overdose or another emergency symptom.
When should I seek help?
Speak to a pharmacist or doctor when morning drowsiness is persistent, worsening, causing falls, interfering with normal activities or making it difficult to work or travel safely.
Seek urgent medical attention for breathing difficulty, swelling of the face or throat, severe rash, fainting, seizures, severe confusion, suicidal thoughts, suspected overdose, inability to wake normally or rapidly worsening symptoms.
What are the most important things to know about sleeping tablets next day drowsiness?
Sleeping tablets can cause next-day sleepiness and impaired alertness. The effect varies between medicines and between people.
If you feel impaired, do not drive or operate machinery. Check the medicine leaflet, record what you took and when, and include any other medicines, supplements or substances when speaking to a healthcare professional.
Do not change a prescribed dose, add another sleeping product or stop ongoing treatment without appropriate advice.
For serious symptoms or suspected overdose, seek urgent medical help. For ongoing or troublesome next-day drowsiness, speak to a doctor or pharmacist about the safest next step.