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The product code(s) for this leaflet is: PL 39307/0074.
Zacco 5mg/5ml and 10mg/5ml Oral Suspension
Zacco 5mg/5ml Oral Suspension
Zacco 10mg/5ml Oral Suspension
clobazam
This medicine contains Clobazam, which can cause dependence, tolerance and addiction. You can get withdrawal symptoms if you stop taking it or reduce the dose suddenly. If this medicine is being used for the treatment of epilepsy you must continue to take this medicine as instructed by your doctor.
The name of your medicine is Zacco 5mg/5ml or 10mg/5ml Oral Suspension but will be referred to as Zacco throughout this leaflet.
1. What Zacco is and what it is used for
2. What you need to know before you take Zacco
3. How to take Zacco
4. Possible side effects
5. How to store Zacco
6. Contents of the pack and other information
This medicine contains the active substance clobazam which belongs to a group of medicines called benzodiazepines.
It works by having a calming effect on the brain.
This medicine has been Zacco to you and should not be given to anyone else.
Benzodiazepines can cause dependence, tolerance and addiction, and you may get withdrawal symptoms if you stop taking it or reduce the dose suddenly. Your prescriber should have explained how long you will be taking it for and, when it is appropriate to stop, how to do this safely. When your treatment is stopped, it is usually done gradually over a period which is specific to you and may occur over a period of weeks to months. If this medicine is being used for the treatment of epilepsy you must continue to take it as prescribed by your doctor.
You must talk to a doctor if you do not feel better or if you feel worse.
Do not take if any of the above apply to you. If you are not sure, talk to your doctor or pharmacist before taking Zacco. Use of Zacco may lead to a physical addiction. Stopping Zacco suddenly may lead to side effects. Dependence on Zacco may occur. Extended use of Zacco, will lessen the effect it has on your symptoms.
Note: Make sure that you receive the same clobazam medicine every time you collect your prescription unless your doctor has agreed to change to a different clobazam medicine. If the appearance of this medicine is not the same as usual or if the dosage instructions have changed, speak to your doctor or pharmacist as soon as possible to make sure you have the right medicine.
Talk to your doctor or pharmacist before taking Zacco if:
Taking this medicine regularly, particularly for a long time, can lead to physical dependence and addiction. Your prescriber should have explained how long you will be taking it for and, when it is appropriate to stop, how to do this safely. When your treatment is stopped, it is usually done gradually over a period which is specific to you and may occur over a period of weeks to months.
Physical dependence and addiction can cause withdrawal symptoms when you stop taking this medicine. Withdrawal symptoms can include:
Headaches, muscle pain, anxiety, tension, depression, restlessness, sweating, confusion or irritability. Do not stop taking your medication suddenly. This could lead to more serious symptoms such as loss of the sense of reality, feeling unreal or detached from life, and unable to feel emotion. Some patients have also experienced numbness or tingling of the arms or legs, tinnitus (ringing sounds in the ears), oversensitivity to light, sound and touch, uncontrolled or overactive movements, twitching, shaking, feeling sick, being sick, stomach upsets or stomach pain, loss of appetite, agitation, abnormally fast heartbeats, panic attacks, dizziness or feeling that you are about to fall, memory loss, hallucinations, feeling stiff and unable to move easily, feeling very warm, convulsions (sudden uncontrolled shaking or jerking of the body).
If you are not sure if any of the above apply to you, talk to your doctor or pharmacist before taking Zacco.
Your prescriber will discuss with you how to gradually reduce your dose before stopping the medicine. It is important that you do not stop taking the medicine suddenly as you will be more likely to experience withdrawal symptoms. Your prescriber will ensure that your plan for stopping treatment is tailored to you and can be adapted according to your needs and experience of any withdrawal symptoms.
Clobazam should only be used by those they are prescribed for. Do not give your medicine to anyone else. Taking higher doses or more frequent doses of Clobazam may increase the risk of addiction. Overuse and misuse can lead to overdose and/or death.
Suicidal thoughts
Tell your doctor straight away if you start thinking about suicide or harming yourself. Some patients have had suicidal thoughts while taking medicines containing clobazam, especially if they were also depressed.
Psychotic or ‘Paradoxical’ reactions
It is known that with the use of clobazam restlessness, agitation, irritability, aggression, delusions, rage, nightmares, hallucinations, deceptive thoughts (psychosis), inappropriate behaviour and other adverse behavioural effects may occur. If this happens you should stop taking Zacco and contact your doctor. These reactions are more common in children and elderly patients.
Dependence, withdrawal and tolerance
You may become dependent on Zacco if you take it for a long period of time or with high dose, particularly if you have a history of heavy alcohol or drug use. This means that you may feel that you need to continue treatment with Zacco in order to feel well (known as psychological dependence). You should therefore take Zacco for as short time as possible.
If you suddenly stop taking Zacco you may experience worsening of the symptoms you were originally being treated for, as well as mood changes, anxiety, sleep disturbance, headache, increased dreaming, tension, confusion, excitability, hallucinations, muscle pain, numbness of the limb, tingling, sweating, tremor, nausea, sensitivity to light, increased sensitivity to sound, sensitivity to light or restlessness.
This is known as withdrawal symptoms and can be avoided by slowly reducing your dose. If you are worried about dependence or withdrawal please talk to your doctor.
If you take Zacco for a long period of time for treatment of epilepsy it is possible that you may become tolerant to it, meaning that it will not be as effective as it was when you first started taking it. If you feel that Zacco is no longer helping to control your symptoms please talk to your doctor, they may suggest you take a short break from this medicine.
Breathing difficulties
Zacco may cause respiratory depression, particularly when administered at high doses. Tell your doctor if you have respiratory failure, your doctor will decide whether to reduce the dose. In case of severe respiratory disturbance, clobazam may not be used.
Serious skin problems
There have been very rare reports of potentially life-threatening skin rashes (Stevens-Johnson Syndrome, Toxic Epidermal Necrolysis) with the use of Zacco. Symptoms of which may include: flu-like symptoms followed by a painful red or purplish rash that spreads and blisters. If you develop any of the above you must stop taking this medicine and inform your doctor straight away (see Section 4).
Children
Zacco should only be used in children from 1 month to 2 years old, under exceptional situations, where there is a clear epilepsy indication.
Tell your doctor or pharmacist if you are taking or have recently taken or might take any other medicines. This includes medicines you buy without a prescription, including herbal medicines. This is because Zacco can affect the way some other medicines work. Also some medicines can affect the way Zacco works.
In particular, tell your doctor if you are taking any of the following:
Concomitant use of Zacco and opioids (strong pain killers, 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 Zacco together with opioids the dose 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 dose recommendation closely. It could be helpful to inform friends or relatives to be aware of the signs and symptoms stated above. Contact your doctor when experiencing such symptoms.
If you are not sure if any of the above apply to you talk to your doctor or pharmacist.
If you are going to have an anaesthetic, tell your doctor or anaesthetist that you are taking Zacco. This is because your doctor may need to change the amount of anaesthetic or muscle relaxants to give you.
Do not drink alcohol while taking Zacco. This is because there is an increased risk of sleepiness and other side effects.
Do not take Zacco if you are breast-feeding as it may pass into the mother’s milk.
Pregnancy
Use of this medicine is not recommended during pregnancy and in women of childbearing potential not using contraception.
If you are pregnant or breast-feeding, think you may be pregnant, ask your doctor or pharmacist for advice before taking this medicine. Do not stop taking Zacco without talking to your doctor.
A large amount of data has not shown evidence of malformations associated with the use of benzodiazepines. However, some studies have shown a potentially increased risk of cleft lip and palate in newborn babies compared to that in the general population. Use of this medicine is not recommended during pregnancy.
Cleft lip and palate (sometimes called “harelip”) is a deformation at birth caused by incomplete fusion of the palate and upper lip.
Reduced fetal movement and fetal heart rate variability may occur after taking Zacco during the second and/or third trimester of pregnancy.
If Zacco is taken at the end of pregnancy or during childbirth, your baby may show drowsiness (sedation), muscle weakness (hypotonia or floppy infant syndrome), a drop in body temperature (hypothermia), difficulty feeding (problems suckling causing poor weight gain) and breathing problems (respiratory depression sometimes severe).
If taken regularly in late pregnancy, your baby may get withdrawal symptoms such as agitation or shaking. In this case the newborn should be closely monitored during the postnatal period.
Zacco has major influence on the ability to drive and use machines. You may feel sleepy or have concentration or memory problems after taking this medicine. You may also experience double vision or you may react more slowly to things. If this happens, do not drive or use any tools or machines.
The medicine can affect your ability to drive as it may make you sleepy or dizzy.
Talk to your doctor or pharmacist if you are not sure whether it is safe for you to drive while taking this medicine.
This medicine contains methyl parahydroxybenzoate (E218), which may cause allergic reactions (possibly delayed).
This medicine contains less than 1mmol sodium (23mg) per 5ml, that is to say essentially ‘sodium-free’.
Your prescriber should have discussed with you how long the course of Zacco will last. They will arrange a plan for stopping treatment. This will outline how to gradually reduce the dose and stop taking the medicine. Your prescriber will ensure that your plan for stopping treatment is tailored to you and can be adapted according to your needs and experience of any withdrawal symptoms.
Always take this medicine exactly as your doctor has told you. Check with your doctor or pharmacist if you are not sure.
5mg/5ml Doses:
Adults (Anxiety and Epilepsy)
Children (over 2 years) (Epilepsy)
Elderly (Anxiety and Epilepsy)
10mg/5ml Doses:
Adults (Anxiety and Epilepsy)
Children (over 2 years) (Epilepsy)
Elderly (Anxiety and Epilepsy)
Patients with hepatic or renal impairment (Anxiety and Epilepsy):
In patients with liver or kidney disease lower initial doses are required, with a gradual increase under careful observation of your doctor (see section “Warnings and precautions”).
Instructions for the use of syringe:
1. Open the bottle: press the cap down and turn it anticlockwise (Figure 1).
2. Separate the adaptor from the syringe (figure 2). Insert the adaptor into the bottle neck (figure 3). Ensure it is fixed well. Take the syringe and put it in the adaptor opening (figure 4). Turn the bottle upside down (figure 5).
3. Fill the syringe with a small amount of suspension by pulling the piston down (figure 5A), then push the piston up in order to remove any possible air bubbles (figure 5B). Pull the piston down to the graduation mark corresponding to the quantity in millilitres (ml) prescribed by your doctor (figure 5C).
4. Turn the bottle the right way up (figure 6A). Remove the syringe from the adaptor (figure 6B).
5. Put the end of the syringe into the mouth and push the plunger slowly back in to deliver the medicine into the mouth (figure 7).
6. Close the bottle with the plastic screw cap. Wash the syringe with water (figure 8) and store in a clean place.
If you take more Zacco than you should, tell your doctor or go to your nearest hospital casualty department straight away. Do not drive yourself, because you may start to feel sleepy. Remember to take the medicine pack with you. This is so that the doctor knows what you have taken.
Do not suddenly stop taking this medicine. If you want to stop taking this medicine, discuss this with your prescriber first. They will tell you how to do this, usually by reducing the dose gradually so that any unpleasant withdrawal effects are kept to a minimum. This may occur over a period of weeks to months. Your prescriber will ensure that your plan for stopping treatment is tailored to you and can be adapted according to your needs and experience of any withdrawal symptoms.
Withdrawal symptoms such as:
Headaches, muscle pain, anxiety, tension, depression, restlessness, sweating, confusion or irritability. Do not stop taking your tablets suddenly. This could lead to more serious symptoms such as loss of the sense of reality, feeling unreal or detached from life, and unable to feel emotion. Some patients have also experienced numbness or tingling of the arms or legs, tinnitus (ringing sounds in the ears), oversensitivity to light, sound and touch, uncontrolled or overactive movements, twitching, shaking, feeling sick, being sick, stomach upsets or stomach pain, loss of appetite, agitation, abnormally fast heartbeats, panic attacks, dizziness or feeling that you are about to fall, memory loss, hallucinations, feeling stiff and unable to move easily, feeling very warm, convulsions (sudden uncontrolled shaking or jerking of the body).
If you have any further questions on the use of this medicine, ask your doctor or pharmacist.
Like all medicines, this medicine can cause side effects, although not everybody gets them. You may feel ill after taking this medicine, or notice unusual or unexpected symptoms.
If this happens, tell your doctor.
Tell your doctor straight away if you get any of the side effects listed above. Your doctor may decide that your treatment needs to be stopped. These side-effects are more likely to happen in elderly people and children. Prolonged use of Zacco may lead to a dependence on the drug.
Tell your doctor or pharmacist if any of the following side effects get serious or lasts longer than a few days, or if you notice any side effects not listed in this leaflet.
Very Common:
Common:
Uncommon:
Not known:
When you stop taking Clobazam, you may experience drug withdrawal symptoms, which include:
Headaches, muscle pain, anxiety, tension, depression, restlessness, sweating, confusion or irritability. Do not stop taking your tablets suddenly. This could lead to more serious symptoms such as loss of the sense of reality, feeling unreal or detached from life, and unable to feel emotion. Some patients have also experienced numbness or tingling of the arms or legs, tinnitus (ringing sounds in the ears), oversensitivity to light, sound and touch, uncontrolled or overactive movements, twitching, shaking, feeling sick, being sick, stomach upsets or stomach pain, loss of appetite, agitation, abnormally fast heartbeats, panic attacks, dizziness or feeling that you are about to fall, memory loss, hallucinations, feeling stiff and unable to move easily, feeling very warm, convulsions (sudden uncontrolled shaking or jerking of the body).
If you notice any of the following signs whilst taking Clobazam, it could be a sign that you have become addicted.
If you notice any of these signs, it is important you talk to your prescriber.
If you get any side effects talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme Website 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.
The active substance is clobazam.
For 5mg/5ml: Each 5ml of oral suspension contains 5mg clobazam.
For 10mg/5ml: Each 5ml of oral suspension contains 10mg clobazam.
The other ingredients are methyl parahydroxybenzoate (E218), citric acid monohydrate (E330), sodium citrate (E331), sucralose (E955), xanthan gum (E415) and purified water.
Zacco is white to off-white viscous liquid supplied in an amber glass bottle with tamper-evident child resistant plastic screw cap and a 5ml polypropylene oral syringe with 0.1ml graduation mark and an adaptor for the syringe. Where higher doses are to be administered, dosing cups should be considered.
Zacco is supplied in bottles containing 100ml and 150ml suspension.
Not all pack sizes may be marketed.
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This leaflet was last revised in 11/2025.
VAR/IB-015