Consumer Medicine Information (CMI) summary
The
full CMI on the next page has more details. If you are worried about using this medicine,
speak to your doctor or pharmacist.
1. Why am I using MersynoNight Night Time Pain Relief?
MersynoNight Night Time Pain Relief contains the active ingredients paracetamol and
diphenhydramine hydrochloride. MersynoNight Night Time Pain Relief is used to give
temporary relief of pain when associated with sleeping difficulty.
For more information, see Section 1. Why am I using MersynoNight Night Time Pain Relief?
in the full CMI.
2. What should I know before I use MersynoNight Night Time Pain Relief?
Do not use if you have ever had an allergic reaction to paracetamol, diphenhydramine
hydrochloride or any of the ingredients listed at the end of the CMI.
Talk to your doctor or pharmacist if you have any other medical conditions, take any
other medicines, or are pregnant or plan to become pregnant or are breastfeeding.
3. What if I am taking other medicines?
Some medicines may interfere with MersynoNight Night Time Pain Relief and affect how
it works.
4. How do I use MersynoNight Night Time Pain Relief?
Take 1- 2 tablets with water or other fluid only at bedtime. Maximum of two tablets
in 24 hours. Do not exceed the stated dose.
Allow at least four hours between taking any paracetamol containing product and MersynoNight
Night Time Pain Relief tablets.
5. What should I know while using MersynoNight Night Time Pain Relief?
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Things you should do
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Remind any doctor, dentist or pharmacist you visit that you are using MersynoNight
Night Time Pain Relief. Use only as recommended.
Talk to your pharmacist or doctor if your symptoms do not improve.
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Things you should not do
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Do not give to children under 12 years of age. Do not take for more than a few days
at a time unless your doctor tells you to.
Do not exceed the recommended dose. There have been case reports of abuse with diphenhydramine.
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Driving or using machines
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This medicine may cause sleepiness in some people. If this happens, do not drive or
operate machinery.
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Drinking alcohol
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Do not drink alcohol while taking MersynoNight Night Time Pain Relief. The sedation
effects of alcohol may be increased.
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Looking after your medicine
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Keep your medicine in a cool dry place where the temperature stays below 25°C. Protect
from moisture.
Keep it where children cannot reach it.
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6. Are there any side effects?
Tell your doctor or pharmacist if you notice any of the following and they worry you:
nausea or dyspepsia; drowsiness or sleepiness; dry mouth, nose and throat; constipation;
nervousness and irritability; anxiety; hallucinations; twitching or jerking muscles;
fast heart beat; tiredness; dizziness; difficulty concentrating; unsteadiness.
The above list includes the more common side effects of your medicine. They are usually
mild.
Active ingredients:
paracetamol and diphenhydramine hydrochloride
Full Consumer Medicine Information (CMI)
This leaflet provides important information about using MersynoNight Night Time Pain
Relief. You should also speak to your doctor or pharmacist if you would like further information
or if you have any concerns or questions about using MersynoNight Night Time Pain
Relief.
Where to find information in this leaflet:
1. Why am I using MersynoNight Night Time Pain Relief?
MersynoNight Night Time Pain Relief contains the active ingredient paracetamol and
diphenhydramine hydrochloride.
Paracetamol is an analgesic. It works to stop the pain messages from getting through
to the brain. It also acts in the brain to reduce fever.
Diphenhydramine hydrochloride is an antihistamine that helps you sleep.
MersynoNight Night Time Pain Relief is used to give temporary relief of pain when
associated with sleeping difficulty.
It is useful for headache, migraine, backache, arthritis, rheumatic and muscle pain,
neuralgia, toothache or period pain.
2. What should I know before I use MersynoNight Night Time Pain Relief?
Warnings
Do not use MersynoNight Night Time Pain Relief if:
you are allergic to paracetamol, diphenhydramine hydrochloride, or any of the ingredients
listed at the end of this leaflet
Always check the ingredients to make sure you can use this medicine
you have liver failure
you have glaucoma (high pressure in the eyes)
you have stomach or duodenal ulcer or other stomach problems
you have bladder problems
you are breastfeeding or plan to breastfeed. It passes into the breast milk and there
is a possibility that the baby may be affected.
you are taking monoamine oxidase inhibitors (MAOIs), a type of medicine used to treat
depression
you have taken other medicine containing paracetamol in the last 4 hours
Use this medicine only as recommended. Do not exceed the recommended dose. There have
been reports of abuse with diphenhydramine.
Do not take this medicine after the expiry date (EXP) printed on the pack.
If you take it after the expiry has passed, it may not work as well.
Do not take this medicine if the packaging is torn or shows signs of tampering.
If it has expired or is damaged, return it to your pharmacist for disposal.
If you are not sure whether you should start taking this medicine, talk to your doctor.
Check with your doctor or pharmacist if you:
have kidney or liver disease (such as Gilbert Syndrome)
have epilepsy
glaucoma
have myasthenia gravis (a muscle dysfunction)
have prostate gland enlargement or difficulty urinating
have asthma
have bronchitis or chronic lung disease
are underweight or malnourished
regularly drink alcohol; you may need to avoid using this product altogether or limit
the amount of paracetamol you take
have a severe infection as this may increase the risk of metabolic acidosis. Signs
of metabolic acidosis include deep rapid difficult breathing, nausea or vomiting,
and loss of appetite. Contact a doctor immediately if you get a combination of these
symptoms.
have an enzyme deficiency, glucose-6-phosphate dehydrogenase
have had previous breathing problems with aspirin or non-steroidal anti-inflammatories
are taking sedatives
are taking a type of medicine used to treat depression like monoamine oxidase inhibitors
(MAOIs), or within two weeks of stopping an MAOI.
During treatment, you may be at risk of developing certain side effects. It is important
you understand these risks and how to monitor for them. See additional information
under Section
6. Are there any side effects?
Pregnancy and breastfeeding
Check with your doctor or pharmacist if you are pregnant or intend to become pregnant.
Your pharmacist or doctor will discuss the benefits and possible risks of taking the
medicine during pregnancy.
Do not take if you are breastfeeding or plan to breastfeed. It passes into the breast milk and there is a possibility that the baby may be affected.
Talk to your doctor or pharmacist if you are breastfeeding or intend to breastfeed.
Infants and children
Do not give MersynoNight Night Time Pain Relief to:
newborn or premature babies
children under 12 years of age.
Elderly
Elderly patients are more likely to have side effects from taking this medicine. Carers
should be aware that this medicine should not be given to elderly patients with confusion
and agitation (shaking movements of the body).
3. What if I am taking other medicines?
Tell your doctor or pharmacist if you are taking any other medicines, including any
medicines, vitamins or supplements that you buy without a prescription from your pharmacy,
supermarket or health food shop.
This medicine contains paracetamol. If you are taking any other medicine containing
paracetamol, do not take more than 4000 mg paracetamol (including this medicine) in
any 24 hour period.
This medicine contains diphenhydramine an antihistamine. Do not take this medicine
if you are taking other medicines containing diphenhydramine or antihistamines such
as those to treat cough and colds, allergies and skin rashes (including those you
use on your skin).
Talk to your doctor or pharmacist if you are unsure.
Some medicines and MersynoNight Night Time Pain Relief may interfere with each other.
These include:
warfarin, a medicine used to prevent blood clots
metoclopramide and domperidone, medicines used to treat nausea and vomiting
propantheline, a medicine used to reduce stomach acid and treat stomach cramps
medicines used to treat epilepsy or fits
chloramphenicol, an antibiotic used to treat ear and eye infections
flucloxacillin and rifampicin, medicines used to treat infections
alcohol
probenecid, a medicine used to treat gout or sometimes given with an antibiotic
cholestyramine, a medicine used to treat bile problems or high cholesterol levels
in the blood
metoprolol, a medicine used to treat high blood pressure
medicines used to control electrolytes levels in kidney disease
medicines used to treat depression, especially monoamine oxidase inhibitors, tricyclic
antidepressants and venlafaxine
medicines used to help you sleep or relax such as sedatives and hypnotics
opioid analgesics, medicines used to treat pain
other medicines containing antihistamines such as those to treat cough and colds,
allergies and skin rashes
medicines which make you drowsy or give you a dry mouth (sometimes called anticholinergics).
Taking such medicines while you are taking this medicine may increase the chances
of side effects.
Taking such medicines while you are taking this medicine may increase the chances
of side effects.
These medicines may be affected by MersynoNight Night Time Pain Relief or may affect
how well it works. You may need different amounts of your medicines, or you may need
to take different medicines, or separate the doses.
Check with your doctor or pharmacist if you are not sure about what medicines, vitamins
or supplements you are taking and if these affect MersynoNight Night Time Pain Relief.
4. How do I use MersynoNight Night Time Pain Relief?
How much to take
Take one or two tablets with water or other fluid
Follow the instructions provided with the medicine
Use this medicine only as recommended. Do not exceed the recommended dosage.
If you are over 65 years of age, talk to your pharmacist or doctor about how much
to use
When to take MersynoNight Night Time Pain Relief
MersynoNight Night Time Pain Relief should be taken at bedtime
How long to use it for
Adults should not take this medicine for more than a few days at a time unless your
doctor tells you to take it for longer.
Children aged 12 to 17 years should not take this medicine for more than 48 hours
unless on the advice of a doctor
If you forget to use MersynoNight Night Time Pain Relief
If you forget to take MersynoNight Night Time Pain Relief at bedtime, you may take
it through the night.
Do not take a second dose
If you use too much MersynoNight Night Time Pain Relief
If you think that you have used too much MersynoNight Night Time Pain Relief, you
may need urgent medical attention.
You should immediately:
phone the Poisons Information Centre
(by calling 13 11 26), or
contact your doctor, or
go to the Emergency Department at your nearest hospital.
You should do this even if there are no signs of discomfort or poisoning.
5. What should I know while using MersynoNight Night Time Pain Relief?
Things you should do
Call your doctor immediately or go to Accident and Emergency at your nearest hospital
if you have any of the following symptoms which may be due to an allergic reaction:
shortness of breath
wheezing or difficulty breathing
swelling of the face, lips, tongue or other parts of the body
rash, itching or hives on the skin.
If you develop a skin rash while taking this medicine you must stop taking it immediately
and seek medical advice.
Remind any doctor, dentist or pharmacist you visit that you are using MersynoNight
Night Time Pain Relief.
Talk to your pharmacist or doctor if your symptoms do not improve.
Your pharmacist or doctor will assess your condition and decide if you should continue
to take the medicine.
Things you should not do
Do not use this medicine to treat any other complaints unless your pharmacist or doctor
tells you to
Children 12 to 17 years:
Do not give paracetamol for more than 48 hours unless a doctor has told you to.
Adults:
Do not take for more than a few days at a time unless your doctor tells you to
Things to be careful of
Use this medicine only as recommended. Do not exceed the recommended dose.
There have been case reports of abuse with diphenhydramine. This medicine may be habit
forming, especially if you have had addiction problems in the past or if you have
severe mental health problems.
Driving or using machines
Be careful before you drive or use any machines or tools until you know how MersynoNight
Night Time Pain Relief affects you.
This medicine may cause sleepiness, dizziness, drowsiness, difficulty concentrating
or blurred vision in some people.
If this happens, do not drive or operate machinery.
Drinking alcohol
Tell your doctor or pharmacist if you drink alcohol.
Do not drink alcohol while taking MersynoNight Night Time Pain Relief. Alcohol may
increase the sedative effects of alcohol.
Looking after your medicine
Store below 25°C. Protect from moisture.
Keep your medicine in the original pack until it is time to take it. If you keep the
tablets out of their packaging, they may not keep well.
Follow the instructions in the carton on how to take care of your medicine properly.
Store it in a cool dry place away from moisture, heat or sunlight; for example, do
not store it:
in the bathroom or near a sink, or
in the car or on window sills
Keep it where children cannot reach it.
Getting rid of any unwanted medicine
If you no longer need to use this medicine or it is out of date, take it to any pharmacy
for safe disposal.
Do not use this medicine after the expiry date.
6. Are there any side effects?
All medicines can have side effects. If you do experience any side effects, most of
them are minor and temporary. However, some side effects may need medical attention.
See the information below and, if you need to, ask your doctor or pharmacist if you
have any further questions.
Less serious side effects
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Less serious side effects
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What to do
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Gastrointestinal related:
nausea or indigestion
constipation
Head and neurology related:
dry mouth, nose and throat
drowsiness, sleepiness, tiredness
nervousness, irritability or agitation
anxiety
hallucinations
dizziness
difficulty concentrating
headache
confusion
Heart related:
fast or irregular heart beat
Muscle and movement related:
twitching or jerking muscles
unsteadiness
tingling or numbness of the hands or feet
Eyes related:
blurred vision.
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Speak to your doctor or pharmacist if you have any of these less serious side effects
and they worry you.
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Serious side effects
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Serious side effects
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What to do
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Allergy related:
shortness of breath
wheezing or difficulty breathing
swelling of the face, lips, tongue or other parts of the body
previous breathing problems with aspirin or non-steroidal anti-inflammatories, and
you experience a similar reaction with this product
rash, itching or hives on the skin
Skin related:
severe blisters and bleeding in the lips, eyes, mouth, nose and genitals
painful red areas with blisters and peeling layers of skin which may be accompanied
by fever and/or chills
yellowing of the skin and eyes
Infection related:
frequent infections such as fever, severe chills, sore throat or mouth ulcers
Bleeding related:
unexplained bruising or bleeding
Neurological system related:
seizures (fits)
Gastrointestinal related:
nausea, vomiting
Urinary related:
difficult or painful urination
dark coloured urine
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Call your doctor straight away, or go straight to the Emergency Department at your
nearest hospital if you notice any of these serious side effects.
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Tell your doctor or pharmacist if you notice anything else that may be making you
feel unwell.
Other side effects not listed here may occur in some people.
Reporting side effects
After you have received medical advice for any side effects you experience, you can
report side effects to the Therapeutic Goods Administration online at
www.tga.gov.au/reporting-problems . By reporting side effects, you can help provide more information on the safety of
this medicine.
7. Product details
This medicine is available over-the-counter without a doctor's prescription although
is only available from your pharmacist.
What MersynoNight Night Time Pain Relief contains
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Active ingredient
(main ingredient)
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Each tablet contains 500 mg paracetamol and 25 mg diphenhydramine hydrochloride
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Other ingredients
(inactive ingredients)
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Maize starch
Potassium sorbate
Povidone
Croscarmellose sodium
Purified talc
Stearic acid
Opadry complete film coating system 03F505035 Blue
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Do not take this medicine if you are allergic to any of these ingredients.
What MersynoNight Night Time Pain Relief looks like
MersynoNight Night Time Pain Relief is a blue, capsule shaped, film coated tablet
debossed with “PD5” on one side and plain on the other side.
(AUST R 301428).
Who distributes MersynoNight Night Time Pain Relief
Sanofi Consumer Healthcare
87 Yarraman Place Virgina QLD 4014
Australia
This leaflet was revised in September 2021.
™ = Trademark
mersynonight-ccdsv03gluv2-cmiv3-29sept21