SUPERDRUG SLEEP AID 25MG TABLETS
Active substance(s): DIPHENHYDRAMINE HYDROCHLORIDE
PATIENT INFORMATION LEAFLET
Read this leaflet carefully because it contains
important information for you.
• Keep this leaflet. You may need to read it again.
• Ask your pharmacist if you need more
information or advice.
• You must contact a doctor if your symptoms
worsen or do not improve.
IN THIS LEAFLET:
1. What this medicine is for
2. Before you take the medicine
3. How to take the medicine
4. Possible side effects
5. Storing the medicine
6. Further information
WHAT THIS MEDICINE IS FOR
Asda Sleep Aid Tablets contains diphenhydramine
hydrochloride which belongs to a group of medicines
called sedating antihistamines, which help you to
sleep. These tablets are for short term use to help
BEFORE YOU TAKE THE MEDICINE
Do not take Asda Sleep Aid Tablets if you:
• are allergic to diphenhydramine or any of the
other ingredients in the tablets (listed in Section 6).
• have asthma
• have a stomach ulcer, or obstruction of the gut
• suffer from narrow angle glaucoma (increased
pressure in the eye)
• have an enlarged prostate or urinary retention
• suffer from porphyria (a rare inherited blood
• are pregnant or breastfeeding.
Talk to your doctor or pharmacist before taking
Asda Sleep Aid Tablets if you:
• have liver or kidney disease
• have bronchitis or chronic obstructive pulmonary
• have other types of glaucoma (see above)
• have difficulty in passing urine
• have myasthenia gravis (a muscle dysfunction)
• suffer from fits (e.g. epilepsy)
• have a condition called tinnitus, which causes
ringing in the ears – the medicine may make
your tinnitus worse.
Taking other medicines:
This medicine may not be suitable if you are taking
certain other medicines. Talk to your doctor or
pharmacist before taking Asda Sleep Aid Tablets
if you are taking any of the following:
• monoamine oxidase inhibitors (for depression),
or if you have taken them in the last 14 days
• other medicines used to treat depression or
anxiety (for example sedatives, hypnotics,
tranquillizers, tricyclic antidepressants)
• other antihistamines (these medicines are often
used to relieve allergies or hayfever)
• medicines called Beta-blockers (usually for
• any other medicines.
If you are unsure about any medicines you are
taking please consult your pharmacist or doctor.
Pregnancy and breastfeeding:
Do not take the tablets if you are pregnant or
Taking this medicine with food and drink
Avoid drinking alcohol while taking these tablets.
Driving and using machines
This product causes drowsiness soon after taking,
so you should not drive or operate machinery for
at least 8 hours after taking a tablet.
Important information about some of the
ingredients of this medicine:
The tablets contain lactose. If you have been told
by your doctor that you have an intolerance to
some sugars, contact your doctor before taking
this medicinal product.
HOW TO TAKE THE MEDICINE
Dose and how often to take
Take TWO tablets 20 minutes
before going to bed. Swallow
the tablets with a glass of water.
Don’t take a third tablet in the
Do not give to children under 16 years.
Not to be used by the elderly with confusion.
Remember: the tablets are for short term use
only. If you continue to have sleeping problems
consult your doctor. Do not take the tablets
continuously as they may become less effective.
DO NOT EXCEED THE STATED DOSE
If you or anyone takes too much: An overdose
is dangerous. Talk to a doctor straight away, or
contact your nearest hospital casualty department
if you take more than the stated dose. Take the
carton and this leaflet with you.
Further information overleaf ➥
POSSIBLE SIDE EFFECTS
Most people take these tablets without any
problems, but they can have side effects, like all
medicines. Side effects are more likely to occur in
Serious side effects
Stop taking the tablets and go to your doctor
or casualty department IMMEDIATELY if:
• you get any swelling of the face, lips, tongue or
• you have any difficulty swallowing or breathing
• you get any skin rash.
The above symptoms may mean you are having a
severe allergic reaction to this medicine.
Other side effects that may occur are listed below.
If you experience any of these symptoms, you feel
unwell or notice any unusual effects while taking
these tablets talk to your doctor or pharmacist.
• Muscle movements which are unintentional or
hard to coordinate
• Stomach problems and discomfort, vomiting
• Low blood pressure; fast, slow or irregular
• Confusion, depression
• Liver problems
• Sleep disturbances, tremors, seizures (fits),
• Muscle pain and stiffness, pins and needles,
muscle twitching, unsteadiness
• Urinary retention and difficulty passing urine
• Urticaria (hives)
• Reduced sense of touch or sensation
• Restlessness, excitability and reduced attention
• Increased energy
• Thicker bronchial mucus
STORING THE MEDICINE
Do not store above 25°C.
Store in the original package. Keep container in
Do not use after the expiry date printed on the carton
and blister foil.
Keep out of the sight and reach of children.
What is in this medicine:
The active ingredient is: Diphenhydramine
hydrochloride 25mg in each tablet.
Other ingredients are: Lactose, maize starch and
What this medicine looks like and contents of
The tablets are white and marked with "D" on one
side and plain on the other.
The tablets are available in packs containing 6, 8,
10, 12, 16 or 20 tablets (not all pack sizes may be
Marketing Authorisation Holder:
Galpharm Healthcare Ltd., Wrafton, Braunton,
Devon, EX33 2DL, United Kingdom.
Galpharm International Ltd., Elmhirst Park,
Middle Field Road, Barnsley, South Yorkshire,
S75 4LS, United Kingdom.
Text revised: October 2015.
The following side effects are mild and wear off
about 8 hours after taking the medicine:
• Blurred vision, dizziness, drowsiness, feeling
• Dry mouth
• Nausea (feeling sick)
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.
By reporting side effects you can help provide
more information on the safety of this medicine.