- diphenhydramine hydrochloride
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 can be viewed in PDF format using the link above.
The text only version may be available from RNIB in large print, Braille or audio CD. For further information call RNIB Medicine Leaflet Line on 0800 198 5000. The product code(s) for this leaflet is: PL02855/0070.
Package leaflet: Information for the user
One-a-Night 50mg Tablets
Read all of this leaflet before you start taking this medicine because it contains important information for you. Always take this medicine exactly as described in this leaflet or as your doctor or pharmacist has told you.
In this leaflet:
1.What Nytol One-A-Night is and what it is used for
2.What you need to know before you take Nytol One-A-Night
3.How to take Nytol One-A-Night
4.Possible side effects
5.How to store Nytol One-A-Night
6.Contents of the pack and other information
1. What Nytol One-A-Night is and what it is used for
Nytol One-A-Night is used to relieve temporary sleeping difficulties.
The active ingredient is diphenhydramine hydrochloride, an antihistamine that causes sleepiness or drowsiness. Temporary difficulties in getting a good night’s sleep can be caused by various problems such as stress, jet lag or personal problems such as bereavement. In sleep problems of this type, Nytol One-A-Night has been shown to help sufferers to fall asleep faster, have a longer and deeper sleep, and to wake up feeling rested in the morning.
Do not take Nytol One-A-Night for more than 2 weeks without consulting your doctor.
2. What you need to know before you take Nytol One-A-Night
Do not take Nytol One-A-Night:
Warnings and precautions
Talk to your doctor or pharmacist before taking Nytol One-A-Night:
Other medicines and Nytol One-A-Night
Talk to your doctor or pharmacist before taking these tablets if you are taking any prescribed medicines; particularly tricyclic antidepressants, monoamine oxidase inhibitors (MAOIs prescribed for depression) within the last two weeks, atropine (used to dilate pupils of the eyes) or medicines which make you drowsy. Avoid the use of other antihistamines including those used on your skin and in cold and cough medicines, while taking this medicine.
Nytol One-A-Night with food, drink and alcohol
Do not drink alcohol while using Nytol One-A-Night.
Pregnancy, breast feeding and fertility
Talk to your doctor before taking Nytol One-A-Night if you are pregnant, trying to become pregnant, or breast feeding.
Driving and using machines
Do not drive or operate machinery.
Nytol One-A-Night is intended to produce sleepiness or drowsiness soon after the dose is taken.
Nytol One-A-Night contains lactose
If you have been told by your doctor that you have an intolerance to some sugars, ask your doctor before taking this medicine.
3. How to take Nytol One-A-Night
Always take this medicine exactly as described in this leaflet or as your doctor or pharmacist has told you. Check with your doctor or pharmacist if you are not sure.
The recommended dose for adults and children aged 16 years and over: Swallow 1 tablet with water 20 minutes before you go to bed.
Not to be used by children under 16 years.
Not to be used by the elderly with confusion.
If you take more Nytol One-A-Night than you should
Contact your doctor or casualty department.
If you forget to take Nytol One-A-Night
Do not take a double dose to make up for a forgotten dose. Take the next dose at the usual time as described in this leaflet.
If you have any further questions on the use of this medicine, ask your doctor or pharmacist.
4. Possible side effects
Like all medicines, Nytol One-A-Night can have side effects, although not everybody gets them.
Common (may affect up to 1 in 10 people)
Not known (frequency cannot be estimated from the available data)
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.
5. How to store Nytol One-A-Night
Keep this medicine out of the sight and reach of children.
Do not use this medicine after the expiry date (EXP) stated on the pack.
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.
Store in a dry place.
6. Contents of the pack and other information
What Nytol One-A-Night contains
What Nytol One-A-Night looks like and contents of the pack
Packs of Nytol One-A-Night contain 4, 8, 10, 16 or 20 tablets. Not all pack sizes may be marketed.
Marketing authorisation holder is
and all enquiries should be sent to this address.
This leaflet was last revised in February 2017.