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Buy Sominex Tablets online

Sominex Tablets (16 tablets )

Order before 4pm for delivery from Fri. 20 Jul.

Description for Sominex Tablets

Sominex Tablets: If you are having temporary sleepless nights, try Sominex Tablets. They contain the active ingredient Promethazine Hydrochloride which is known to induce drowsiness and will help you go to sleep in a safe and effective manner. It should help you get 6-8 hours of quality sleep.

Product Information

  • Age: 16 years +

    Maximum per order: 2

  • Pregnancy: Not suitable

    Breastfeeding: Not suitable

Sominex Tablets: For relief of temporary sleepless nights, try Sominex Tablets. They contain the active ingredient Promethazine Hydrochloride which induces drowsiness and encourages 6-8 hours of sleep in a safe and effective manner.

Temporary insomnia is a common condition in the UK as stress and other problems often keep us awake at night. In most cases, the condition is temporary but if left untreated it can be troublesome. 

Sominex tablets contain the active ingredient promethazine, a sedating antihistamine. Promethazine causes drowsiness by effecting the brain; it decreases the time needed to fall asleep and increases deep sleep. Promethazine is helpful in the relief of temporary sleeping difficulties, for example if you have trouble falling sleep or staying asleep because of disturbances to your normal routine.

  • Take at bedtime, or up to an hour after going to bed if you are having difficulty falling asleep.
  • Take the tablets with a drink of water and either with or without food.

Sominex may cause drowsiness that can last up to 12 hours. If you are affected, do not perform potentially hazardous tasks such as driving or operating machinery. Avoid drinking alcohol while taking this medication.

This medication may interfere with some pregnancy tests, causing false negative or false positive results.

If you have scheduled any patch or skin prick tests to diagnose allergies, stop taking this medication at least 72 hours before your tests. Antihistamines can prevent or reduce the skin reactions that indicate an allergy.

Sominex tablets contain promethazine, a sedating antihistamine. Read on for advice about their use, warnings and side effects.


*Prescription medicines are supplied subject to a medical consultation at the discretion of a doctor.

Adults, the elderly and children aged 16 years and over: 

Swallow 1 tablet at bedtime or up to 1 hour after going to bed when you're unable to fall asleep. 

These should only be taken orally. 

Avoid chewing or breaking the tablets, swallow them whole with plenty of water.

Not everyone will experience side effects when they take medication, however if you do they can include:


If you are concerned about these effects, or if the product affects you in any other way, stop using it and talk to your doctor or pharmacist.

The active ingredients contained in this medicine is/are:

Promethazine Hydrochloride Ph Eur 20mg.

The medicine also contains the following inactive ingredients to make up the complete product:

Croscarmellose sodium, lactose, magnesium stearate,maize starch.

Reading the following warnings carefully will help to ensure you are selecting an appropriate product.

  • Avoid driving or operating machinery including drinking alcohol, when taking this medication. 
  • Not recommended for children under 16 years of age. 
  • Keep out of reach and sight of children. 

Please read all packaging and the Product Information Leaflet before taking any new medicine and inform your doctor of medicines you are taking or intend to take.


We offer FREE standard tracked delivery on orders over £40.

The following delivery options are available:

  • Standard Tracked Delivery - 2/3 day delivery - £2.95
  • Express Tracked Delivery - 1/2 day delivery - £4.45
  • Special Delivery (Guaranteed before 1pm) - £8.95
  • Saturday Guaranteed before 1pm - £10.45

All our orders are sent out using Royal Mail. We always aim to dispatch all orders received before 4pm the same working day. Any orders received after 4pm or over the weekend will be dispatched the next working day. Orders will not be dispatched on weekends or bank holidays.

All orders can be fully tracked in your account.

We ensure all parcels are in plain packaging for discreet delivery of your medicines and pharmacy goods.

Deliveries containing pharmacy-only or prescription medicines may require a signature on receipt. 

Delivery is free for all NHS prescriptions.

Please note: Royal Mail do not deliver on Sundays or Bank Holidays - this should be taken into account when ordering. 

If you are not home to accept your delivery, a card should be left by the Royal Mail representative. This card will provide details of where you can collect the order or how to arrange re-delivery.

Should you be unable to collect your missed delivery or arrange for your medication to be redelivered by Royal Mail, the pharmacy can resend your medication to the same, or a different address provided it has been returned to us and this happens within a 30 day window.

Once a package has been shipped with Royal Mail we advise that you are bound to the terms and conditions of their use together with the terms and conditions contained herein.

You have the right to cancel your order up to the point when your treatment is dispatched. The pharmacist must destroy any medication within 30 days of it being returned, even un-opened boxes, so we are not able to offer refunds once your treatment has been dispatched.


Forwarding houses

We are unable to ship orders to mailing or forwarding houses for onwards shipping to locations outside of the UK.


BFPO Postcodes

Unfortunately we are unable to deliver medicines to BFPO postcodes.


Remote Areas

Please be aware that Royal Mail Guaranteed services are not available to all customers in the UK, especially those that live in remote postcodes. Royal Mail advise customers of the following:

We deliver by 5.30pm the next working day in the following postcode areas:
AB30 - 39, 41 - 45, 51 - 56
GY9 Alderney (Channel Islands)
HS1, 3 - 9
IV21 - 28, 40 - 49, 51 - 56
KA27, 28
KW1 - 3, 5 - 15
KW16 Stromness Town only
PA20 (0&9)
PA28 - 38, 41 - 49, 76, 77
PH15, 17 - 26, 31 - 40, 49, 50


We deliver within two working days by 5.30pm to the following postcodes areas:
GY1 Herm (Channel Islands)
GY9 Sark (Channel Islands)
PA60 - 75, 78
ZE2, 3


We deliver within three working days by 5.30pm to the following postcode areas:
KW16 - non-Town
PH30, 41 - 44


Please note: This applies to our 'Special Delivery' and 'Saturday Guaranteed' services.



We are currently unable to ship orders outside of the UK.

We are unable to ship orders to mailing or forwarding houses for onwards shipping to locations outside of the UK.

Need to know more about Insomnia?

Visit our advice area or contact our support team

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