Periactin 4mg Tablets 30s

SKU : GCYP004030 PIP-Code : 2380566 EAN : 5060032242613
Periactin 4mg Tablets are used to treat hayfever, skin allergies and reactions to insect bites and stings. They can also be used to relieve migraines.
Out of Stock
£9.70 £0.33 per tablet
View delivery information
Questionnaire Icon This medicine can only be sold under the supervision of a Pharmacist, therefore you will need to answer a few short questions so our Pharmacist can ensure this product is suitable for you.
Information Icon This product is limited to 6 per customer


Periactin 4mg Tablets

Periactin 4mg Tablets are used to treat:
  • Skin allergies with itchiness, swelling, or red skin, eczema or nettle rash.
  • Itchiness of chicken pox and reactions to insect bites and stings.
  • Sneezing, watery eyes and blocked or runny nose caused by an allergy such as hayfever (allergic rhinitis).
  • Conjunctivitis caused by an allergy - with red, watery, inflamed eyes.
  • Migraine and other similar headaches.
These conditions cause too much histamine and serotonin to be produced in the body. Periactin 4mg Tablets contain the active ingredient cyproheptadine, an antihistamine that stops the unwanted effects of histamine and seratonin to relieve the symptoms that too much of these substances causes.  


For allergies
  • Adults and children over 14 years: Start with 1 tablet three times a day. Most patients need 3-4 tablets a day. Do not take more than 8 tablets a day.
  • Children aged 7-14 years: The usual dose is 1 tablet two or three times a day as needed. If you need to give an extra dose, give it at bedtime. Do not give more than 4 tablets a day.
  • Children aged 2-6 years: The usual dose is half a tablet two or three times a day. If you need to give an extra dose, give it at bedtime. Do not give more than 3 tablets a day.
For migraine
  • Take 1 tablet when you are getting the migraine
  • Take another one, if needed, after 30 minutes.
  • Then take 1 tablet every 4-6 hours to maintain relief.
  • Do not take more than 2 tablets in any 4-6 hour period.
Children under 2 years
  • Do not give Periactin to children under 2 years of age.


  • Active Ingredient: Anhydrous Cyproheptadine Hydrochloride 4mg.
  • Other ingredients: Calcium Hydrogen Phosphate E341, Lactose, Magnesium Stearate E572, Potato Starch, Pregelatinised Maize Starch.


  • Do not drive or use any tools or machines while taking this medicine. This is because Periactin can make you sleepy.
  • Do not drink alcohol while you are taking Periactin. This is because Periactin can make you sleepy and drinking alcohol at the same time can make you even more sleepy.
  • Periactin contains lactose, which is a type of sugar. If you have been told by your doctor that you can not tolerate or digest some sugars (have an intolerance to some sugars), talk to your doctor before taking this medicine.
Do not take Periactin 4mg Tablets if:
  • You are allergic (hypersensitive) to cyproheptadine or any of the other ingredients of Periactin.
  • You are taking a type of medicine called a monoamine oxidase inhibitor (MAOI) for depression, such as meclobemide, phenelzine, tranylcypramine, linezolid or pargyline.
  • You have a narrowing of the opening from the stomach ('stricture')
  • You have an eye problem called 'glaucoma'.
  • You are being treated for an asthmatic attack.
  • You are elderly and not very mobile.
  • You have problems passing urine.
  • You have a stomach ulcer.
  • You are, or think you might be pregnant.
Check with your doctor or pharmacist before taking Periactin 4mg Tablets if:
  • You have ever been told that you have high pressure inside your eye (high intra-ocular pressure).
  • You have an over-active thyroid gland.
  • You have high blood pressure.
  • You have heart problems.
  • You have asthma.
  • You are taking or have recently taken any other medicines, including medicines obtained without a prescription. This includes herbal medicines. Also, it is important to tell your doctor or pharmacist if you take:
    • Sleeping pills - such as temazepam, nitrazepam, zopiclone, zaleplon or zolpidem.
    • Medicines for worry or anxiety - such as diazepam, alprazolam, chlordiazepoxide, clorazepate.
    • Medicines for depression - such as diazepam, alprazolam, chlordiazepoxide, clorazepate.
    • Any medicines that make you sleepy - such as sedatives or tranquillisers.

Patient Information

Always read the product information. Click on the link below to view the Patient Information Leaflet. Requires Adobe Reader – if you cannot open the file, please
click here to download.

Patient Information Leaflet

Feefo Reviews

Next Working Day Delivery as standard for mainland UK orders
Free delivery on orders over £50.00 to mainland UK
NHS and Private Prescriptions delivered straight to your door