How does Periactin 4mg Antihistamine Tablets - 30 Tablets work?
Periactin 4mg Antihistamine Tablets - 30 Tablets contain the active ingredient cyproheptadine hydrochloride. Cyproheptadine Hydrochloride works by stopping the unwanted effects of histamine and serotonin.

Directions
Always take Periactin 4mg Antihistamine Tablets exactly as described in the patient information leaflet or as your doctor / pharmacist has told you.

• Children aged 2-6 years old: Half a tablet should be given 2-3 times a day. If an extra dose is required this should be given at bedtime. Do not give your child more than 3 tablets a day.

• Children aged 7-14 years old: 1 tablet should be given 2-3 times a day. If an extra dose is required this should be given at bedtime. Do not give your child more than 4 tablets a day.

• Adults and children over 14 years old: Start with 1 tablet 3 times a day. Most people usually require 3-4 tablets a day. Do not take more than 8 tablets a day.

• For migraines: Take 1 tablet when you feel the migraine start. If needed you can take another one after 30 minutes. You can then take 1 tablet every 4-6 hours to maintain relief.

Side effects
Like all medicines, Periactin 4mg Antihistamine Tablets may cause side effects in some people, but these won’t affect everybody. Common side effects include:

• Insomnia

• Sleepiness

• Irritability

• Dizziness

• Feeling faint

• Nausea

• Vomiting

• Diarrhoea

• Fatigue

• Weight gain
  For more information on potential side effects, refer to the patient information leaflet. If you experience any side effects, including any not included in the patient information leaflet, you can report them using the MHRA Yellow Card Scheme.

Serious side effects
Seek emergency medical attention if you notice any signs of a severe allergic reaction, symptoms of which include swelling of the face and throat, skin rash, breathing difficulties and/or loss of consciousness.

Warnings
Periactin 4mg Antihistamine Tablets may be unsuitable for certain people. Do not take these tablets if you are allergic to any of the ingredients or if:

• You have a narrowing of the opening of the stomach

• You have 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
  Talk to your doctor or pharmacist before taking this medicine if:

• You have ever been told that you have high pressure inside your eye (high intraocular pressure)

• You have an overactive thyroid

• You have high blood pressure

• You have heart problems

• You have asthma

Using/taking other medicines
If you are taking or have recently taken any medication, including medication obtained without a prescription, talk to your GP or pharmacist before taking this medication. Do not take this medication if you are currently taking MAO inhibitors e.g. moclobemide, phenelzine, tranylcypromine, linezolid or pargyline. You must speak to your GP if you are taking:

• Sleeping pills e.g. temazepam, nitrazepam, zopiclone

• Anxiety medicines e.g. diazepam, alprazolam, chlordiazepoxide

• Antidepressants e.g. fluoxetine, paroxetine, imipramine

• Medications that make you sleepy e.g. sedatives or tranquillisers

Age restrictions
This medication is not suitable for children under 2 years old.

Pregnancy and breastfeeding
This medication should not be taken during pregnancy. If you are pregnant or breastfeeding, think you may be pregnant or are planning to have a baby, you must ask your doctor or pharmacist for advice before taking any new medicine.

Alcohol
Do not drink alcohol whilst you are taking this medication.

Driving and operating machinery
Do not drive or operate machinery if you are taking this medication as it may make you sleepy.

Storage information
Store in a cool, dry place out of sight and reach of children. Do not use after the expiry date, referring to the last day of the month stated on the packaging. Do not throw away any medicines via wastewater or household waste.

Important information
This product is a medicine; make sure to speak to your doctor or pharmacist before taking this product if you have an underlying medical problem or are taking any other medicine or complementary therapy. If your symptoms get worse or continue after taking this product, contact us or your doctor. If you are pregnant, trying to become pregnant, or breastfeeding, speak to your doctor or pharmacist before taking this product. If you suffer from any allergies, ask your doctor or pharmacist if this medicine is right for you. Store all medicines out of sight and reach of children. Please read the included leaflet carefully before taking this product. Please contact your GP if appropriate regarding this product.