Patient Leaflet Updated 01-Jun-2026 | Morningside Healthcare Ltd
Naratriptan 2.5 mg film coated tablets
Naratriptan 2.5 mg film-coated tablets
Naratriptan
1. What Naratriptan tablets are and what they are used for
2. What you need to know before you take Naratriptan tablets
3. How to take Naratriptan tablets
4. Possible side effects
5. How to store Naratriptan tablets
6. Contents of the pack and other information
Naratriptan tablets contain naratriptan (as hydrochloride), which belongs to a group of medicines called triptans (also known as 5-HT1 receptor agonists).
Naratriptan tablets are used to treat migraine.
Migraine symptoms are likely to be caused by the temporary swelling of blood vessels in the head. Naratriptan tablets are believed to reduce the widening of these blood vessels. This in turn helps to take away the headache and relieve other symptoms of a migraine attack, such as feeling or being sick (nausea and vomiting) and sensitivity to light and sound.
If any of these apply to you:
Tell your doctor and don’t take Naratriptan tablets.
Talk to your doctor or pharmacist before taking Naratriptan tablets.
If you have any extra risk factors
In very rare cases people have developed serious heart conditions after taking Naratriptan tablets, even though they had no signs of heart disease before.
If any of the points in the list applies to you, it could mean you have a greater risk of developing heart disease so:
Tell your doctor so that your heart function can be checked before Naratriptan tablets are prescribed for you.
If you are allergic to antibiotics called sulphonamides
If so, you may also be allergic to Naratriptan tablets. If you know you are allergic to an antibiotic but you are not sure whether it is a sulphonamide:
Tell your doctor or pharmacist before taking Naratriptan tablets.
If you take Naratriptan tablets frequently
Taking Naratriptan tablets too often may make your headaches worse.
Tell your doctor if this applies to you. He or she may recommend you stop taking Naratriptan tablets.
If you feel pain or tightness in your chest after you take Naratriptan tablets
These effects may be intense but they usually pass quickly. If they don’t pass quickly, or they become severe:
Naratriptan tablets are not recommended for people aged over 65 or for children under the age of 18.
Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines.
Some medicines must not be taken with Naratriptan tablets, and others may cause side effects if they’re taken with Naratriptan tablets. You must tell your doctor if you are taking:
If you are pregnant, think you may be pregnant or are planning to have a baby, ask your doctor for advice before taking this medicine. There is only limited information about the safety of Naratriptan tablets for pregnant women, though up till now there is no evidence of any increased risk of birth defects. Your doctor may recommend that you do not take Naratriptan tablets while you are pregnant.
Do not breast-feed your baby for 24 hours after taking Naratriptan tablets. If you express any breast milk during this time, discard the milk and don’t give it to your baby.
Either the symptoms of migraine or your medicine may make you drowsy. If you are affected, don’t drive or operate machinery.
Naratriptan tablets contain a small amount of sugar called lactose. If you have an intolerance to lactose or any other sugars ask your doctor for advice about taking Naratriptan tablets.
This medicine contains less than 1 mmol sodium (23 mg) per tablet, that is to say essentially ‘sodium-free’.
Only take Naratriptan tablets after your migraine headache begins.
Don’t take Naratriptan tablets to try to prevent an attack.
Always take this medicine exactly as your doctor has told you. Check with your doctor or pharmacist if you are not sure.
The usual dose for adults aged 18 to 65 is one Naratriptan 2.5 mg tablet, swallowed whole with water.
Naratriptan tablets are not recommended for children under 18 and adults over 65.
When to take Naratriptan tablets
It is best to take Naratriptan tablets as soon as you feel a migraine coming on, although it can be taken at any time during an attack.
If your symptoms start to come back
You can take a second Naratriptan tablet after 4 hours, unless you have kidney or liver damage. If you have kidney or liver damage don’t take more than one tablet in 24 hours.
No one should take more than two tablets in 24 hours.
If the first tablet has no effect
Don’t take a second tablet for the same attack.
If Naratriptan tablets don’t give you any relief ask your doctor or pharmacist for advice.
Taking too many Naratriptan tablets could make you ill. If you have taken more than two tablets in 24 hours contact your doctor for advice.
Like all medicines, this medicine can cause side effects, although not everybody gets them.
Tell your doctor straight away if you notice any of the following serious side effects - you may need urgent medical treatment:
If you get any of these symptoms soon after taking Naratriptan tablets don’t take any more. Contact a doctor straight away.
Heaviness, pressure, tightness or pain in the chest, throat or other parts of the body (affects up to 1 in 100 people). These effects may be intense but generally pass quickly.
If these effects continue or become severe (especially the chest pain) get medical help urgently. In a very small number of people these symptoms can be caused by a heart attack.
Common:
(may affect up to 1 in 10 people)
If you get any of these effects tell your doctor or pharmacist.
Uncommon:
(may affect up to 1 in 100 people)
If you get any of these effects tell your doctor or pharmacist.
Very rare:
(may affect up to 1 in 10,000 people)
If you get any of these effects tell your doctor or pharmacist.
If you get any side effects, talk to your doctor or 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 or search for MHRA Yellow Card in the Google Play or Apple App Store.
By reporting side effects you can help provide more information on the safety of this medicine.
Keep this medicine out of the sight and reach of children. Do not use this medicine after the expiry date that is stated on the carton after EXP. The expiry date refers to the last day of that month. This medicinal product does not require any special storage conditions.
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.
The tablet is Green ‘D’ shaped biconvex coated tablets debossed with ‘U54’ on one side and plain on the other side. They are available in blister packs of 2, 3, 4, 6, 12 or 18 tablets and HDPE containers of 30 tablets and 500 tablets, although not all pack sizes may be marketed.
This leaflet was last revised in May 2025.
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+44 (0)116 204 5950