Patient Leaflet Updated 15-Aug-2025 | Haleon UK Trading Limited
Panadol ActiFast
Panadol ActiFast
Paracetamol
This medicine is available without prescription, but you still need to use Panadol ActiFast tablets carefully to get the best results from them.
1. What Panadol ActiFast does
2. Check before you take Panadol ActiFast
3. How to take Panadol ActiFast
4. Possible side effects
5. How to store Panadol ActiFast
6. Further information
Panadol ActiFast is used for fast pain relief of headaches, including migraine and tension headaches, toothache, backache, rheumatic and muscle pains, and period pain.
It also relieves sore throat and the feverishness, aches and pains of colds and flu.
The active ingredient is paracetamol which is a painkiller and also reduces your temperature when you have a fever.
Signs of metabolic acidosis may include:
During treatment with Panadol ActiFast, tell your doctor straight away if you get a combination of these symptoms. You may need to avoid using this product altogether or limit the amount of paracetamol that you take.
Talk to your doctor or pharmacist before taking these tablets if you are taking any prescribed medicines; particularly metoclopramide or domperidone (for nausea [feeling sick] or vomiting [being sick]) or colestyramine (to lower blood cholesterol); flucloxacillin (antibiotic), due to a serious risk of blood and fluid abnormality (called metabolic acidosis) that must have urgent treatment (see section 2). If you take blood thinning drugs (anticoagulants e.g. warfarin) and you need to take a pain reliever on a daily basis, talk to your doctor because of the risk of bleeding. But you can still take occasional doses of Panadol ActiFast at the same time as anticoagulants.
Talk to your healthcare professional before taking Panadol ActiFast if you are pregnant. You can take this product whilst breast feeding.
Adults and children aged 16 years and over:
Swallow 2 tablets with half a tumbler of water (100 ml), every 4 hours as needed. Do not take more than 8 tablets in 24 hours.
To obtain fast action pain relief, the dose must be 2 tablets and must be taken with half a tumbler of water (100 ml). For fastest pain relief, this should be on an empty stomach.
Children aged 12-15 years:
Swallow 1 tablet with half a tumbler of water (100 ml), every 4 hours as needed. Do not give more than 4 tablets in 24 hours.
Talk to a doctor at once if you take too much of this medicine even if you feel well. This is because too much paracetamol can cause delayed, serious liver damage.
If your symptoms continue or your headache becomes persistent, see your doctor.
Like all medicines, Panadol ActiFast can have side effects but not everybody gets them.
A small number of people have had side effects. Very rare cases of serious skin reactions have been reported.
Stop taking the medicine and tell your doctor immediately if you experience:
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 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 out of the sight and reach of children.
Do not use this medicine after the ‘EXP’ date shown on the pack.
Do not store above 25°C.
Active ingredient: Each tablet contains Paracetamol 500 mg.
Other ingredients: Sodium bicarbonate, starch pregelatinised, povidone, maize starch, potassium sorbate (E 202), microcrystalline cellulose, magnesium stearate, carnauba wax, titanium dioxide (E 171), polydextrose, hypromellose, glycerol triacetate, polyethylene glycol.
Contains no animal derived ingredients.
Packs of Panadol ActiFast contain 10 or 14 tablets.
The marketing authorisation holder is
and all enquiries should be sent to this address.
The manufacturer is
This leaflet was last revised in April 2025.
Trade Marks are owned by or licensed to the Haleon group of companies.
62000000218582
The Heights, Weybridge, Surrey, KT13 0NY, UK
0800 783 8881
https://www.haleon.com/