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Paracetamol 1000 mg effervescent tablets – patient leaflet, side effects, dosage

Last updated: · Text from the MHRA, as of · About this document

Medicine status: Prescription only (POM) Details

Medicine strength:
1000 mg
Contains active substance:

Patient leaflet - Paracetamol 1000 mg effervescent tablets

1. WHAT PARACETAMOL EFFERVESCENT IS AND WHAT IT IS USED FOR

This medicine contains the active substance paracetamol, which belongs to a group of medicines called analgesics and antipyretics.

Paracetamol Effervescent are used for the relief of headache, tension headache, migraine, backache, rheumatic and muscle pain, toothache and period pain. They also relieve sore throat and the fever, aches and pains of colds and flu.

You must talk to a doctor if you do not feel better or if you do not improve after 3 days

2. WHAT YOU NEED TO KNOW BEFORE YOU TAKE PARACETAMOL EFFERVESCENT

Do not take Paracetamol Effervescent:

  • if you are allergic to paracetamol or any of the ingredients of this medicine (listed in section 6).
  • if you are already taking other medicines containing paracetamol

Warnings and precautions

Talk to your doctor or pharmacist before taking Paracetamol Effervescent if you:

  • have severe liver or kidney disease
  • are underweight or malnourished
  • have a liver problem caused by alcohol
  • if you have a severe infection as this may increase the risk of metabolic acidosis. Signs of metabolic acidosis include:

    • Deep, rapid, difficult breathing
    • Feeling sick (nausea), being sick (vomiting)
    • Loss of appetite

      During treatment with Paracetamol Effervescent, tell your doctor straight away if:

      • If you have severe illnesses, including severe renal impairment or sepsis (when bacteria and their toxins circulate in the blood leading to organ damage), or you suffer from malnutrition, chronic alcoholism or if you are also taking flucloxacillin (an antibiotic). A serious condition called metabolic acidosis (a blood and fluid abnormality) has been reported in patients in these situations when paracetamol is used at regular doses for a prolonged period or when paracetamol is taken together with flucloxacillin. Symptoms of metabolic acidosis may include: serious breathing difficulties with deep rapid breathing, drowsiness, feeling sick (nausea) and being sick (vomiting).

Taking a painkiller for headaches too often or for too long can make them worse. Children and adolescents

Do not use Paracetamol Effervescent Tablets in children and adolescents below 16 years of age. Other medicines and Paracetamol Effervescent

Do not take these tablets if you are already taking other medicines containing paracetamol.

Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines.

Certain medicines can interfere with the effectiveness of each other. It is particularly important to tell your doctor or pharmacist before taking this medicine if you are also on:

  • metoclopramide or domperidone (for sickness or stomach problems)
  • Cholestyramine (used to treat high cholesterol)
  • drugs to thin the blood (anti-coagulant drugs e. g. warfarin, other coumarins)
  • flucloxacillin (antibiotic), due to a serious risk of blood and fluid abnormality (called metabolic acidosis) that must have urgent treatment (see section 2).

It may still be alright for you to take Paracetamol Effervescent and your doctor will be able to decide what is suitable for you.

Paracetamol Effervescent with food and drink

Paracetamol Effervescent should be dissolved in at least half a glass of water and can be taken with or without a meal.

Pregnancy and breast-feeding

If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask your doctor or pharmacist for advice before taking any medicine.

If necessary, Paracetamol Effervescent can be used during pregnancy. You should use the lowest possible dose that reduces your pain and/or your fever and use it for the shortest time possible. Contact your doctor if the pain and/or fever are not reduced or if you need to take the medicine more often.

Paracetamol passes into breast milk. Therapeutic doses of Paracetamol can be administered during breast-feeding.

Driving and using machines

The effect of paracetamol on the ability to drive and operate machinery is not known. If you feel dizzy or drowsy do not drive or operate machinery.

Paracetamol Effervescent contain sodium and aspartame.

This medicine contains 586.11 mg sodium (main component of cooking/table salt) in each effervescent tablet. This is equivalent to 29.31% of the recommended maximum daily dietary intake of sodium for an adult.

This medicine contains 10 mg aspartame in each effervescent tablet. Aspartame is a source of phenylalanine. It may be harmful if you have phenylketonuria (PKU), a rare genetic disorder in which phenylalanine builds up because the body cannot remove it properly.

3. HOW TO TAKE PARACETAMOL EFFERVESCENT

Always take this medicine exactly as described in this leaflet or as your doctor, pharmacist or nurse has told you. Check with your doctor, pharmacist or nurse if you are not sure. Do not exceed the recommended doses. If symptoms persist consult your doctor. Dosage

The usual doses for Paracetamol Effervescent are as follows:

Adults (including elderly): Take 1 tablet up to 4 times a day, or as instructed by your doctor. Do not take more than 4 tablets in 24 hours

Adolescents of 16 to 18 years: as adults

Children below 16 years: Not recommended for children under 16 years of age. The dose should not be repeated more frequently than every 4 hours, and not more than 4 doses should be taken in any 24-hour period.

Do not continue to take these tablets for more than 3 days unless instructed by your doctor. Method of Administration

For oral administration only. These tablets should be dissolved in at least half a glass of water before taking them. These tablets are meant to be dissolved first so don’t try to swallow them whole. Stir before use.

If you take more Paracetamol Effervescent than you should:

If you have accidentally taken more than the recommended dose, contact your nearest hospital casualty department or tell your doctor or pharmacist immediately. Remember to take the pack and any remaining tablets with you.

Immediate medical advice should be sought in the event of an overdose, even if you feel well, because of the risk of delayed, serious liver damage, pallor, nausea, vomiting, anorexia (loss of appetite), and abdominal pain. An overdose of paracetamol can cause serious liver damage, which may not show any signs for a day or two, by which time your treatment may not be successful.

If you have any further questions about this medicine ask your doctor or pharmacist.

4. POSSIBLE SIDE-EFFECTS

Like all medicines, Paracetamol Effervescent can cause side-effects although not everybody gets them.

If you get any of the following symptoms after taking these tablets, stop taking and contact your doctor immediately:

  • Any sudden wheeziness, difficulty in breathing or dizziness, swelling of the eyelids, face, lips or throat.
  • An acute allergic reaction (anaphylaxis) or swelling of the skin.
  • Serious skin disease causing rash, skin peeling and sores
  • Skin disease causing rash, skin peeling and sores
  • Skin rash with blisters and fever
  • Very rare cases of serious skin reactions have been reported such as fixed drug eruption (may look like round or oval patches of redness and swelling of the skin).
  • Difficulty in breathing or wheezing (bronchospasm) Page 3 Page 4

    Other side effects include

    • decreased formation of cells, severe decrease in white blood cells which may lead to severe infections (agranulocytosis),
    • reduction in blood platelets, which increases the risk of bleeding or bruising (thrombocytope nia)
    • abnormal liver function (yellowing of the skin and whites of the eyes)
    • A serious condition that can make blood more acidic (called metabolic acidosis), in patients with severe illness using paracetamol (see section 2) - Frequency Not known. (frequency cannot be estimated from the available data)

Reporting of side effects

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: https://yellowcard.mhra.gov.uk/ 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.

5. HOW TO STORE PARACETAMOL EFFERVESCENT

Keep this medicine out of the sight and reach of children.

Do not store your tablets above 25°C. Store in the original package and protect from moisture. Do not use this medicine after expiry date which is stated on the carton (EXP) after EXP. The expiry date refers to the last day of that month.

Do not throw away any medicines via wastewater or household waste.

Ask your pharmacist how to dispose of medicines no longer required.

These measures will help to protect the environment.

6. Contents of the pack and other information

What Paracetamol Effervescent contains:

The active ingredient is paracetamol. Each effervescent tablet contains 1000mg paracetamol. The other ingredients are anhydrous citric acid (E330), povidone, sodium bicarbonate (E500), sodium saccharin, anhydrous sodium carbonate, simeticone (E900), polysorbate 80 (E433) and aspartame (E951).

What Paracetamol Effervescent look like and the contents of the pack:

Paracetamol Effervescent are white, circular, flat bevelled effervescent tablets, which are plain on both sides.

Your medicine is available in blister packs of 8, 12 and 16 tablets (not all pack sizes may be marketed).

Marketing Authorisation Holder and Manufacturer:

The Product Licence holder is Cipla (EU) Limited, Dixcart House, Addlestone Road, Bourne Business Park, Addlestone, Surrey, KT15 2LE, United Kingdom.

The manufacturer responsible for batch release is Cipla (EU) Limited, Dixcart House, Addlestone Road, Bourne Business Park, Addlestone, Surrey, KT15 2LE, United Kingdom. This leaflet is available in formats suitable for the blind and partially-sighted upon request. This leaflet was last revised in 12/2024.

About this document

Source: MHRA - Medicines and Healthcare products Regulatory Agency (products.mhra.gov.uk) · Marketing authorisation: PLGB 36390/0383

Last revision stated in the text: December 2024 · MHRA data as of 13 October 2026

Found a mistake? Tell us on the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Facts about Paracetamol 1000 mg effervescent tablets

Prescription needed? Yes, prescription-only medicine (POM)
Active substance Paracetamol
Strength 1000 mg
Pharmaceutical form Oral tablet
White to off white coloured, circular, flat bevelled tablets, plain on both sides.
How is it taken Oral
Excipients Citric acid (anhydrous) (E330),, Povidone,, Sodium bicarbonate (E500),, Sodium saccharin,, Sodium carbonate (anhydrous),, Simeticone (E900),, Polysorbate 80 (E433),, Aspartame (E951).
Is it available? Listed as available (NHS Dictionary of Medicines and Devices – not a record of current supplies)
Shelf life 2 years.
Storage Do not store above 25°C. Store in the original package. Protect from moisture.
Drug group (ATC) Other Analgesics and Antipyretics – Anilides
  1. N Nervous system drugs
    1. N02 Analgesics
      1. N02B Other analgesics and antipyretics
        1. N02BE Anilide analgesics and antipyretics
          1. N02BE01 paracetamol
Marketing authorisation PLGB 36390/0383 (first authorised 6 January 2025)
Marketing authorisation holder Cipla (EU) Limited
Codes BNF 04070100

Sources: the MHRA product information (products.mhra.gov.uk) and the NHS Dictionary of Medicines and Devices (dm+d), release 10.1.0 of 12 October 2026, NHS Business Services Authority. Contains public sector information licensed under the Open Government Licence v3.0.