Advanced search

Report side effect

Report a suspected side effect or falsified product to the MHRA Yellow Card scheme.
Go to {yellow_card_logo} site
{arrow_up} Back to top

Boots Heartburn Relief Aniseed Flavour (150ml)

Active Ingredient:
calcium carbonate, sodium bicarbonate, sodium alginate
THE BOOTS COMPANY PLC See contact details
About Medicine
The Patient Information Leaflet (PIL) is the leaflet included in the pack with a medicine.
Last updated on emc: 23 Sep 2022

Below is a text only representation of the Patient Information Leaflet (ePIL).

The text only version may be available in large print, Braille or audio CD. For further information call emc accessibility on {phone} 0800 198 5000. The product code(s) for this leaflet is: PL 04917/0021.

Boots Heartburn Relief Aniseed Flavour (150ml)


Boots Heartburn Relief Aniseed Flavour

Sodium bicarbonate, Sodium alginate, Calcium carbonate

Read all of this leaflet carefully before you start taking this medicine because it contains important information for you. Always take this medicine exactly as described in the leaflet or as your doctor or pharmacist has told you.

What this medicine is and what it is used for

This medicine belongs to a group of medicines called ‘reflux suppressants’ which form a protective layer on top of the stomach contents to prevent stomach acid escaping from the stomach where it works into the food pipe causing pain and discomfort. This medicine is used for the treatment of symptoms of gastro-oesophageal reflux such as acid regurgitation, heartburn and indigestion, which may occur, for example, following meals or during pregnancy.

Before using this medicine
Do not take this product if:
  • You know you are allergic to any of the ingredients as very rarely difficulty in breathing and skin rashes have occurred (see further information for a full list of ingredients).

Take special care before treatment with this medicine:

This medicine contains 286.5 mg (12.45 mmol) sodium (main component of cooking/table salt) in each 20 ml dose. This is equivalent to 14.3% of the recommended maximum daily dietary intake of sodium for an adult. The maximum daily dose of this product is equivalent to 57.2% of the WHO recommended maximum daily intake for sodium. Talk to your doctor or pharmacist if you need this product on a daily basis for a prolonged period, especially if you have been advised to follow a low sodium (salt) diet.

This medicine contains ethyl parahydroxybenzoate (E214), propyl parahydroxybenzoate (E216), and butyl parahydroxybenzoate which may cause an allergic reaction (possibly delayed).

Taking other medicines

Do not take this product within two hours of taking other medicines by mouth as it can interfere with the action of some other medicines. This is especially important if you are taking antibiotics (tetracyclines and quinolones such as norfloxacin), iron preparations, antifungals such as ketoconazole, digoxin and beta blockers (for heart conditions), penicillamine (for rheumatoid arthritis), glucocorticoids (for inflammatory and autoimmune disorders), neuroleptics (for mental illness), thyroid hormones, chloroquine (for malaria), estramustine (for prostate cancer), bisphosphonates (for osteoporosis), ACE inhibitors (for high blood pressure), analgesics (for pain relief), antiepileptics, antipsychotics and lithium (for mental health problems).

How to take this medicine

To be taken by mouth, after meals and at bedtime. Shake bottle well before use.

Adults and children over 12 years: Take 10-20 ml (two to four 5 ml spoonfuls) after meals and at bedtime, up to four times a day.

Children under 12 years: Should be given only on medical advice.

After taking this medicine: If symptoms persist after 7 days consult your doctor.

If you take too much of this product you may feel bloated and experience some abdominal discomfort. It is unlikely to cause any harm, but please consult your doctor or pharmacist. If you forget a dose it is not necessary to double the dose next time, just carry on taking as before.

Possible Side effects

Very rarely (less than 1 in 10,000 patients treated) an allergic reaction to the ingredients may occur. Symptoms of this may include skin rash, difficulty in breathing, dizziness or swelling of the face, lips, tongue or throat. If you experience these or any side effects stop taking the product and consult your doctor or pharmacist.

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 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.

How to store this medicine

Keep all medicines out of the sight and reach of children.

Do not use after the expiry date shown on the pack (EXP month/year). Do not store above 25°C. Do not refrigerate.

Further information

Each 5 ml of this medicine contains 133.5 mg Sodium Bicarbonate, 250 mg Sodium Alginate, 80 mg Calcium Carbonate. It also contains carbomer, sodium hydroxide, saccharin sodium, ethyl parahydroxybenzoate (E214), propyl parahydroxybenzoate (E216), butyl parahydroxybenzoate, isopropyl alcohol, erythrosine colour (E127), star anise oil and purified water.

MA Holder and Manufacturer
Pinewood Laboratories Ltd.
Co. Tipperary

PL 04917/0021

Revision date: 03/2022

Artwork reference: 23LL05825PW

Company image
1 Thane Road West, Beeston, Nottingham, NG2 3AA
+44 (0)1159 595 165
+44 (0)1159 592 565