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Rennie is a chewable antacid tablet containing calcium carbonate that relieves heartburn, acid indigestion and trapped wind by neutralising excess stomach acid, pack of 24, sold by Ways Pharmacy (UK).
Key facts
| Active ingredient | Calcium carbonate (an antacid); most Rennie tablets also contain magnesium carbonate — check your pack |
|---|---|
| Type | Antacid |
| Format | Chewable tablets |
| Pack | 24 tablets |
| Relieves | Heartburn, acid indigestion, upset stomach and trapped wind |
| Age | Adults and children 12 years and over |
| Sold by | Ways Pharmacy, UK (GPhC-registered) |
Who it is for
- Adults who get occasional heartburn or acid indigestion
- People with an upset or acidy stomach after rich, fatty or spicy meals
- People who want a chewable tablet they can take when symptoms appear
- People looking for fast-acting relief from trapped wind linked to indigestion
Not suitable for: anyone allergic to the ingredients. Speak to your pharmacist before use if you have kidney problems, have been told to follow a calcium-restricted diet, take other medicines, or are pregnant or breastfeeding.
How to use
- Read the patient information leaflet on the pack before you start.
- Adults and children 12 and over: suck or chew 1 to 2 tablets when symptoms occur.
- If needed, repeat after a few hours; do not exceed the maximum daily dose stated on the pack.
- Take separately from other medicines, as antacids can affect how some are absorbed.
- If symptoms persist, ask your pharmacist for advice.
Frequently asked questions
How does Rennie work?
Rennie contains calcium carbonate, an antacid that neutralises excess acid in the stomach. This helps relieve the burning feeling of heartburn and acid indigestion.
How fast does Rennie work?
As a chewable antacid, Rennie starts to neutralise stomach acid soon after you chew or suck a tablet, so relief is usually felt quickly.
How long can I take Rennie?
Rennie is for occasional, short-term relief. If you need it regularly, or symptoms persist, speak to your pharmacist or doctor so the cause can be checked.
Can I take Rennie in pregnancy?
Heartburn is common in pregnancy. If you are pregnant or breastfeeding, speak to your pharmacist or doctor before use to confirm it is suitable for you.
Can I take Rennie with other medicines?
Antacids can affect how some medicines are absorbed. Leave a gap between Rennie and other medicines, and check with your pharmacist if you are unsure.
Safety and storage
- Always read the patient information leaflet before use, as manufacturers update it regularly.
- Do not exceed the stated dose. Ask your pharmacist if symptoms persist.
- Speak to your pharmacist before use if you have kidney problems or are on a calcium-restricted diet.
- Keep out of the sight and reach of children and do not use after the expiry date.
- Store as directed on the pack.
References
This page provides factual information about an over-the-counter antacid medicine. Always read the patient information leaflet before use. If symptoms persist, speak to a pharmacist or doctor. Suspected side effects can be reported via the MHRA Yellow Card Scheme.
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