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A small, flat, pale-cream chewable tablet with a rounded-square shape and a smooth, matte surface rests on a plain background.
●Low GI
Rennie· all products

Rennie tablet Calories

Chewable antacid tablet

CALORIES · 100 G

240kcal

GI

65low

POTASSIUM · 100 G

0mg

FIBER · 100 G

0g

Quick answer

1 piece (small) of Rennie tablet (1 g) has 2 calories. That works out to 240 calories per 100 g. It contains 0.6 g of carbs, 0 g of protein, 0 g of fat and 0 g of fiber. Its 68 mg of Calcium covers 7% of the Daily Value. Its glycemic index is 65 (low), so it raises blood sugar slowly.

Rennie tablet Nutrition Facts

Selected: 1 piece (small) · 1 g

2

KCAL / 1G

Carbs

0.6g

· 0% DV

Protein

0g

· 0% DV

Fat

0g

· 0% DV

Fiber

0g

· 0% DV

DV is the share of the daily value covered, on a 2,000 kcal reference diet.

Calories come from: Carbs 100% · Protein 0% · Fat 0%

Rennie tablet nutrition facts table · 1 piece (small) (1 g)

NutrientAmount% DV
Calories2 kcal
Total fat0 g0%
Saturated fat0 g0%
Trans fat0 g
Sodium0 mg0%
Total carbohydrate0.6 g0%
Fiber0 g0%
Protein0 g0%

Calories: Calories measure energy. Average daily need is 2,000 kcal. Excess calories are stored as fat, too few cause weight loss.

Carbs: Your body's primary energy source. The brain runs exclusively on carbs. Daily need: 275g.

Protein: Essential for muscle repair and cell growth. Daily need: 50g. Keeps you full and boosts metabolism.

Fat: Needed for hormone production and vitamin absorption. Daily need: 78g. Limit saturated fats, choose unsaturated.

Fiber: Critical for digestive health and satiety. Daily need: 28g. Stabilizes blood sugar, lowers cholesterol.

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How Many Calories in 1 Small Rennie tablet?

ServingAmountCalories
1 piece (small)1 g2 kcal
2 piece (medium)2 g5 kcal
3 piece (large)3 g7 kcal
4 piece (extra large)4 g10 kcal
1 pack (mini)12 g29 kcal
100 g100 g240 kcal

Calculated from 240 calories per 100 g.

Frequently Asked Questions About Rennie tablet

What is a Rennie tablet used for?

A Rennie tablet is a chewable antacid used for short-term relief of heartburn and indigestion caused by excess stomach acid. It neutralizes acid but does not treat the underlying cause of recurring symptoms.

Should you chew or swallow a Rennie tablet?

Chew a Rennie tablet or let it dissolve in your mouth; it is not intended to be swallowed whole. Follow the directions on your specific pack, since formulations and instructions can vary.

How quickly does a Rennie tablet work?

A Rennie tablet starts neutralizing stomach acid soon after it is chewed, so relief may come quickly. How long relief lasts varies; frequent or persistent symptoms need attention rather than repeated self-treatment.

How many Rennie tablets can you take in a day?

The maximum daily amount depends on the particular Rennie product and the person taking it. Follow the dose on the package leaflet and do not exceed it; seek urgent advice if someone takes too many.

Can you take a Rennie tablet while pregnant?

A Rennie tablet may be suitable for some pregnant people, but the right choice depends on the product, dose, and individual circumstances. Check the leaflet and ask a doctor or pharmacist before using it regularly.

What are the side effects of a Rennie tablet?

A Rennie tablet is usually well tolerated, but it can cause nausea, constipation, or diarrhoea. Taking too much or using it for a long time can disturb mineral levels; get help for severe or persistent symptoms.

Can you take a Rennie tablet with other medicines?

A Rennie tablet can interfere with the absorption of some medicines, including certain antibiotics, iron, and thyroid medicines. The required gap varies by medicine, so ask a pharmacist and follow the instructions for each product.

Can you take a Rennie tablet after eating?

Yes, a Rennie tablet can generally be taken when heartburn or indigestion occurs, including after a meal. Follow the timing instructions on your particular pack, and do not exceed its stated dose.

How long can you use a Rennie tablet for?

Use a Rennie tablet for occasional symptoms and only for the period allowed by its leaflet. If heartburn keeps returning or does not improve, seek medical advice instead of relying on regular antacid use.

What ingredients are in a Rennie tablet?

Rennie tablets commonly use calcium carbonate and magnesium carbonate as their active ingredients, with other ingredients depending on the formulation. They are factory-made, ultra-processed chewable antacid products; check your pack for its exact ingredient list.

Rennie tablet Vitamins & Minerals

Vitamins

Vitamin A

0µg · 0% DV

B1

0mg · 0% DV

B2

0mg · 0% DV

B3

0mg · 0% DV

Minerals

Calcium

68mg · 7% DV

Iron

0mg · 0% DV

Magnesium

0mg · 0% DV

Zinc

0mg · 0% DV

Sodium

0mg · 0% DV

Potassium ⭐

0mg · 0% DV

Rennie tablet Glycemic Index

GLYCEMIC INDEX

65
Low
0 Low5570100

GLYCEMIC LOAD

0
Low

Accounts for portion size — a more realistic measure than GI alone.

How to Burn Off Rennie tablet

To burn the 2 calories in 1 piece (small) (1 g):

🚶

1min

Walking (5 km/h)

🏃

1min

Running (8 km/h)

🚴

1min

Cycling

🏊

1min

Swimming

Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.

What is Rennie tablet?

A Rennie tablet is a chewable antacid product, not a snack or a traditional food. It is sold as a small, firm tablet intended to be chewed rather than served as part of a meal. In the UK and other markets where the brand is familiar, people generally keep it on hand and use it as directed; it is not typically paired with tea or food.

The flavour and mouthfeel can vary by product version, but the tablet is made to be chewed. Its nutrition listing is dominated by carbohydrate, with no protein, fat or fibre shown. A typical piece is about 1 g, so the per-100 g figures describe a much larger amount than most people would consume at once. Follow the pack directions and store it out of children’s reach.

How Nutritious Is Rennie tablet?

Nutrient density

Low

5/ 100

How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.

Satiety score

Low

16/ 100

An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.

Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.

Is Rennie tablet Processed?

NOVA 4

Ultra-Processed

1. Unprocessed

2. Minimally Processed

3. Processed

4. Ultra-Processed

NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.

Does Rennie tablet Contain Allergens?

No known major allergens

Gluten free
Dairy free
Eggs free
Peanuts free
Tree nuts free
Fish free
Soy free
Sesame free

Which Diets Is Rennie tablet Good For?

Vegan

— Not suitable

Vegetarian

✓ Suitable

Gluten-Free

✓ Suitable

Dairy-Free

— Not suitable

Mediterranean

— Not suitable

Paleo

— Not suitable

Whole30

— Not suitable

DASH

— Not suitable

Keto

— Not suitable

Low FODMAP

— Not suitable

Rennie tablet Fat Profile

SATURATED

0g

MONOUNSATURATED

0g

POLYUNSATURATED

0g

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Nutrition data compiled from USDA FoodData Central and scientific sources.