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Chewable antacid tablet
CALORIES · 100 G
GI
POTASSIUM · 100 G
FIBER · 100 G
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.
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%
| Nutrient | Amount | % DV |
|---|---|---|
| Calories | 2 kcal | |
| Total fat | 0 g | 0% |
| Saturated fat | 0 g | 0% |
| Trans fat | 0 g | |
| Sodium | 0 mg | 0% |
| Total carbohydrate | 0.6 g | 0% |
| Fiber | 0 g | 0% |
| Protein | 0 g | 0% |
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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| Serving | Amount | Calories |
|---|---|---|
| 1 piece (small) | 1 g | 2 kcal |
| 2 piece (medium) | 2 g | 5 kcal |
| 3 piece (large) | 3 g | 7 kcal |
| 4 piece (extra large) | 4 g | 10 kcal |
| 1 pack (mini) | 12 g | 29 kcal |
| 100 g | 100 g | 240 kcal |
Calculated from 240 calories per 100 g.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
To burn the 2 calories in 1 piece (small) (1 g):
🚶
Walking (5 km/h)
🏃
Running (8 km/h)
🚴
Cycling
🏊
Swimming
Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.
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.
Low
How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.
Low
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.
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.
No known major allergens
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
SATURATED
0g
MONOUNSATURATED
0g
POLYUNSATURATED
0g
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Nutrition data compiled from USDA FoodData Central and scientific sources.