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Chewable antacid tablet; calcium- and magnesium-based
CALORIES · 100 G
GI
POTASSIUM · 100 G
FIBER · 100 G
2 piece (double) of Rennie antacid tablet (1 g) has 4 calories. That works out to 270 calories per 100 g. It contains 0.9 g of carbs, 0 g of protein, 0 g of fat and 0 g of fiber. Its 92.5 mg of Calcium covers 9% of the Daily Value. Its glycemic index is 78 (high), so it raises blood sugar quickly.
Selected: 2 piece (double) · 1.36 g
4
KCAL / 1.36G
Carbs
0.9g
· 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 | 4 kcal | |
| Total fat | 0 g | 0% |
| Saturated fat | 0 g | 0% |
| Trans fat | 0 g | |
| Sodium | 1.63 mg | 0% |
| Total carbohydrate | 0.9 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 |
|---|---|---|
| 2 piece (double) | 1.4 g | 4 kcal |
| 1 piece (mini) | 0.7 g | 2 kcal |
| 3 piece (triple) | 2 g | 6 kcal |
| 4 piece (large) | 2.7 g | 7 kcal |
| 6 piece (extra large) | 4.1 g | 11 kcal |
| 1 pack (whole) | 9.5 g | 26 kcal |
| 100 g | 100 g | 270 kcal |
Calculated from 270 calories per 100 g.
Rennie antacid tablet is used for short-term relief of heartburn and acid-related indigestion. Its calcium- and magnesium-based antacid ingredients neutralize stomach acid, but they do not treat the underlying cause of recurring symptoms.
Rennie antacid tablet contains calcium- and magnesium-based antacid ingredients; the inactive ingredients can vary by product version and market. It is classified as ultra-processed, but it is a chewable medicine rather than an ordinary food.
Chew Rennie antacid tablet thoroughly or let it dissolve in your mouth; do not swallow it whole. Follow the directions on your own pack for the dose and spacing, since instructions can vary between versions.
Rennie antacid tablet can start relieving symptoms soon after it is chewed and dissolves in the mouth. The timing and duration vary, so persistent or repeatedly returning heartburn should not be managed by taking extra tablets.
The maximum daily amount depends on the specific Rennie antacid tablet and the instructions for the market where it was sold. Follow the pack’s dose and interval, and do not take extra tablets to compensate for symptoms that continue.
Rennie antacid tablet can affect how some medicines are absorbed, including certain antibiotics, iron supplements and thyroid medicines. The required gap varies by medicine, so ask a pharmacist how to space your doses rather than taking them together.
Some people use Rennie antacid tablet during pregnancy, but the appropriate product and dose depend on your circumstances. Ask your doctor before taking it while pregnant, and follow the instructions on the specific pack.
Rennie antacid tablet can sometimes cause constipation, diarrhea or stomach discomfort. Taking more than directed or using it for a prolonged period can disturb calcium or magnesium balance; seek medical advice if effects are severe or persistent.
Rennie antacid tablet is not intended for prolonged daily use without advice. Frequent heartburn may need assessment rather than repeated symptom relief, so follow the pack’s duration guidance and get medical advice if symptoms keep returning.
Chew Rennie antacid tablet or let it dissolve in your mouth; it is not meant to be swallowed whole. This allows the chewable tablet to disperse as intended, and you should follow the specific pack’s directions.
Vitamins
Vitamin A
0µg · 0% DV
B1
0mg · 0% DV
B2
0mg · 0% DV
B3
0mg · 0% DV
Minerals
Calcium
92mg · 9% DV
Magnesium
22mg · 5% DV
Sodium
1.63mg · 0% DV
Iron
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 4 calories in 2 piece (double) (1.36 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.
Rennie antacid tablet is a branded chewable product based on calcium and magnesium compounds, rather than a snack or meal food. It usually has a soft, chalky texture when chewed, while the flavour can vary between versions. People in the UK and elsewhere commonly keep it on hand for occasional heartburn or indigestion, following the directions on the pack; it is not typically served alongside meals. The nutrition listing is mostly carbohydrate, with virtually no protein, though a tablet is a very small serving. If you take other medicines or are unsure when to use it, check the package instructions and ask a pharmacist.
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.