Ready & Packaged Foods
All →Vegetables & Legumes
All →Desserts & Confectionery
All →Meat & Protein
All →Grains & Bakery
All →Beverages
All →Milk & Dairy
All →
Dietary supplement; low-calorie source of magnesium
CALORIES · 100 G
GI
POTASSIUM · 100 G
FIBER · 100 G
1 piece (whole) of Magnesium effervescent tablet (4 g) has 10 calories. That works out to 240 calories per 100 g. It contains 2.4 g of carbs, 0 g of protein, 0 g of fat and 0 g of fiber. Its glycemic index is 0 (low), so it raises blood sugar slowly.
Selected: 1 piece (whole) · 4 g
10
KCAL / 4G
Carbs
2.4g
· 1% 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 | 10 kcal | |
| Total fat | 0 g | 0% |
| Saturated fat | 0 g | 0% |
| Trans fat | 0 g | |
| Sodium | 160 mg | 7% |
| Total carbohydrate | 2.4 g | 1% |
| 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.
Log this food in EatBetter
100,000+ people use it
📸 Scan the code to get the app free.

| Serving | Amount | Calories |
|---|---|---|
| 1 piece (whole) | 4 g | 10 kcal |
| 1 piece (quarter) | 1 g | 2 kcal |
| 1 piece (half) | 2 g | 5 kcal |
| 1 serving (small) | 4 g | 10 kcal |
| 2 piece (double) | 8 g | 19 kcal |
| 1 serving (medium) | 8 g | 19 kcal |
| 3 piece (triple) | 12 g | 29 kcal |
| 100 g | 100 g | 240 kcal |
Calculated from 240 calories per 100 g.
Dissolve a magnesium effervescent tablet completely in water, then drink it; do not chew or swallow it dry. Follow the product directions for how much water to use and how often to take it.
The right daily amount depends on the elemental magnesium in that particular magnesium effervescent tablet and your needs. Follow its package directions rather than assuming tablets from different brands provide the same amount.
There is no proven best time for everyone to take a magnesium effervescent tablet. Choose a time you can follow consistently; taking it in the evening does not guarantee better sleep.
Magnesium effervescent tablets can cause diarrhea, nausea, or abdominal cramping, especially when intake is high. People with kidney disease may be at greater risk of magnesium buildup and should ask a healthcare professional before using one.
A magnesium effervescent tablet fizzes because acidic ingredients react with bicarbonate when water is added. Its manufactured formulation makes it an ultra-processed product; the fizz itself does not mean the magnesium works better.
Yes, a magnesium effervescent tablet can generally be taken on an empty stomach, but it may upset some people’s stomachs. If that happens, taking it with food may feel more comfortable; follow the product directions.
A magnesium effervescent tablet is not a sleep medicine, and taking one has not been shown to improve sleep for everyone. Correcting a magnesium deficiency may be relevant, but taking the tablet at bedtime does not guarantee a sleep benefit.
A magnesium effervescent tablet can reduce the absorption of some antibiotics, thyroid medicines, and osteoporosis medicines. Ask a doctor or pharmacist how to space it from your medicines, since the appropriate interval depends on the drug.
Sugar, sweeteners, and sodium vary by magnesium effervescent tablet. Some fizzing ingredients contribute sodium, so people limiting sodium should check the product’s ingredient and nutrition information before choosing one.
Keep a magnesium effervescent tablet in its tightly closed tube in a cool, dry place, away from moisture. Do not use tablets that have become damp, softened, or started dissolving.
Vitamins
Vitamin A
0µg · 0% DV
B1
0mg · 0% DV
B2
0mg · 0% DV
B3
0mg · 0% DV
Minerals
Sodium
160mg · 7% DV
Calcium
0mg · 0% DV
Iron
0mg · 0% DV
Magnesium
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 10 calories in 1 piece (whole) (4 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 Magnesium effervescent tablet is a dietary supplement containing magnesium. It is dissolved in water before drinking, rather than swallowed whole; the ingredients and directions can vary between products.
The finished drink may taste lightly tart or flavoured, depending on the formulation. It is an easy option at breakfast or during the day, and is usually best prepared as directed on the pack. Although the nutrition table lists values for the tablet, it is not typically eaten as a source of energy or protein. Check the label for serving and mixing instructions, and treat it as a supplement alongside your usual diet, not as a replacement for food.
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
✓ 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
Ask the AI nutrition coach — calories, portions, alternatives and more, answered in seconds in the app.
Nutrition data compiled from USDA FoodData Central and scientific sources.