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Iron supplement
CALORIES · 100 G
GI
POTASSIUM · 100 G
FIBER · 100 G
1 piece (medium) of Iron supplement (1 g) has 0 calories. That works out to 10 calories per 100 g. It contains 0 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 (medium) · 0.5 g
0
KCAL / 0.5G
Carbs
0g
· 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 0% · Protein 0% · Fat 100%
| Nutrient | Amount | % DV |
|---|---|---|
| Calories | 0 kcal | |
| Total fat | 0 g | 0% |
| Saturated fat | 0 g | 0% |
| Trans fat | 0 g | |
| Sodium | 0.03 mg | 0% |
| Total carbohydrate | 0 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 (medium) | 0.5 g | 0 kcal |
| 1 piece (small) | 0.5 g | 0 kcal |
| 1 piece (medium) | 1 g | 0 kcal |
| 1 piece (large) | 2 g | 0 kcal |
| 2 piece (small) | 2 g | 0 kcal |
| 1 teaspoon (medium) | 3 g | 0 kcal |
| 1 serving (medium) | 5 g | 1 kcal |
| 1 pack (medium) | 30 g | 3 kcal |
| 100 g | 100 g | 10 kcal |
Calculated from 10 calories per 100 g.
Yes, an iron supplement is usually absorbed better on an empty stomach. If it upsets your stomach, take it with a small amount of food; avoid taking it at the same time as tea, coffee, or dairy.
Avoid taking an iron supplement alongside tea, coffee, calcium supplements, or antacids, as they can reduce iron absorption. Leave a gap between them where possible, rather than washing your dose down with tea or coffee.
An iron supplement may ease symptoms such as fatigue within a few weeks, but replenishing iron stores often takes longer. Feeling better does not necessarily mean your iron stores are restored, so follow the planned course.
Yes, constipation is a common side effect of an iron supplement. Drinking enough water and eating fibre-rich foods may help; if constipation is troublesome, the formulation or dose may need to be reviewed.
Yes, an iron supplement can turn stool dark green or black because some iron remains unabsorbed. This is a common effect and does not by itself mean the supplement is causing harm.
It can be. Vitamin C may improve iron absorption, so taking an iron supplement with a vitamin-C-rich food or drink, such as citrus fruit, is a practical option; high-dose vitamin C is usually unnecessary.
Yes, nausea can occur with an iron supplement, especially on an empty stomach. Taking it with a small meal may help, although food can reduce absorption somewhat; avoid taking it with calcium-rich foods.
The right daily amount depends on your iron levels, the reason for taking it, and the product’s iron content. Follow the dose set by your healthcare professional rather than choosing a high-dose supplement yourself.
Yes, iron can reduce the absorption of levothyroxine and some antibiotics, including tetracyclines and quinolones. They generally need to be taken at separate times; the required interval varies by medicine.
No, an iron supplement does not directly cause weight gain. It provides no meaningful source of energy at usual doses, though digestive side effects such as constipation or nausea can temporarily affect how you feel.
Vitamins
Vitamin A
0µg · 0% DV
B1
0mg · 0% DV
B2
0mg · 0% DV
B3
0mg · 0% DV
Minerals
Iron
0.3mg · 2% DV
Magnesium
0.01mg · 0% DV
Sodium
0.03mg · 0% DV
Calcium
0.01mg · 0% DV
Potassium ⭐
0mg · 0% DV
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
An iron supplement is a product formulated to add iron to the diet, commonly sold as tablets, capsules, drops or liquid. It is not a meal or a general-purpose multivitamin; the form and amount of iron vary between products.
People take iron supplements with water, following the label or advice from a doctor or pharmacist. Their nutritional role is to provide iron rather than energy, and they contribute little to a meal’s flavour or texture. Tea and coffee are often part of daily routines in many countries, but it can be practical to take a supplement at a different time if the product instructions recommend it. Store it securely, especially around children.
Very high
How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.
Medium
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 3
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
✓ Suitable
Paleo
✓ Suitable
Whole30
— Not suitable
DASH
— Not suitable
Keto
✓ 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.