1 slice (thin) of Lemon slice (8 g) has 2 calories. That works out to 29 calories per 100 g. It contains 0.7 g of carbs, 0.1 g of protein, 0 g of fat and 0.2 g of fiber. Its 4.2 mg of Vitamin C covers 5% of the Daily Value. Its glycemic index is 20 (low), so it raises blood sugar slowly.

Lemon slice Nutrition Facts

Selected: 100 g

KCAL / 100G

Carbs

9.3g

· 3% DV

Protein

1.1g

· 2% DV

Fat

0.3g

· 0% DV

Fiber

2.8g

· 10% DV

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

Calories come from: Carbs 84% · Protein 10% · Fat 6%

Lemon slice Vitamins & Minerals

Vitamins

Vitamin C

53mg · 59% DV

0.08mg · 5% DV

0.19mg · 4% DV

Biotin

1.1µg · 4% DV

Minerals

Iron

1mg · 6% DV

Potassium ⭐

138mg · 4% DV

Calcium

26mg · 3% DV

Magnesium

8mg · 2% DV

How Nutritious Is Lemon slice?

Nutrient density

High

74/ 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

Medium

53/ 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.

Lemon slice Glycemic Index

GLYCEMIC INDEX

Low

0 Low5570100

GLYCEMIC LOAD

Low

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

How to Burn Off Lemon slice

To burn the 29 calories in 100 g:

🚶

7min

Walking (5 km/h)

🏃

3min

Running (8 km/h)

🚴

4min

Cycling

🏊

3min

Swimming

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

Is Lemon slice Processed?

NOVA 1

Unprocessed

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 Lemon slice 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 Lemon slice Good For?

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

Lemon slice Fat Profile

SATURATED

0.04g

MONOUNSATURATED

0.01g

POLYUNSATURATED

0.09g

Compare Lemon slice

🍋vs🍓

Lemon slice vs Strawberry3 kcal fewer per 100 g

→🍋vs🥑

Lemon slice vs Avocado131 kcal fewer per 100 g

→🍋vs🍑

Lemon slice vs Peach10 kcal fewer per 100 g

→🍋vs🍇

Lemon slice vs Dried Raisins270 kcal fewer per 100 g

→

Foods Similar to Lemon slice

🍓

Strawberry

32 kcal

🥑

Avocado

160 kcal

🍑

Peach

39 kcal

🍇

Dried Raisins

299 kcal

🍎

Apple

52 kcal

🍇

Grapes

69 kcal

🍉

Watermelon

30 kcal

🍍

Pineapple

50 kcal

Frequently Asked Questions About Lemon slice

Does adding a lemon slice to hot tea destroy its vitamin C?

Heat and prolonged standing can reduce some vitamin C. Add lemon once the tea has cooled slightly and drink it reasonably soon to help preserve it.

Why does a lemon slice sometimes make a drink taste bitter?

Bitterness usually comes from the peel oils and the white pith, especially when a slice sits in a drink for a long time. Removing seeds and taking the slice out after infusing can keep the flavor cleaner.

When should I add lemon slices to water?

Add them shortly before drinking for the freshest flavor. If making a pitcher, keep it refrigerated and remove the slices after a few hours to avoid bitterness.

Does lemon water make the body alkaline?

No. Lemon water does not meaningfully change blood pH in healthy people, because the body regulates this very tightly.

Can lemon slices damage tooth enamel?

Frequent or prolonged exposure to lemon acid can contribute to enamel erosion. Using a straw for lemon drinks, rinsing with plain water afterward, and waiting before brushing can help reduce exposure.

How should cut lemon slices be stored?

Keep cut lemon in an airtight container or tightly wrapped in the refrigerator. Use it within a few days for the best freshness, and discard it if it develops mold, an off smell, or excessive drying.

Can lemon slices be frozen?

Yes. Freeze slices in a single layer first, then transfer them to a sealed freezer bag. They become softer after thawing, so they work best in drinks, sauces, and cooking rather than as a fresh garnish.

Why do lemon slices pair so well with fish?

Lemon’s acidity brightens the flavor of fish and cuts through richer, oily notes. Add it just before serving to retain its fresh aroma and avoid changing the fish’s surface texture.

Do lemon slices interact with medications?

Lemons are not known for the same major medication interactions as grapefruit. However, their acidity may aggravate stomach symptoms for some people, so anyone on a specialized treatment should ask a clinician about regular high intake.

Should people with reflux be careful with lemon slices?

Yes. Lemon can trigger heartburn, sour regurgitation, or throat irritation in some people with reflux. Reduce the amount or avoid it if it consistently worsens symptoms.

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Nutrition data compiled from USDA FoodData Central and scientific sources.

· Last updated: August 24, 2026