1 cup (medium) of Boiled onion water (240 g) has 10 calories. That works out to 4 calories per 100 g. It contains 2.2 g of carbs, 0.2 g of protein, 0 g of fat and 0.2 g of fiber. Its glycemic index is 10 (low), so it raises blood sugar slowly.

Boiled onion water Nutrition Facts

Selected: 100 g

KCAL / 100G

Carbs

0.9g

· 0% DV

Protein

0.1g

· 0% DV

Fat

· 0% DV

Fiber

0.1g

· 0% DV

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

Calories come from: Carbs 90% · Protein 10% · Fat 0%

Boiled onion water Vitamins & Minerals

Vitamins

0.01mg · 1% DV

Vitamin C

0.8mg · 1% DV

Vitamin A

0µg · 0% DV

0mg · 0% DV

Minerals

Potassium ⭐

18mg · 1% DV

Calcium

2mg · 0% DV

Iron

0mg · 0% DV

Magnesium

1mg · 0% DV

How Nutritious Is Boiled onion water?

Nutrient density

Low

22/ 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

40/ 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.

Boiled onion water Glycemic Index

GLYCEMIC INDEX

Low

0 Low5570100

GLYCEMIC LOAD

0.1

Low

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

How to Burn Off Boiled onion water

To burn the 4 calories in 100 g:

🚶

1min

Walking (5 km/h)

🏃

1min

Running (8 km/h)

🚴

1min

Cycling

🏊

1min

Swimming

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

Is Boiled onion water Processed?

NOVA 2

Minimally 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.

Does Boiled onion water 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 Boiled onion water Good For?

Vegan

✓ Suitable

Vegetarian

✓ Suitable

Gluten-Free

✓ Suitable

Dairy-Free

— Not suitable

Mediterranean

✓ Suitable

Paleo

✓ Suitable

Whole30

— Not suitable

DASH

— Not suitable

Keto

— Not suitable

Low FODMAP

— Not suitable

Boiled onion water Fat Profile

SATURATED

MONOUNSATURATED

POLYUNSATURATED

Compare Boiled onion water

🧅vs☕️

Boiled onion water vs Turkish coffee3 kcal fewer per 100 g

→🧅vs🥛

Boiled onion water vs Ayran33 kcal fewer per 100 g

→🧅vs🧊🍵

Boiled onion water vs Iced Tea16 kcal fewer per 100 g

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Boiled onion water vs Tea3 kcal more per 100 g

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Foods Similar to Boiled onion water

☕️

Turkish coffee

7 kcal

🥛

Ayran

37 kcal

🧊🍵

Iced Tea

20 kcal

🍵

Tea

1 kcal

🥤

Detox Water

2 kcal

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Soda

42 kcal

☕️

Coffee

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Cola

42 kcal

Frequently Asked Questions About Boiled onion water

How is boiled onion water prepared?

It is made by simmering peeled onion in water and straining off the liquid. Boiling it for too long can make the flavour harsh and overly sulfurous.

Can boiled onion water cure a cold?

No. A warm drink may temporarily soothe a sore throat, but boiled onion water does not cure colds or eliminate the infection causing them.

Can honey or lemon be added to boiled onion water?

Yes, both can be added after the drink has cooled slightly, with lemon giving it a fresher taste. Honey may soothe throat irritation, but it must not be given to children under one year old.

When is the best time to drink boiled onion water?

There is no required time of day; it can be enjoyed as a warm beverage whenever it suits you. People with reflux or a sensitive stomach may tolerate it better with or after food rather than on an empty stomach.

Can boiled onion water cause gas or bloating?

Yes, it can. Onion contains fermentable carbohydrates that may trigger gas, cramps, or bloating in some people, particularly those with irritable bowel syndrome.

Is boiled onion water healthier than raw onion?

Neither is automatically healthier; they offer different qualities. Cooking softens onion's flavour but reduces some heat-sensitive compounds, while raw onion retains a sharper flavour and more pungent sulfur compounds.

Can boiled onion water be used instead of antibiotics?

No. Although onion compounds have shown antimicrobial activity in laboratory settings, this drink is not a replacement for prescribed antibiotics when a bacterial infection requires treatment.

How should leftover boiled onion water be stored?

Cool it promptly, transfer it to a covered container, and refrigerate it. For best quality and food safety, use it within 1–2 days and discard it if it develops an off smell or unusual cloudiness.

Can boiled onion water be frozen?

Yes, it can be frozen in small portions. Its flavour may become milder after thawing, so freshly prepared onion water is usually more palatable.

Who should be careful with boiled onion water?

It may worsen symptoms in people with reflux, gastritis, irritable bowel syndrome, or an onion allergy. Anyone taking blood-thinning medication or following regular medical treatment should avoid unusually large amounts without professional advice.

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Nutrition data compiled from USDA FoodData Central and scientific sources.

· Last updated: September 23, 2026