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Fruits

Grapefruit Nutrition Facts

Grapefruit is a tangy citrus fruit known for its bitter-sweet flavor and potential metabolic benefits. Pink and red varieties contain lycopene, while all types are rich in vitamin C and unique compounds called furanocoumarins that can interact with medications.

Nutrition Facts

Per 100g serving

Calories42
% Daily Value*
Total Fat
0.1g0%
Saturated Fat
0.0g0%
Trans Fat
0.0g
Polyunsaturated Fat
0.0g
Monounsaturated Fat
0.0g
Cholesterol
-0%
Sodium
-0%
Total Carbohydrate
10.7g4%
Dietary Fiber
1.6g6%
Total Sugars
6.9g
Protein
0.8g2%
Vitamin A
1150mcg128%
Vitamin C
31.2mg35%
Vitamin D
-0%
Vitamin E
0.1mg1%
Vitamin K
-0%
Vitamin B6
0.1mg3%
Vitamin B12
-0%
Folate
13mcg3%
Calcium
22mg2%
Iron
0.1mg0%
Potassium
135mg3%
Magnesium
9mg2%
Zinc
0.1mg1%
*The % Daily Value (DV) tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Health Benefits

  • ✓Good source of vitamin C (52% DV per half)
  • ✓Pink/red varieties contain lycopene
  • ✓Low calorie with high water content
  • ✓Contains naringenin with potential metabolic benefits
  • ✓May support hydration and appetite control

Best For

Eating fresh for breakfastAdding segments to saladsJuicing freshBroiling with honey for dessertMaking citrus cocktails

Storage

Store at room temperature for about a week or refrigerate for 2-3 weeks. Keep away from other produce as citrus can transfer flavors. Cut grapefruit keeps 2-3 days refrigerated.

Serving Sizes

1/2 medium grapefruit52 cal
1 medium grapefruit103 cal
1 cup sections97 cal
1/2 large grapefruit70 cal
Quick Calorie Lookup

Frequently Asked Questions

Why does grapefruit interact with medications?

Grapefruit contains furanocoumarins that inhibit CYP3A4 enzymes in the intestine, affecting how the body processes many medications. This can increase drug levels dangerously. Common interactions include statins, blood pressure meds, and some antihistamines. Always check with your pharmacist.

Is pink or white grapefruit healthier?

Pink and red grapefruits contain lycopene (the antioxidant in tomatoes), which white grapefruit lacks. Pink varieties also tend to be slightly sweeter. Nutritionally, all are excellent sources of vitamin C; pink just offers the added lycopene benefit.

Does grapefruit help with weight loss?

Some studies suggest grapefruit may have modest metabolic benefits, but it's not a miracle weight loss food. Its high water content, fiber, and low calories make it a filling, healthy choice. The 'grapefruit diet' is not supported by strong evidence.

Track Grapefruit with CalorieGram

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