Grapefruit juice, 100%, NS as to form
Common food
Photo: Wikipedia
Grapefruit juice is a tart, invigorating citrus beverage with a vibrant, slightly bitter edge and a refreshing, thin liquid texture. Nutritionally, it's a low-calorie powerhouse, providing a significant dose of vitamin C and potassium with minimal fat and protein. Its naturally sweet-tart profile comes from its sugar content, which is balanced by its distinctive acidity.
Calorie split: 6% protein · 84% carbs · 11% fat
↓ Full nutrition💚 Why it's loved
People love grapefruit juice for its bold, zesty flavor that cuts through richness and wakes up the palate. It's a classic breakfast staple and a versatile mixer in cocktails, prized for its unique bittersweet complexity.
⚠️ Watch-outs & how to enjoy it better
The high natural sugar content can cause blood-sugar spikes, especially when consumed without fiber. The acidity can also irritate sensitive stomachs or tooth enamel. To counteract sugar spikes, pair it with a source of protein or healthy fat (like Greek yogurt or nuts) and practice portion control (e.g., a half-cup serving).
Key benefits
- Excellent source of vitamin C (ascorbic acid)
- Good source of potassium for electrolyte balance
- Low in calories and fat
- Contains antioxidants like lycopene and naringenin
- May support hydration due to high water content
🍽️ Popular dishes
🌍 Where it's eaten
💡 Did you know?
Grapefruit juice is a known 'grapefruit-drug interaction' culprit; it contains compounds called furanocoumarins that inhibit the enzyme CYP3A4 in the gut, which can dangerously increase the concentration of certain medications in the bloodstream.
Full nutrition (USDA data · scales with serving)
| Water | 90.4 g |
| Energy | 40.0 kcal |
| Protein | 0.56 g |
| Total lipid (fat) | 0.48 g |
| Carbohydrate, by difference | 8.3 g |
| Fiber, total dietary | 0.20 g |
| Total Sugars | 7.4 g |
| Calcium, Ca | 12.0 mg |
| Iron, Fe | 0.04 mg |
| Magnesium, Mg | 9.0 mg |
| Phosphorus, P | 16.0 mg |
| Potassium, K | 134 mg |
| Sodium, Na | 1.0 mg |
| Zinc, Zn | 0.04 mg |
| Copper, Cu | 0.03 mg |
| Selenium, Se | 0.10 ug |
| Vitamin C, total ascorbic acid | 31.8 mg |
| Thiamin | 0.05 mg |
| Riboflavin | 0.02 mg |
| Niacin | 0.14 mg |
| Vitamin B-6 | 0.01 mg |
| Folate, total | 16.0 ug |
| Folic acid | 0.00 ug |
| Folate, food | 16.0 ug |
| Folate, DFE | 16.0 ug |
| Choline, total | 7.7 mg |
| Vitamin B-12 | 0.00 ug |
| Vitamin B-12, added | 0.00 ug |
| Vitamin A, RAE | 2.0 ug |
| Retinol | 0.00 ug |
| Carotene, beta | 20.0 ug |
| Carotene, alpha | 2.0 ug |
| Cryptoxanthin, beta | 1.0 ug |
| Lycopene | 0.00 ug |
| Lutein + zeaxanthin | 10.0 ug |
| Vitamin E (alpha-tocopherol) | 0.22 mg |
| Vitamin E, added | 0.00 mg |
| Vitamin D (D2 + D3) | 0.00 ug |
| Vitamin K (phylloquinone) | 0.00 ug |
| Alcohol, ethyl | 0.00 g |
| Caffeine | 0.00 mg |
| Theobromine | 0.00 mg |
Fat & fatty acid profile (per 100g)
| Fatty acids, total saturated | 0.08 g |
| SFA 4:0 | 0.00 g |
| SFA 6:0 | 0.00 g |
| SFA 8:0 | 0.00 g |
| SFA 10:0 | 0.00 g |
| SFA 12:0 | 0.00 g |
| SFA 14:0 | 0.00 g |
| SFA 16:0 | 0.08 g |
| SFA 18:0 | 0.01 g |
| Fatty acids, total monounsaturated | 0.09 g |
| MUFA 16:1 | 0.01 g |
| MUFA 18:1 | 0.08 g |
| MUFA 20:1 | 0.00 g |
| MUFA 22:1 | 0.00 g |
| Fatty acids, total polyunsaturated | 0.17 g |
| PUFA 18:2 | 0.14 g |
| PUFA 18:3 | 0.04 g |
| PUFA 18:4 | 0.00 g |
| PUFA 20:4 | 0.00 g |
| PUFA 20:5 n-3 (EPA) | 0.00 g |
| PUFA 22:5 n-3 (DPA) | 0.00 g |
| PUFA 22:6 n-3 (DHA) | 0.00 g |
| Cholesterol | 1.0 mg |
Amino acid profile (per 100g)
Estimated from Grapefruit, sections, canned, juice pack, solids and liquids — USDA does not publish this profile for Grapefruit juice.
| Tryptophan | 0.01 g |
| Threonine | 0.01 g |
| Isoleucine | 0.01 g |
| Leucine | 0.01 g |
| Lysine | 0.02 g |
| Methionine | 0.01 g |
| Cystine | 0.01 g |
| Phenylalanine | 0.04 g |
| Tyrosine | 0.01 g |
| Valine | 0.01 g |
| Arginine | 0.08 g |
| Histidine | 0.01 g |
| Alanine | 0.02 g |
| Aspartic acid | 0.13 g |
| Glutamic acid | 0.18 g |
| Glycine | 0.01 g |
| Proline | 0.06 g |
| Serine | 0.03 g |
FAQ
Is grapefruit juice high in sugar?
Yes, it contains about 7.4g of sugar per 100g, which is naturally occurring. While it's lower in sugar than many fruit juices, it's still significant, so moderation is key.
Can I drink grapefruit juice if I'm on medication?
You must consult your doctor or pharmacist. Grapefruit juice can interact with many common medications (like statins, blood pressure drugs, and some antidepressants) by affecting how they are metabolized, potentially leading to dangerous side effects.
What's the difference between grapefruit juice and orange juice?
Grapefruit juice is typically more bitter and tart, with a lower sugar content and a distinct, slightly floral aroma. Orange juice is generally sweeter and more acidic in a different way, with a broader, more familiar citrus flavor.
Nutrient density (calculated · NRF9.3)
Nutrient Rich Foods index: beneficial nutrients (protein, fiber, vitamins, minerals) minus saturated fat, added sugar & sodium, per 100 kcal.
NRF9.3 index — Fulgoni, Keast & Drewnowski, 2009. Computed from USDA nutrients.
Weight-loss friendliness (composite index)
Energy density 0.40 kcal/g · 6% calories from protein · 0.2 g fiber · 7.4 g sugar per 100 g.
Composite of energy density (Rolls et al., 1999), protein & fiber satiety, minus sugar. A calculated heuristic — ranks satiety-per-calorie, not a clinical measure.
Dietary load (calculated from USDA values)
Potential renal acid load. Positive = acid-forming, negative = alkaline-forming.
Sodium-to-potassium ratio: 0.01 (lower is better — aim for ≤ 1)
Sodium:potassium per WHO potassium guidance. Computed from USDA nutrients.