Grapefruit
What it is
Grapefruit is a citrus fruit eaten in segments or consumed as juice. This reference describes raw pink, red, and white grapefruit across growing areas.
What it does
For the named reference food, USDA lists 32 kcal, 8.08 g carbohydrate and 1.1 g fiber per 100 g edible portion. The table gives additional nutrients for that same food form. These figures describe composition, not an effect on a disease or a recommended serving.
Research context and ingredient forms
Reference food: Grapefruit, raw, pink and red and white, all areas. These are historical SR Legacy data from the April 2018 release, published in FoodData Central in 2019. A different variety, preparation, water content, or commercial recipe can change the result. For a matching food, a portion estimate scales each value by edible portion grams divided by 100.
Using this information
Whole fruit and strained juice have different fiber profiles. Use the edible fruit portion for this table, and check medication directions before choosing grapefruit.
Considerations
Grapefruit fruit and juice can change the effects of some medicines. Check the medication information or ask a pharmacist; medicines within the same broad class do not all have the same interaction.
Food sources and composition
| Nutrient | Amount and serving basis | Food and source |
|---|---|---|
| Energy | 32 kcal per 100 g edible portion | Grapefruit, raw, pink and red and white, all areas; Grapefruit, raw, pink and red and white, all areas SR Legacy April 2018; FDC published 2019-04-01 |
| Protein | 0.63 g per 100 g edible portion | Grapefruit, raw, pink and red and white, all areas; Grapefruit, raw, pink and red and white, all areas SR Legacy April 2018; FDC published 2019-04-01 |
| Total lipid (fat) | 0.1 g per 100 g edible portion | Grapefruit, raw, pink and red and white, all areas; Grapefruit, raw, pink and red and white, all areas SR Legacy April 2018; FDC published 2019-04-01 |
| Carbohydrate, by difference | 8.08 g per 100 g edible portion | Grapefruit, raw, pink and red and white, all areas; Grapefruit, raw, pink and red and white, all areas SR Legacy April 2018; FDC published 2019-04-01 |
| Fiber, total dietary | 1.1 g per 100 g edible portion | Grapefruit, raw, pink and red and white, all areas; Grapefruit, raw, pink and red and white, all areas SR Legacy April 2018; FDC published 2019-04-01 |
| Calcium, Ca | 12 mg per 100 g edible portion | Grapefruit, raw, pink and red and white, all areas; Grapefruit, raw, pink and red and white, all areas SR Legacy April 2018; FDC published 2019-04-01 |
| Iron, Fe | 0.09 mg per 100 g edible portion | Grapefruit, raw, pink and red and white, all areas; Grapefruit, raw, pink and red and white, all areas SR Legacy April 2018; FDC published 2019-04-01 |
| Magnesium, Mg | 8 mg per 100 g edible portion | Grapefruit, raw, pink and red and white, all areas; Grapefruit, raw, pink and red and white, all areas SR Legacy April 2018; FDC published 2019-04-01 |
| Potassium, K | 139 mg per 100 g edible portion | Grapefruit, raw, pink and red and white, all areas; Grapefruit, raw, pink and red and white, all areas SR Legacy April 2018; FDC published 2019-04-01 |
| Vitamin C, total ascorbic acid | 34.4 mg per 100 g edible portion | Grapefruit, raw, pink and red and white, all areas; Grapefruit, raw, pink and red and white, all areas SR Legacy April 2018; FDC published 2019-04-01 |
Scientific Research & References
- Grapefruit, raw, pink and red and white, all areas
2019 · USDA Agricultural Research Service
Limitations: Historical food/preparation-specific composition. Values can be analytical, calculated or imputed; not a current brand label or clinical-outcome estimate.
Source assessment recorded.
- USDA National Nutrient Database for Standard Reference, Legacy Release: Documentation
2018 · USDA Agricultural Research Service
Limitations: Historical dataset; values may be analytical, calculated, imputed, or assumed zero. Not clinical-outcome evidence.
Source assessment recorded.
- Grapefruit Juice and Some Drugs Don't Mix
U.S. Food and Drug Administration
Limitations: General interaction awareness; does not identify interactions for a particular patient or every drug.
Source assessment recorded.
Related dictionary entries
Products containing it
No label-specific product relationship has been reviewed for this entry.