Grapefruit (Citrus paradisi Rutaceae)

Other Names: Paradise Citrus, Forbidden Fruit

First described in the 18th century, grapefruit is believed to be an accidental hybrid from the Caribbean, developed by crossing an orange and a pomelo. Cultivated since 1823 in Florida, the grapefruit tree can grow up to eight meters tall.

Parts for Use

Seeds and Pulp

1. Fruits are harvested from September to spring.
2. Grapefruit seed extract is obtained through a commercial process.

Ingredients

Grapefruit seed extract contains flavonoids, phenolic compounds, amino acids, fatty acids, and vitamins C and E, contributing to its potential antimicrobial properties.

Use in Treatment

Grapefruit is valued for its antimicrobial effects, used to treat bacterial, fungal, viral, and parasitic infections, including colds, flu, sore throats, intestinal infections, and diarrhea. A 2002 Texas study confirmed strong antibacterial activity in commercially produced grapefruit seed extract, though some studies noted the presence of artificial preservatives, raising questions about its natural efficacy. Further research is needed to confirm the antibacterial effects of flavonoids and triterpenoids in organic grapefruit seed extract. Until then, using extracts from organically produced seeds is recommended.

Cultivation

Grapefruit is grown commercially in subtropical climates on various soil types.

Preparation and Dosage

For Internal Use (Infections)

1. Capsules (125 mg dry seed extract): Take one capsule twice daily for the first three days, three capsules daily from days four to ten, and two capsules two to three times daily from days eleven to twenty-eight.
2. Liquid Seed Extract Concentrate: Take two to four drops in a glass of water or juice.

For External Use (Sore Throats, Mouth Infections)

1. Gargling/Rinsing Solution: Add four to twelve drops of liquid extract concentrate to a glass of water.

Warnings

1. Consult a healthcare professional before use.
2. Consult a doctor if taking medications, as grapefruit may enhance the effects of some drugs.
3. Grapefruit seed preparations may irritate the digestive system.