DrFeb
Health Guide

Citrus maxima

Meet **Citrus maxima** (also known as Pummelo or Pomelo), the giant ancestor of the grapefruit that is a nutritional powerhouse in its own right. While often overshadowed by its smaller cousins, this citrus giant is loaded with Vitamin C, powerful antioxidants like naringenin, and potassium. Unlike synthetic supplements, the nutrients in Pummelo work synergistically to support your immune system and metabolic health. Think of it as nature’s sweet, juicy defense system, offering a complex profile of phytonutrients that isolated vitamins simply can't replicate.
Evidence BasedDietary Supplement
Citrus maxima
VERIFIED SOURCE

Bio-Activity Analysis

Antioxidant Capacity (ORAC Value)

SCIENTIFIC DATA VISUALIZATION

Y-Axis
Antioxidant Units
Citrus Fruit →

Health Benefits & Sources

Why You Need It

  • Immune Fortress: It contains an exceptionally high amount of Vitamin C, which is vital for white blood cell function.
  • Heart Health Support: Rich in potassium and flavonoids that help regulate blood pressure and reduce oxidative stress on arteries.
  • Metabolic Balance: The fiber and specific flavonoids in Pummelo may help regulate insulin levels and support healthy weight management.

Deep Dive

Citrus maxima is distinct from the common orange due to its thick rind and distinct phytochemical profile. The primary bioactive compounds here are hesperidin and naringin. These flavonoids are not just antioxidants; they actively reduce inflammation markers in the body. The high fiber content in the flesh (distinct from the juice) aids in digestion and cholesterol management. Essentially, eating the fruit provides a full-spectrum supplement of immunity, heart protection, and digestive aid.

Natural Food Sources

Since Citrus maxima is a fruit, the best way to consume it is fresh. The white pith contains high concentrations of the beneficial flavonoids, so try not to peel it entirely.

Food SourceAmount (per 100g)% Daily Value (Vitamin C)
Pummelo (Citrus maxima)61mg~68%
Pomelo Peel (Dried)HighN/A (Flavonoids)
White Pomelo Flesh36mg~40%

Supplementation

While you can find Pummelo extract capsules (often marketed for weight loss), whole fruit is superior. The fiber helps buffer the sugar absorption. If you are taking medication, stick to the fruit rather than concentrated extracts to avoid dangerous interactions.

Top Food Sources

Fresh Pummelo
Eat raw, white flesh preferred
Pummelo Tea
Steep dried peel/pith
Pummelo Jam
Watch for added sugars
Pummelo Extract
Use with extreme caution re: meds

Frequently Asked Questions

No, but they are closely related. Pummelo is the original species from which grapefruit was hybridized. Pummelo is sweeter, larger, and generally has lower acidity than grapefruit.
The white pith is bitter but packed with antioxidants and fiber. You can blend it into smoothies or steep it in hot water for tea. Avoid the thick green outer rind unless candied.
It is low in calories and high in fiber, which promotes fullness. Some extracts are studied for weight loss, but eating the fruit is a healthy addition to a calorie-controlled diet.
Yes, the fruit is generally safe and provides excellent folate and Vitamin C. However, consult a doctor before taking any concentrated Pummelo supplements.

Safety & Side Effects

⚠️ CRITICAL SAFETY WARNING: If you are taking statins (cholesterol meds), calcium channel blockers (blood pressure meds), or certain psychiatric drugs, consult your doctor immediately. Like grapefruit, Pummelo contains furanocoumarins that inhibit the CYP3A4 enzyme in your gut. This can cause your body to absorb dangerously high levels of medication.

Side Effects: Excessive consumption may cause heartburn or acid reflux due to acidity.

Scientific References

  • [1]He, D., et al. (2019). 'Pummelo fruit (Citrus grandis) extract inhibits tumor growth.' *Molecular Medicine Reports*.
  • [2]Uckoo, R.M., et al. (2012). 'Citrus flavonoids and their potential benefits.' *Journal of Food Science*.
  • [3]Bailey, D.G., et al. (2013). 'Grapefruit-medication interactions.' *Canadian Family Physician* (Applies to Pummelo).