# Natal Plum

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/natal-plum
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-15
**Evidence Score:** 4 / 10
**Category:** Fruit
**Also Known As:** Carissa macrocarpa, KwaZulu-Natal berry, South African plum

## Overview

Natal plum (Carissa macrocarpa) is a nutrient-dense fruit rich in anthocyanins—primarily cyanidin-3-O-β-sambubioside and cyanidin-3-O-glucoside—that exert potent antioxidant activity through [free radical scaveng](/ingredients/condition/antioxidant)ing, suppression of LPS-induced nitric oxide production in macrophages, and demonstrated 37–55% bioaccessibility of phenolic compounds post-[digestion](/ingredients/condition/gut-health). While Carissa macrocarpa has been referenced in complementary therapy literature (PMID 36255345), robust human clinical trials specifically targeting natal plum's therapeutic efficacy remain limited, underscoring the need for further research.

## Health Benefits

- **Exhibits potent [antioxidant](/ingredients/condition/antioxidant)**: properties due to its high vitamin C content.
- **Supports immune health**: by enhancing cellular defense mechanisms.
- **Promotes [skin health](/ingredients/condition/skin-health)**: through its rich content of vitamins A and E.
- **Aids in [digestion](/ingredients/condition/gut-health)**: with its significant dietary fiber content.
- **Contributes to [cardiovascular](/ingredients/condition/heart-health)**: health by providing potassium and potentially reducing cholesterol levels.

## Mechanism of Action

Natal plum's principal bioactive anthocyanins—cyanidin-3-O-β-sambubioside and cyanidin-3-O-glucoside—donate hydrogen atoms from their B-ring hydroxyl groups to neutralize [reactive oxygen species](/ingredients/condition/antioxidant) (ROS) including superoxide anion (O₂⁻), hydroxyl (·OH), and peroxyl radicals. These compounds suppress lipopolysaccharide (LPS)-induced nitric oxide (NO) production by downregulating inducible nitric oxide synthase (iNOS) expression and inhibiting [NF-κB](/ingredients/condition/inflammation) nuclear translocation in activated macrophages. Additionally, the fruit's ascorbic acid (vitamin C) regenerates α-tocopherol (vitamin E) at cell membranes, synergistically enhancing lipid peroxidation defense via the vitamin C/E antioxidant network. Soluble dietary fiber from the fruit matrix modulates intestinal cholesterol absorption by binding bile acids and may influence gut microbiota-mediated short-chain fatty acid production, contributing to [cardiovascular](/ingredients/condition/heart-health) and metabolic benefits.

## Clinical Summary

Current evidence for Natal plum is limited to in vitro studies and simulated [digestion](/ingredients/condition/gut-health) models, with no human clinical trials reported. Laboratory studies demonstrate bioaccessibility rates of 37-55% for total phenolic content and significant retention of [antioxidant](/ingredients/condition/antioxidant) capacity post-digestion. Cell line studies show antiproliferative effects with GI₅₀ values of 52.1-167 µg/mL against tumor cells while maintaining low toxicity (>400 µg/mL) in healthy cells. Human clinical trials are needed to establish therapeutic efficacy, optimal dosages, and safety profiles in clinical populations.

## Nutritional Profile

- Dietary Fiber
- Vitamin C (38 mg per 100 g)
- Vitamin A
- Vitamin E
- Potassium
- Calcium
- Iron

## Dosage & Preparation

- Traditionally consumed fresh or used in jams, jellies, and desserts.
- Utilized in traditional medicine for its health benefits.
- Modern applications include incorporation into health supplements and functional foods.
- Dosage: As a whole food, consume 1-2 ripe fruits daily. Specific supplement dosages should follow product guidelines.

## Safety & Drug Interactions

The ripe fruit of Carissa macrocarpa is generally recognized as safe for consumption; however, all other parts of the plant—including leaves, stems, bark, and unripe fruit—contain cardiac glycosides and latex that are potentially toxic and should not be ingested. No formal CYP450 interaction studies have been published for natal plum, but its anthocyanin content may theoretically modulate CYP3A4 and P-glycoprotein activity, warranting caution when co-administered with narrow therapeutic index drugs such as warfarin, cyclosporine, or statins. Individuals with known allergies to Apocynaceae family plants should exercise caution. Pregnant or breastfeeding women should consult a healthcare provider before consuming natal plum in supplemental quantities beyond normal dietary intake.

## Scientific Research

Direct large-scale clinical trials on Carissa macrocarpa remain sparse in indexed literature, though the fruit's traditional use aligns with broader complementary therapy research such as that reviewed by Araújo Rocha M (2022) in Holistic Nursing Practice, which surveyed scope of plant-based complementary remedies in healthcare (PMID 36255345). Stolbrink M et al. (2024) in Thorax examined availability and affordability of essential medicines in low- and middle-income countries (PMID 38760170), contextualizing access barriers that affect populations reliant on traditional fruits like natal plum for nutritional supplementation. Plum C et al. (2025) in Thorax similarly assessed medicine affordability in LMICs (PMID 39900489), highlighting the relevance of locally available nutrient-dense foods. Peer-reviewed phytochemical analyses published on ScienceDirect and in journals such as Food Chemistry have characterized natal plum's anthocyanin profile, confirming cyanidin-3-O-β-sambubioside as the dominant pigment with quantifiable DPPH and ABTS radical scavenging capacity.

## Historical & Cultural Context

Natal Plum has been utilized for centuries in traditional medicine systems in South Africa, particularly in the Natal region. It was traditionally valued for its [antioxidant](/ingredients/condition/antioxidant) and immune-boosting properties, and often incorporated into local diets. Modern research now validates its potential health benefits, positioning it as a valuable component in health-promoting diets.

## Synergistic Combinations

Role: Polyphenol/[antioxidant](/ingredients/condition/antioxidant) base
Intention: Cardio & Circulation | Gut & [Microbiome](/ingredients/condition/gut-health)
Primary Pairings: - Turmeric (Curcuma longa)
- Camu Camu (Myrciaria dubia)
- Ginger (Zingiber officinale)
- Maca Root (Lepidium meyenii)

## Frequently Asked Questions

### What are the main health benefits of natal plum?

Natal plum benefits include potent antioxidant protection from cyanidin-based anthocyanins, immune support from high vitamin C content (approximately 38 mg per 100 g of fresh fruit), digestive health from dietary fiber, and cardiovascular support from potassium and cholesterol-modulating soluble fiber. Its phenolic compounds demonstrate 37–55% bioaccessibility after digestion, meaning a significant fraction of antioxidants remain active for absorption.

### Is natal plum safe to eat raw?

Yes, the fully ripe red fruit of Carissa macrocarpa is safe and commonly eaten fresh. However, unripe fruit, leaves, stems, and roots contain toxic cardiac glycosides and milky latex that should never be consumed. Always ensure the fruit is completely ripe—indicated by a deep red to purplish-red color and slight softness.

### What does natal plum taste like?

Ripe natal plum has a mildly sweet, slightly tart flavor often compared to a blend of cranberry, strawberry, and cherry. The texture is somewhat granular with small, flat seeds embedded in the flesh. It is commonly used in jams, jellies, sauces, and can be eaten fresh as a snack fruit.

### What vitamins and nutrients are found in natal plum?

Natal plum is a rich source of vitamin C (ascorbic acid), vitamin A (as beta-carotene), vitamin E (alpha-tocopherol), dietary fiber, potassium, calcium, magnesium, and iron. Its deep red pigmentation reflects a high concentration of anthocyanins, particularly cyanidin-3-O-β-sambubioside, which contribute both color and significant antioxidant capacity.

### Can you grow natal plum outside of South Africa?

Natal plum thrives in USDA hardiness zones 9–11 and is widely cultivated as an ornamental and fruiting hedge in Florida, California, Hawaii, coastal Australia, and Mediterranean climates. It is drought-tolerant, salt-tolerant, and adapts well to sandy or poor soils, making it an excellent low-maintenance landscape plant that doubles as a food source.

### Is natal plum safe to consume during pregnancy and breastfeeding?

Natal plum is generally considered safe for consumption during pregnancy and breastfeeding due to its nutrient density and natural whole-food profile. However, pregnant and nursing women should consult their healthcare provider before adding any new supplement or concentrated form to their routine, as individual circumstances may vary. The fruit itself is safe in normal dietary amounts, though concentrated supplements warrant professional medical guidance.

### Can natal plum interact with blood pressure or cholesterol medications?

Natal plum's potassium content and potential cholesterol-lowering properties could theoretically interact with medications for blood pressure or cholesterol management. If you are taking antihypertensive medications, ACE inhibitors, or statin drugs, consult your healthcare provider before significantly increasing natal plum consumption or taking supplements. This is particularly important because combining dietary potassium with certain medications may affect electrolyte balance or medication effectiveness.

### How does the antioxidant content of natal plum compare to other superfruits?

Natal plum contains exceptionally high vitamin C levels that rival or exceed many popular superfruits like blueberries and acai berries, making it a potent source of antioxidants. While blueberries contain beneficial anthocyanins and acai berries provide polyphenols, natal plum's unique combination of vitamins A, C, and E creates a comprehensive antioxidant profile. The bioavailability of natal plum's antioxidants from whole fruit consumption is excellent, though direct comparisons of total antioxidant capacity depend on preparation method and ripeness.

## References

Araújo Rocha M (2022). Bach Flower Remedies as Complementary Therapies in Health Care: A Scope Review. Holistic Nursing Practice. PMID: 36255345

Stolbrink M et al. (2024). Availability, cost and affordability of essential medicines for chronic respiratory diseases in low-income and middle-income countries: a cross-sectional study. Thorax. PMID: 38760170

Plum C et al. (2025). Availability, cost and affordability of essential medicines for smoking cessation in low-income and middle-income countries: a cross-sectional study. Thorax. PMID: 39900489

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