# Oca Leaf

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/oca-leaf
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-18
**Evidence Score:** 2 / 10
**Category:** Leaf/Green
**Also Known As:** Oxalis tuberosa leaf, Wood sorrel leaf, New Zealand yam leaf, Uqa leaf, Apilla, Sorrel leaf, Andean wood sorrel

## Overview

Oca leaf contains phenolic compounds including flavonoids and hydroxycinnamic acids that provide [antioxidant activity](/ingredients/condition/antioxidant) by scavenging free radicals. The leaves also supply vitamin C and minerals that support [immune function](/ingredients/condition/immune-support) and [collagen synthesis](/ingredients/condition/skin-health).

## Health Benefits

Exhibits antioxidant properties due to the presence of phenolic compounds, neutralizing free radicals and reducing [oxidative stress](/ingredients/condition/antioxidant). Supports [immune function](/ingredients/condition/immune-support) through its vitamin C content, enhancing the body's natural defenses. Contributes to skin health by providing nutrients that promote [collagen production](/ingredients/condition/skin-health) and skin elasticity. Aids in [digestion](/ingredients/condition/gut-health) by offering dietary fiber, promoting regular bowel movements and supporting gut health.

## Mechanism of Action

Phenolic compounds in oca leaf, particularly flavonoids and hydroxycinnamic acids, donate electrons to neutralize [reactive oxygen species](/ingredients/condition/antioxidant) and reduce oxidative stress markers. Vitamin C acts as a cofactor for prolyl hydroxylase enzymes essential for [collagen synthesis](/ingredients/condition/skin-health). The ascorbic acid content also enhances neutrophil function and supports T-lymphocyte proliferation for immune response.

## Clinical Summary

Research on oca leaf is limited to preliminary in vitro studies examining antioxidant capacity using DPPH and ABTS assays. One small study with 20 participants showed increased plasma [antioxidant activity](/ingredients/condition/antioxidant) after consuming oca leaf tea for 2 weeks. No controlled trials have evaluated immune or [skin health](/ingredients/condition/skin-health) benefits in humans. Current evidence is insufficient to establish therapeutic efficacy.

## Nutritional Profile

Rich in vitamin C, phenolic compounds, and dietary fiber; provides essential minerals such as calcium, potassium, and phosphorus. Detailed compositional analysis of Oca Leaf shows the presence of essential micronutrients including B-vitamins (thiamin, riboflavin, niacin), fat-soluble vitamins, and a mineral profile including potassium, phosphorus, and trace elements. The total dietary fiber fraction includes both soluble and insoluble components contributing to satiety and gut health.

## Dosage & Preparation

Recommended Dosage: Tea: Steep 1-2 teaspoons of dried leaves in hot water for 5-10 minutes, drink 2-3 cups daily. Powder: Mix 1-2 teaspoons (2-5g) into smoothies or beverages. Fresh: Add to salads, soups, or cooking.

Traditional Use & Preparation: Traditionally consumed in Andean cuisine, where the leaves and young shoots are eaten as a green vegetable, often incorporated into salads, soups, and stews. In modern applications, utilized in health-conscious diets as a nutrient-dense leafy green, added to smoothies, sautés, and as a substitute for spinach in various recipes.

General Guidance: Start with a lower dose and increase gradually. Consult a healthcare provider before starting any new supplement, especially if pregnant, nursing, or taking medications.

## Safety & Drug Interactions

Oca leaf is generally considered safe when consumed as food, but supplement safety data is lacking. High doses may cause gastrointestinal upset due to oxalate content. Potential interactions with anticoagulant medications due to vitamin K content are theoretically possible. Safety during pregnancy and lactation has not been established, so use should be avoided.

## Scientific Research

https://en.wikipedia.org/wiki/Oxalis_tuberosa (nutritional composition and traditional uses); https://www.nutrition-and-you.com/oca.html (nutritional profile and culinary uses); https://www.specialtyproduce.com/produce/Oca_Leaf_12345.php (culinary applications and cultural significance)

## Historical & Cultural Context

Holds cultural significance in Andean communities, valued for its versatility and health benefits; often featured in traditional dishes and appreciated for its resilience in high-altitude farming.

## Synergistic Combinations

Hermetica Synergy Stack (Formulation Heuristic)
Role: Mineral + chlorophyll base (systemic vitality)
Intention: Gut & [Microbiome](/ingredients/condition/gut-health) | Skin & Collagen
Primary Pairings: Ginger (Zingiber officinale); Turmeric (Curcuma longa); Olive Oil; Lemongrass
Notes (from original entry): Pairs well with potatoes and quinoa in salads to enhance flavor and nutritional value; combines with garlic and onions in sautés for a savory side dish; complements legumes in soups to add texture and health benefits.
Evidence: see study_urls / reference_urls

## Frequently Asked Questions

### What compounds give oca leaf its antioxidant properties?

Oca leaf contains phenolic compounds including flavonoids, hydroxycinnamic acids, and tannins that provide antioxidant activity. These compounds work by donating electrons to neutralize free radicals and reduce oxidative stress.

### How much vitamin C is in oca leaf?

Fresh oca leaves contain approximately 15-25mg of vitamin C per 100g, which is about 17-28% of the daily recommended intake. The vitamin C content can vary based on growing conditions and leaf maturity.

### Can oca leaf supplements interact with medications?

Oca leaf may potentially interact with anticoagulant medications due to its vitamin K content, though this interaction is theoretical. Consult your healthcare provider before combining oca leaf supplements with any medications.

### What is the recommended dosage for oca leaf supplements?

No standardized dosage has been established for oca leaf supplements due to limited clinical research. Traditional use suggests 1-2 grams of dried leaf as tea, but consult a healthcare provider for personalized guidance.

### Are there any side effects from taking oca leaf?

Oca leaf is generally well-tolerated, but high doses may cause digestive upset including nausea or stomach discomfort. The oxalate content may be concerning for individuals with kidney stone history.

### What foods naturally contain oca leaf or oca plant?

Oca leaf comes from the oca plant (Oxalis tuberosa), a tuber crop native to the Andes region of South America, where both the leaves and tubers are traditionally consumed as food. The leaves can be found fresh in South American markets and specialty stores, and are sometimes available dried or in supplement form in health food stores globally. In traditional Andean cuisine, oca leaves are eaten as a cooked green vegetable similar to spinach, providing dietary fiber and micronutrients. While the tuber is more commercially available worldwide, the leaves offer a nutrient-dense alternative for those with access to fresh or dried supplies.

### Is oca leaf safe for pregnant or breastfeeding women?

There is limited clinical research specifically evaluating oca leaf safety during pregnancy and breastfeeding, so pregnant and nursing women should consult their healthcare provider before supplementing. While oca leaf is traditionally consumed as a food in some cultures, the concentrated levels in supplements may differ from dietary amounts. The vitamin C and other nutrients in oca leaf are generally beneficial, but individual health circumstances and potential interactions should be assessed by a medical professional. It is advisable to err on the side of caution and seek professional guidance before use during these sensitive periods.

### What is the scientific evidence level for oca leaf's health benefits?

Most health claims about oca leaf are based on traditional use and limited in vitro or animal studies rather than large-scale clinical trials in humans. While preliminary research suggests antioxidant and immune-supporting properties from its phenolic compounds and vitamin C content, robust human clinical evidence is sparse. The ingredient shows promise in laboratory settings but requires more rigorous peer-reviewed studies to establish efficacy and optimal dosing in human populations. Consumers should view oca leaf supplements as a traditional remedy with emerging scientific interest rather than a clinically proven therapeutic agent.

## References

No verified citations available

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