# Arrowhead (Sagittaria latifolia)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/arrowhead
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-30
**Evidence Score:** 2 / 10
**Category:** Herb
**Also Known As:** Sagittaria latifolia, broadleaf arrowhead, wapato, duck potato, Indian potato, swamp potato, arrowleaf, katniss, tule potato, wapatoo

## Overview

Arrowhead (Sagittaria latifolia) is an aquatic plant whose starchy tubers contain complex carbohydrates, primarily amylose and amylopectin, that served as a critical caloric staple for numerous Indigenous North American peoples. The tubers provide readily digestible energy through standard amylase-mediated starch hydrolysis, though no modern clinical studies have evaluated its nutritional or therapeutic properties.

## Health Benefits

• Traditional starchy food source used by Indigenous peoples (traditional use only - no clinical evidence available)
• Potential carbohydrate energy source from tuber consumption (based on botanical description - no nutritional studies available)
• Historical use as sustenance food suggests digestibility (traditional evidence only)
• May provide dietary variety for wild-harvested food enthusiasts (no clinical data)
• Wildlife food source indicates non-toxicity (ecological observation only)

## Mechanism of Action

The primary bioactive constituents in Sagittaria latifolia tubers are complex starches composed of amylose and amylopectin polymers, which are hydrolyzed by salivary and pancreatic alpha-amylase into maltose and glucose for intestinal absorption via SGLT1 and GLUT2 transporters. Minor alkaloids and flavonoids identified in Sagittaria species may theoretically interact with [antioxidant](/ingredients/condition/antioxidant) pathways, though no specific receptor-binding or enzyme-inhibition data exist for this species. No pharmacokinetic studies have characterized absorption, distribution, [metabolism](/ingredients/condition/weight-management), or elimination of any specific compound isolated from S. latifolia.

## Clinical Summary

There are currently no published randomized controlled trials, observational studies, or formal nutritional analyses specifically evaluating Sagittaria latifolia in human subjects. Evidence for its use is entirely derived from ethnobotanical records, historical accounts of Indigenous subsistence use, and general botanical descriptions of starch content in aquatic tubers. Proximate nutritional composition data comparable to other starchy tubers such as potato or camas root can be inferred but has not been directly measured or validated for this species. The honest assessment is that S. latifolia remains an understudied wild food with zero clinical evidence base at this time.

## Nutritional Profile

Arrowhead (Sagittaria latifolia) corms (tubers) are primarily a starchy carbohydrate source, compositionally similar to other aquatic tuber vegetables. Approximate macronutrient breakdown per 100g fresh corm (based on proximate analysis of related Sagittaria species and historical botanical records): Carbohydrates: 18–25g (predominantly starch, with small amounts of simple sugars); Protein: 2–4g (relatively higher than most root vegetables, containing essential amino acids including lysine); Fat: 0.1–0.5g (very low); Dietary Fiber: 1.5–3g (mixed soluble and insoluble); Water: 70–78g. Micronutrients identified in Sagittaria species include: Potassium (estimated 400–600mg/100g, comparable to potato); Phosphorus (~80–120mg/100g); Magnesium (~20–35mg/100g); Calcium (~10–20mg/100g); Iron (~0.5–1.5mg/100g, bioavailability moderate, likely reduced by co-occurring phytates); Vitamin C (modest amounts, estimated 5–15mg/100g, heat-labile and largely destroyed by cooking); B-vitamins including thiamine (B1) and niacin (B3) in trace amounts. Bioactive compounds include alkaloids and tannins at low concentrations (specific quantities not clinically quantified); saponins have been reported in Sagittaria genus broadly. Starch bioavailability is high when corms are cooked (traditional preparation method), gelatinizing starch granules and improving digestibility. Raw consumption is not traditional and may reduce nutrient accessibility. No peer-reviewed nutritional analysis specific to S. latifolia has been published as of 2024; values extrapolated from S. sagittifolia (Chinese arrowhead), which has been more formally studied in East Asian food science literature.

## Dosage & Preparation

No clinically studied dosage ranges are available for Sagittaria latifolia. Traditional preparation involved harvesting and cooking the tubers, but specific amounts and standardized preparations have not been studied. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

No formal toxicology studies or adverse event reports exist specifically for Sagittaria latifolia tuber consumption, though centuries of Indigenous use suggest the cooked tubers are generally safe as a food source when properly prepared. Raw tubers may contain mild irritants or antinutritional factors such as oxalates common to aquatic plants, and cooking is traditionally required before consumption. No documented drug interactions have been identified, but individuals on carbohydrate-restricted diets or managing [blood glucose](/ingredients/condition/weight-management) with insulin or oral hypoglycemics should account for its starch content. Pregnancy and breastfeeding safety has not been studied, and wild harvesting carries risks of misidentification with toxic aquatic species.

## Scientific Research

No clinical trials, RCTs, or meta-analyses were found in the available research. The current literature consists only of botanical descriptions and traditional use documentation without any PMIDs or peer-reviewed clinical studies examining health effects or therapeutic applications.

## Historical & Cultural Context

Indigenous peoples of the Americas historically consumed arrowhead tubers as a significant food source, with the plant known as 'wapato' in some regions. The tubers were traditionally harvested from wetlands and prepared as a starchy vegetable, serving as an important carbohydrate source for Native American communities.

## Synergistic Combinations

Other wild-harvested roots, Jerusalem artichoke, traditional starchy tubers, cattail root, wild rice

## Frequently Asked Questions

### What does arrowhead plant taste like and how is it eaten?

Arrowhead tubers are described ethnobotanically as mild and starchy, similar in texture and flavor to a potato or water chestnut when cooked. Indigenous peoples traditionally boiled, roasted, or dried the tubers, as raw consumption is not recommended due to potential irritant compounds. No formal sensory or culinary studies have been published comparing it to other root vegetables.

### Is Sagittaria latifolia safe to eat raw?

Raw Sagittaria latifolia tubers are generally not recommended for consumption, as aquatic plants in this family may contain oxalates or mild alkaloids that can cause oral or gastrointestinal irritation. Traditional preparation universally involved cooking methods such as boiling or roasting to neutralize potential antinutritional factors. No controlled safety studies have quantified the specific irritant compounds or threshold doses in raw S. latifolia.

### How many carbohydrates are in arrowhead tubers?

No published nutritional analysis has formally measured the macronutrient composition of Sagittaria latifolia tubers with laboratory verification. By comparison to structurally similar starchy aquatic tubers, a carbohydrate content of approximately 15 to 25 grams per 100 grams fresh weight may be estimated, but this figure has not been validated for this species. Anyone tracking precise macronutrient intake should treat any listed values as estimates pending formal nutritional research.

### Can arrowhead supplement help with energy levels?

There is no clinical evidence that Sagittaria latifolia in supplement form provides measurable benefits for energy levels beyond what any comparable dietary starch source would supply through standard glucose metabolism. No arrowhead-specific supplements have been evaluated in human trials for fatigue, athletic performance, or energy metabolism outcomes. Its potential contribution to energy intake is entirely caloric in nature, mediated by amylase hydrolysis of its starch content into glucose.

### How do I identify arrowhead plant safely in the wild?

Sagittaria latifolia is identified by its distinctive arrowhead-shaped leaves, three-petaled white flowers, and small corm-like tubers found in shallow freshwater marshes and pond edges across North America. Safe wild harvesting requires caution because toxic aquatic plants such as water hemlock (Cicuta species) share similar habitats and a misidentification can be life-threatening. Consultation with an experienced botanist or foraging guide is strongly recommended before harvesting any wild aquatic plant for consumption.

### Is arrowhead safe for children and the elderly to consume?

Arrowhead tubers are generally considered safe for consumption across age groups when properly identified and prepared, as they have been traditionally consumed by Indigenous peoples for generations. However, elderly individuals and children should ensure tubers are thoroughly cooked to aid digestibility and reduce any potential choking hazard from the starchy texture. Those with difficulty swallowing or digestive sensitivities should consult healthcare providers before consuming wild-harvested arrowhead.

### How does arrowhead compare nutritionally to other starchy tubers like potatoes or taro?

Arrowhead (Sagittaria latifolia) is a starchy tuber similar to potatoes and taro, serving primarily as a carbohydrate source rather than a protein-rich food. Unlike some other tubers, specific comparative nutritional analyses for arrowhead are limited in modern research, though traditional use suggests comparable digestibility and energy content. The main advantage of arrowhead is its availability as a wild-harvested food for those foraging in North American wetland regions.

### What affects the digestibility and nutrient absorption of arrowhead tubers?

Proper cooking significantly enhances the digestibility of arrowhead tubers by breaking down starch structure, making the carbohydrates more accessible for absorption. The tubers should be thoroughly cooked through boiling, roasting, or other heat methods to ensure palatability and reduce any potential compounds that may interfere with digestion. Individual digestive capacity and whether the arrowhead is consumed alone or with other foods may also influence how well nutrients are absorbed.

---

*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
*License: CC BY-NC-SA 4.0 — Attribution required. Commercial use: admin@hermeticasuperfoods.com*