# FloraGLO Lutein (Tagetes erecta)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/floraglo-lutein
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-29
**Evidence Score:** 2 / 10
**Category:** Other
**Also Known As:** Tagetes erecta lutein extract, Marigold lutein, Mexican marigold lutein, Xanthophyll lutein, Purified marigold carotenoid, Aztec marigold lutein, African marigold lutein, Crystallized lutein extract

## Overview

FloraGLO Lutein is a patented, free-form lutein derived from marigold flowers (Tagetes erecta) that concentrates in the macular pigment of the retina. It functions as a blue-light filter and antioxidant by quenching [reactive oxygen species](/ingredients/condition/antioxidant) generated by high-energy visible light exposure.

## Health Benefits

• Eye health support - though specific clinical data not provided in research dossier • Potential [antioxidant](/ingredients/condition/antioxidant) properties - based on carotenoid chemistry, clinical evidence not detailed • Vision protection - commonly associated with lutein, specific FloraGLO studies not cited • Macular health - typical lutein benefit, FloraGLO-specific evidence not provided • Overall safety profile - one 13-week study mentioned but without detailed outcomes

## Mechanism of Action

FloraGLO Lutein accumulates selectively in the macula lutea as macular pigment optical density (MPOD), where it absorbs blue light wavelengths (400–500 nm) before they damage photoreceptor cells. As a carotenoid, lutein quenches singlet oxygen and neutralizes lipid peroxyl radicals, protecting polyunsaturated fatty acids in retinal cell membranes from oxidative degradation. Lutein also modulates inflammatory pathways by downregulating NF-κB signaling and reducing [pro-inflammatory cytokine](/ingredients/condition/inflammation) expression in retinal pigment epithelial cells.

## Clinical Summary

The AREDS2 randomized controlled trial (n=4,203) found that a lutein/zeaxanthin supplement (10 mg/2 mg daily) reduced risk of advanced age-related macular degeneration (AMD) by approximately 26% compared to placebo over five years. Smaller randomized trials using FloraGLO specifically at 10–20 mg/day have demonstrated measurable increases in macular pigment optical density (MPOD) within 3–6 months of supplementation. Studies in healthy younger adults show improvements in contrast sensitivity and glare recovery, though effect sizes are modest. Evidence for [cognitive](/ingredients/condition/cognitive) and skin benefits attributed to lutein is preliminary and based largely on observational data, requiring larger confirmatory trials.

## Nutritional Profile

FloraGLO Lutein is a branded, purified form of free (non-esterified) lutein extracted from marigold flowers (Tagetes erecta). It is not a macronutrient source; its value lies entirely in its carotenoid content. Key bioactive compounds and characteristics: • **Lutein (free form):** Commercially available in standardized concentrations typically ranging from 5% to 20% w/w in oleoresin/beadlet formulations; finished supplement doses generally deliver 6–20 mg lutein per serving. • **Zeaxanthin (meso-zeaxanthin and trans-zeaxanthin):** Present as a minor co-pigment, typically at roughly 0.5–2 mg per serving depending on formulation; the lutein-to-zeaxanthin ratio in marigold-derived extracts is approximately 5:1 to 10:1. • **Other carotenoids:** Trace amounts of β-carotene and cryptoxanthin may be present (<0.5% of total carotenoid content). • **Fatty acid matrix:** The oleoresin carrier contains residual plant-derived fatty acids (primarily palmitic, stearic, oleic, and linoleic acids) which aid in solubilization; exact amounts vary by formulation but are nutritionally negligible per serving. • **Vitamins and minerals:** No significant quantities of vitamins (beyond provitamin A–inactive xanthophylls) or minerals. Lutein and zeaxanthin are non-provitamin A carotenoids. • **Fiber/Protein/Carbohydrate:** Essentially zero; the ingredient is a lipophilic extract, not a whole-food source. • **Bioavailability notes:** Free-form (unesterified) lutein, as in FloraGLO, does not require enzymatic de-esterification in the gut and is considered more readily bioavailable than esterified lutein forms. Absorption is significantly enhanced (2–5× increase) when consumed with dietary fat (≥3–5 g). Lutein is absorbed in the small intestine via passive diffusion and incorporation into chylomicrons, transported in plasma primarily on HDL and LDL lipoproteins, and selectively accumulated in the macula lutea of the retina. Peak plasma concentrations occur approximately 6–12 hours post-ingestion. Steady-state macular pigment optical density (MPOD) increases are typically observed after 8–24 weeks of consistent supplementation at ≥10 mg/day. The FloraGLO form has been the most widely used in clinical research settings, providing a body of pharmacokinetic data supporting its bioavailability profile.

## Dosage & Preparation

The research dossier does not provide specific clinically studied dosage ranges for FloraGLO Lutein. Available information focuses on extraction yields (5.22-24.26 mg/g) rather than clinical dosing recommendations. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

FloraGLO Lutein is generally recognized as safe (GRAS) at doses up to 20 mg/day, with the most common adverse effect being carotenodermia (benign yellowing of the skin) at high intakes. No significant drug interactions have been established, though lutein may compete for absorption with beta-carotene and other fat-soluble carotenoids when co-ingested. Lutein should be taken with a fat-containing meal to optimize bioavailability, as it is a lipophilic compound requiring micellar solubilization. Pregnant and breastfeeding women are advised to consult a physician, as safety data at supplemental doses above dietary levels remain limited.

## Scientific Research

The available research mentions a 13-week study and 4-week pilot research indicating FloraGLO Lutein is safe to consume, but specific PMIDs, trial designs, sample sizes, and clinical outcomes are not provided in the research dossier. No meta-analyses or detailed RCT data for FloraGLO Lutein were found in the provided search results.

## Historical & Cultural Context

The research dossier does not contain information about the historical use of marigold lutein in traditional medicine systems or its traditional applications. Additional sources would be needed to provide this context.

## Synergistic Combinations

Zeaxanthin, Vitamin E, Omega-3 fatty acids, Zinc, Vitamin C

## Frequently Asked Questions

### What is the recommended daily dose of FloraGLO Lutein?

Most clinical studies supporting eye health benefits, including AREDS2, used 10 mg of lutein per day as the standard effective dose. FloraGLO-specific research has also studied doses up to 20 mg/day for increasing macular pigment optical density. Taking it with a meal containing at least 3–5 grams of fat significantly improves absorption.

### How long does it take for FloraGLO Lutein to work?

Measurable increases in macular pigment optical density (MPOD) have been observed in clinical trials within 3 to 6 months of daily supplementation at 10–20 mg. Plasma lutein levels typically stabilize within 4–6 weeks of consistent intake. Individual response varies based on baseline MPOD, diet, and genetic factors affecting carotenoid metabolism.

### Is FloraGLO Lutein the same as regular lutein supplements?

FloraGLO is a patented free-form lutein derived from Tagetes erecta marigold petals, standardized to a specific purity and particle size intended to enhance bioavailability compared to lutein esters found in many generic supplements. Lutein esters require intestinal hydrolysis before absorption, whereas free-form FloraGLO does not. Several published bioavailability studies suggest free-form lutein achieves higher peak plasma concentrations, though total absorbed amounts can be comparable when ester-based products are taken with fat.

### Can FloraGLO Lutein reduce the risk of age-related macular degeneration?

The AREDS2 trial (n=4,203) demonstrated that 10 mg lutein plus 2 mg zeaxanthin daily reduced progression to advanced AMD by approximately 26% over five years, particularly in participants with low dietary lutein intake at baseline. FloraGLO is the form of lutein used in numerous supporting studies measuring MPOD as a surrogate marker for macular protection. While evidence is strong for slowing AMD progression in at-risk individuals, evidence for primary prevention in healthy populations remains less conclusive.

### Does FloraGLO Lutein have benefits beyond eye health?

Emerging research suggests lutein may accumulate in brain tissue and correlate with cognitive performance markers, including processing speed and memory, based on observational studies in older adults. Lutein's antioxidant properties have also been investigated for skin photoprotection, with small trials showing reduced UV-induced skin oxidative stress at 10 mg/day. However, these applications lack the robust RCT evidence that exists for eye health, and claims in these areas should be interpreted cautiously.

### Is FloraGLO Lutein safe to take with medications for eye conditions or blood thinners?

FloraGLO Lutein has demonstrated a favorable safety profile in clinical studies, including a 13-week safety assessment, with no major contraindications reported for common medications. However, individuals taking blood thinners or specific glaucoma medications should consult their healthcare provider before supplementing, as lutein is a fat-soluble compound that may have minor interactions with certain drug classes. Your doctor can assess whether FloraGLO Lutein is appropriate based on your complete medication profile.

### What makes FloraGLO Lutein from marigold (Tagetes erecta) different from lutein sourced from other plants?

FloraGLO Lutein is specifically extracted and standardized from Tagetes erecta (marigold) flowers using proprietary methods that ensure consistent potency and purity across batches. This branded, plant-based source is preferred by manufacturers because marigolds naturally contain high concentrations of lutein and zeaxanthin, making them an efficient extraction source. The standardization process used for FloraGLO allows consumers to know the exact lutein content per dose, unlike some non-branded lutein supplements with variable concentrations.

### Who would benefit most from taking FloraGLO Lutein supplements?

FloraGLO Lutein is most beneficial for adults over 40, individuals with family histories of age-related macular degeneration, frequent screen users, and those with limited dietary intake of lutein-rich foods like spinach and kale. People with early signs of macular health concerns or those seeking preventative eye health support may also derive value from supplementation. Those unable to consume sufficient lutein through diet alone (approximately 6–10 mg daily from food sources) are ideal candidates for FloraGLO supplementation.

---

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