iGenics Ingredients: All 12 Clinically Studied Eye Nutrients with Exact Dosages

What Is Lutein and How Does It Support Macular Health?

Lutein is a vibrant yellow-orange carotenoid extracted from marigold flowers that naturally concentrates in the macula lutea — the central region of the retina responsible for sharp, detailed vision and color perception. Together with Zeaxanthin, Lutein forms the macular pigment, a natural internal filter that absorbs harmful high-energy blue light before it can reach and damage underlying photoreceptor cells.

Higher macular pigment optical density (MPOD) is associated with sharper visual acuity, better contrast sensitivity, faster glare recovery, and a lower risk of age-related macular concerns. iGenics provides 20 mg of Lutein per serving from marigold extract, a research-aligned dose that supports meaningful increases in MPOD over time.

Clinical evidence: The landmark AREDS2 trial (Age-Related Eye Disease Study 2), conducted by the National Eye Institute and published in JAMA (2013), confirmed that Lutein and Zeaxanthin supplementation supports long-term macular wellness and retinal integrity. These carotenoids are now considered a gold-standard recommendation for eye health nutrition.

How Does Zeaxanthin Protect the Fovea and Filter Blue Light?

Zeaxanthin is the second critical macular carotenoid. While Lutein is distributed more broadly across the retina, Zeaxanthin is concentrated at the very center of the fovea — the point of sharpest vision. This positioning makes Zeaxanthin the primary blue-light-filtering pigment at the exact focal point where light is most intensely focused.

Together, Lutein and Zeaxanthin work synergistically to build and maintain healthy macular pigment density, which acts as an internal pair of sunglasses for your retina. iGenics delivers 10 mg of Zeaxanthin per serving from marigold extract to complement the 20 mg of Lutein for balanced macular protection.

Clinical evidence: Research published in Nutrients (2017) demonstrated that Zeaxanthin supplementation increases macular pigment optical density and improves critical visual performance metrics including contrast sensitivity and photostress recovery time.

Why Is Zinc Essential for Retinal Function?

Zinc is the most abundant trace mineral in the retina and choroid (the vascular layer beneath the retina). It plays a pivotal role in transporting Vitamin A from the liver to the retina, where it is converted into rhodopsin for dim-light vision. Zinc also supports melanin production in the retinal pigment epithelium and serves as a cofactor for over 300 enzymatic reactions essential for retinal cell metabolism and visual signal processing.

Both the original AREDS and AREDS2 studies included Zinc as a core component of the eye health supplementation protocol, confirming its importance for maintaining macula and retina health. iGenics provides 20 mg of Zinc per serving as Bisglycinate Chelate, a highly absorbable form that research shows is effective for retinal support.

Why Does iGenics Include Copper With Zinc?

High-dose Zinc supplementation can interfere with Copper absorption over time, potentially leading to copper deficiency. iGenics includes 2 mg of Copper as Bisglycinate Chelate to maintain healthy copper levels while delivering 20 mg of Zinc for optimal retinal support. This balanced Zinc-to-Copper approach follows the same principle used in the AREDS2 clinical trial.

Copper also supports collagen synthesis in the eye and contributes to melanin production, while helping form superoxide dismutase — a critical antioxidant enzyme that protects retinal cells from oxidative damage.

How Does Vitamin A Support Night Vision?

Vitamin A is the cornerstone of healthy eyesight. It is indispensable for the production of rhodopsin — the light-sensitive pigment in rod photoreceptor cells that enables you to see in dim-light conditions. Without adequate Vitamin A, the rods cannot regenerate rhodopsin after light exposure, leading to impaired dark adaptation and reduced night vision.

iGenics provides 900 mcg of Vitamin A as Retinyl Palmitate, a preformed vitamin A source that directly supports rhodopsin production and retinal health without requiring conversion. This ensures efficient utilization by the photoreceptor cells that depend on it.

What Role Does Vitamin C Play in Eye Health?

Vitamin C is a powerful water-soluble antioxidant concentrated in the aqueous humor of the eye. It helps protect the lens from oxidative stress and supports the regeneration of other antioxidants like Vitamin E and glutathione. The lens contains one of the highest concentrations of Vitamin C in the body, making this nutrient essential for maintaining lens clarity over time.

Vitamin C also plays a structural role in collagen synthesis, supporting the integrity of the cornea, sclera, and the tiny blood vessels that supply the retina. iGenics provides 500 mg of Vitamin C as Calcium Ascorbate, a gentle, buffered form that is easy on the stomach while delivering full antioxidant benefits.

How Does Vitamin E Protect Retinal Cell Membranes?

Vitamin E is a fat-soluble antioxidant that protects cell membranes from lipid peroxidation — a type of oxidative damage particularly harmful to the photoreceptor cells in the retina, which contain high concentrations of polyunsaturated fatty acids. By neutralizing free radicals before they can attack cell membranes, Vitamin E helps preserve the structural integrity of retinal cells and supports long-term visual health.

The AREDS and AREDS2 trials both included Vitamin E as a core antioxidant component, reflecting its established role in ocular health protection and retinal membrane defense. iGenics provides 0.268 mg of Vitamin E as d-Alpha Tocopheryl Acetate per serving.

What Are the Benefits of Bilberry Extract for Night Vision?

Bilberry Extract is rich in anthocyanins — dark-pigmented flavonoids that enhance night vision, alleviate eye fatigue, and fortify the tiny blood vessels (capillaries) in the retina. Anthocyanins promote microcirculation and stimulate the regeneration of rhodopsin, improving your eyes' ability to adapt to darkness, relieve digital screen strain, and function comfortably in low-light conditions.

iGenics provides 480 mg of standardized Bilberry Extract per serving to deliver meaningful levels of active anthocyanins for retinal microvascular support and visual comfort.

Clinical evidence: A 2015 systematic review published in the Journal of Nutrition, Health & Aging confirmed that bilberry anthocyanins enhance dark adaptation ability and promote retinal microvascular circulation — critical factors for maintaining comfortable, reliable vision as you age.

How Does Turmeric with BioPerine Support Retinal Health?

Turmeric contains curcumin, a polyphenol with potent antioxidant and anti-inflammatory properties. In the context of eye health, curcumin helps modulate inflammatory responses in retinal tissues and protects photoreceptor cells from oxidative stress induced by blue light exposure and aging. iGenics pairs 350 mg of Turmeric Extract standardized to 95% curcuminoids with 20 mg of BioPerine black pepper extract to maximize curcumin uptake.

The 95% curcuminoid standardization in iGenics ensures a high concentration of active compounds. Curcumin also supports healthy blood vessel function throughout the body, including the delicate microvasculature that feeds the retina, while BioPerine enhances absorption so your eyes receive the full benefit.

Clinical evidence: Multiple studies in Investigative Ophthalmology & Visual Science and related journals have demonstrated curcumin's protective effects on retinal cells under oxidative stress conditions, suggesting a role in supporting long-term retinal health and visual function.

What Makes Saffron Extract Beneficial for Macular Function?

Saffron Extract contains two bioactive carotenoids — crocin and crocetin — that have demonstrated remarkable protective effects on photoreceptor cells. These compounds enhance retinal flicker sensitivity (the ability to detect rapid changes in light), improve contrast perception, protect photoreceptors from light-induced damage, and promote healthy macular function.

At 20 mg per serving, iGenics delivers a clinically relevant dose of Saffron extract, making it one of the few vision supplements to include this premium botanical for retinal sensitivity and contrast support.

Clinical evidence: A 2010 study published in Investigative Ophthalmology & Visual Science showed that Saffron supplementation improved retinal flicker sensitivity among individuals with early-stage age-related macular concerns — one of the first clinical demonstrations that dietary saffron can directly benefit macular function and contrast vision.

How Does Ginkgo Biloba Improve Blood Flow to the Eyes?

Ginkgo Biloba is one of the most extensively studied botanical extracts in ophthalmic research. Its primary mechanism for eye health involves improving blood circulation to the optic nerve and retina, enhancing oxygen and nutrient delivery to the cells responsible for transmitting visual signals to the brain.

Ginkgo also contains potent flavonoid glycosides and terpenoids that provide antioxidant protection, reduce platelet aggregation (improving microcirculation), and exhibit neuroprotective effects on retinal ganglion cells. iGenics provides 80 mg of Ginkgo Biloba extract per serving.

Clinical evidence: A study published in the Journal of Glaucoma (2003) demonstrated that Ginkgo Biloba extract supports healthy intraocular pressure levels and increases ocular blood flow, both critical factors for maintaining optic nerve health and preventing damage associated with elevated eye pressure.

What Is BioPerine and Why Is It Added to iGenics?

BioPerine is a patented extract of black pepper standardized to 95% piperine, the active compound responsible for pepper's pungency. Its inclusion in iGenics serves a critical function: enhancing nutrient bioavailability.

Piperine has been clinically shown to increase the absorption of curcumin from Turmeric by up to 2,000%. It achieves this by inhibiting certain metabolic enzymes in the gut and liver that would otherwise break down nutrients before they reach the bloodstream. BioPerine also enhances the absorption of other compounds, including various vitamins and botanical extracts, making the entire iGenics formula more effective. iGenics includes 20 mg of Black Pepper Extract / BioPerine per serving.

Without BioPerine, a significant portion of the curcumin and other nutrients in iGenics would pass through the digestive system unabsorbed. With BioPerine, you receive the full intended benefit of every ingredient in the formula.

Clinical evidence: A landmark 1998 study published in Planta Medica demonstrated that 20 mg of piperine increased curcumin bioavailability by 2,000% in human subjects, establishing the scientific basis for combining black pepper extract with turmeric formulations.