What is Zeaxanthin?
Zeaxanthin is a carotenoid that protects the eyes from oxidation and light-induced damage. Found in dark green vegetables, orange and yellow fruits, and egg yolks, zeaxanthin is a yellow pigment located at the center of the macula.
As a coexisting lutein isomer, zeaxanthin is synthesized in plants and some microorganisms, providing a distinct yellow color to vegetables and plants like pepper, corn, saffron, and wolfberries.
Zeaxanthin Uses
Zeaxanthin is an eye vitamin that migrates to the lens, macula, and fovea (center spot of the retina) once inside the body. It helps build a yellow pigment shield to protect eye cells from harmful light sources, such as the sun, and protects against dangerous free radicals formed from oxidation. Zeaxanthin, along with lutein, is the only dietary carotenoid that accumulates in the retina, particularly in the macular region, and is known as macular pigments.
Zeaxanthin, along with lutein, is the only dietary carotenoid that accumulates in the retina, particularly in the macular region, and is known as macular pigments.
Zeaxanthin Side Effects
No known side effects or negative interactions with other drugs have been identified. However, exceeding the maximum recommended daily level for adults (10 milligrams) may cause a yellowish skin color in individuals with fair skin.
Dosages
Currently, there is no recommended dietary intake for zeaxanthin. The required amount may depend on stress levels and lifestyle factors, such as smoking. Most people consume about 1 to 3 mg of zeaxanthin per day through their diet, but more may be needed to reduce the risk of eye conditions. Including fat in the diet can improve zeaxanthin absorption.
Zeaxanthin Benefits
- Age-related macular degeneration (AMD): Zeaxanthin and lutein supplementation can protect against AMD progression, which may lead to blindness.
- Cataract: Intake of zeaxanthin and lutein may slow cataract formation.
- Uveitis: Zeaxanthin and lutein may help reduce the inflammatory process in uveitis.
- Diabetic retinopathy: Supplementation with zeaxanthin and lutein may reduce oxidation processes damaging the eyes.
Zeaxanthin vs Astaxanthin
| Zeaxanthin | Astaxanthin |
|---|---|
| A carotenoid that protects the eyes from oxidation and light-induced damage. Found as a yellow pigment in the macula. | A reddish pigment part of the carotenoid group, naturally occurring in certain algae and giving a pink or red color to salmon, trout, lobster, shrimp, and other seafood. |
| Helps build a yellow pigment shield to protect eye cells from harmful light sources like the sun. | Taken orally for Alzheimer’s, Parkinson’s, stroke, high cholesterol, liver disease, age-related macular degeneration, and cancer prevention |
| Most people consume about 1 to 3 mg per day through their diet, but more may be needed to reduce the risk of eye conditions. | An antioxidant that may protect cells from damage and improve immune system functioning. |
Storage
Zeaxanthin should be stored in a cool, dry place away from direct sunlight.
For temporary relief of minor eye redness or discomfort, naphazoline ophthalmic can be used, but avoid if you have narrow-angle glaucoma. Stop use and consult a doctor if you experience continuous or worsening eye redness, eye pain, vision changes, severe dizziness or headache, buzzing in your ears, or shortness of breath.
