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Your eyes run on energy. Long days and screens drain the supply.
Sight Guard is a once-daily capsule that fuels the cellular energy your retina and optic nerve depend on.* Five evidence-informed ingredients, formulated by a board-certified ophthalmologist.
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- 30-day guarantee
You take care of your heart, your gut, your skin. Few people are told their eyes need fuel too.
The retina is among the most energy-hungry tissues in the body, and it runs on NAD⁺, the molecule at the center of cellular energy. NAD⁺ declines with age.
Most eye vitamins protect. Sight Guard starts upstream, at the energy.
- 300 mgNicotinamide ribosideThe NAD⁺ precursor dose studied in humans.
- NowWhen to startCollege, your 30s, and every decade after. Start whenever you want proactive support.
- 5Evidence-informed ingredientsFull doses. No proprietary blends.
- 1Capsule, once dailyNo regimen. No timing precision.
NAD⁺ powers mitochondria, which power photoreceptors. Supply the precursor and you support the whole energy chain your vision depends on, not just the antioxidant layer on top of it.
Formulated by the physician who takes it himself
I formulated Sight Guard for patients who were doing everything right and still asked what else they could do. These five ingredients are my best clinical judgment for supporting cellular eye health, and I take it myself every morning.
Craig Fishman, MD · Board-Certified Ophthalmologist · Founder & Medical Advisor, NADefense
Our storyFive ingredients. One daily capsule.
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Nicotinamide Riboside
300 mg
NAD⁺ precursorConverts directly into NAD⁺, the molecule at the center of cellular energy production.
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Calcium Pyruvate
400 mg
Cellular respirationFeeds mitochondrial respiration and buffers oxidative stress in ocular tissue.
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Coenzyme Q10
100 mg
Mitochondrial antioxidantDrives the electron transport chain and acts as a lipid-soluble antioxidant.
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Ginkgo Biloba
60 mg
Ocular circulationSupports healthy microcirculation to the optic nerve and retina.
ImportantGinkgo biloba can interact with blood thinners and antiplatelet medicines, and may increase bleeding risk. Talk to your doctor before use if you take one, or if you have surgery scheduled.
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Lutein
10 mg
Macular light filterConcentrates in the macula as a natural light filter and antioxidant.
Other ingredients: vegetable cellulose capsule, microcrystalline cellulose, magnesium stearate (vegetable). No gluten, dairy, soy, artificial colors, or preservatives. Daily Value not established.
How it compares to a typical eye vitamin.
| Feature | Sight Guard | Typical vitamin |
|---|---|---|
| NAD⁺ precursor included | Yes | No |
| Optic-nerve + cellular-energy focus | Yes | No |
| Ophthalmologist-founded | Yes | No |
| Daily dose | 1 capsule | 2 to 4 capsules |
| No fillers or proprietary blends | Yes | Varies |
| Third-party lab tested | Yes | Varies |
| GMP certified · made in the USA | Yes | Varies |
Comparison reflects commonly available eye vitamin formulations as of 2026. Specific products vary. Sight Guard values reflect our published label.
Simple enough to actually stay consistent.
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One capsule daily
No regimen, no multiple pills, no timing precision.
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Take with food
CoQ10 and lutein are fat-soluble, a meal improves absorption.
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Consistency is the goal
Give it at least three months of daily use.
Consult your physician before starting any supplement, particularly if you take prescription medication, are pregnant or nursing, or have surgery scheduled.
What customers are saying.
Questions, answered.
How do I take Sight Guard?
Take one capsule daily with food. Each bottle is a 60-day supply (60 servings). CoQ10 and lutein are fat-soluble, so a meal improves absorption. Consistency matters more than timing: give it at least three months of daily use.
Can I cancel anytime?
Yes. First bottle $47.40, then $63.20 every 2 months. Cancel anytime from your account with no fees. Your first order is also covered by a 30-day money-back guarantee.
When will I notice a difference?
Cellular support builds through daily consistency, not overnight change. We recommend committing to at least three months of daily use. Sight Guard is designed for long-term vision wellness.
How does the subscription work?
First bottle $47.40, then $63.20 every 2 months. Deliveries arrive before you run out. You can skip, pause, or cancel anytime from your account, with no fees.
What if it is not for me?
Your first order is covered by a 30-day money-back guarantee. If you are not satisfied for any reason, contact support for a full refund.
Does Sight Guard replace my eye doctor?
No. Sight Guard is formulated to complement your care, not replace it. Keep your regular eye exams and follow your doctor's guidance.
Who should check with a doctor first?
Ginkgo biloba can interact with blood thinners and antiplatelet medicines, and may increase bleeding risk. Talk to your doctor before use if you take one, or if you have surgery scheduled. Also consult your physician if you are pregnant, nursing, or take prescription medication.
Not satisfied for any reason? Full refund on your first order.
A supplement you can commit to with confidence.
- Cancel anytime
No lock-in, no fees, no hoops.
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Arrives before you run out.
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