Who we are
The site is written and checked by Quoc Nguyen, MSc, a biology scientist. Quoc Nguyen, MSc, is a biology scientist. He writes and checks the research summaries on this site, reading supplement labels, sales pages and the published studies behind each ingredient, and he explains where the evidence is strong, weak or missing.
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Why this site exists
When people search for Visivra they find a confusing mix of sales pages, press releases and sites calling themselves “official”. We wanted one place that sets out the facts plainly: what is in the product, what the research says about each ingredient, what it costs, how the guarantee works, and where the information is missing.
How we are funded
Some links on this site are paid links. If you buy through them, we may earn a commission at no extra cost to you. That commission funds the site. It does not change what we write: we publish the weaknesses we find, and we do not accept payment for positive coverage. Read our full affiliate disclosure.
Our promises to readers
- We don’t publish fake reviews, star ratings or testimonials.
- We cite independent sources (NIH, NEI, CDC, FDA, EFSA, peer-reviewed research) and open every source before citing it.
- We use careful language about supplements: they may support health; they don’t diagnose, treat, cure or prevent disease.
- We correct mistakes quickly. See our editorial policy.
Contact
Questions about our content? Use our contact page. For orders, shipping or refunds, contact the seller — we cannot access orders.
Frequently asked questions
Is visivras.com/ the official Visivra site?
No. We are an independent review website.
Who writes the content?
Quoc Nguyen, MSc, a biology scientist, writes and checks the content.
*These statements have not been evaluated by the Food and Drug Administration. Visivra is not intended to diagnose, treat, cure, or prevent any disease. This page is general information, not medical advice — talk to your doctor or eye-care professional before starting any supplement, especially if you are pregnant, nursing, take medication or have an eye condition.