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Buy 2 QED products and get SLEEP for free

QED NAD BOOSTER -25%

-20% QED PAUSE

Free shipping in Lithuania on orders over 50 EUR

Use coupon code WELCOME10 for 10% off your first order.

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SCIENCE. NOTHING MORE.

Science-first food supplements for daily wellbeing


No room for interpretation  —

QED seeks proof 

QED (quod erat demonstrandum) means "which was to be demonstrated" in Latin. This abbreviation is traditionally written at the end of a mathematical proof. By choosing this abbreviation as our brand name, we commit to creating only evidence-based products.


What makes QED different

Open formulas

We believe in full transparency—our supplements containno proprietary blends, and wepublicly disclose every ingredientalong with its exact dosage, so you always know what you’re taking and why

Quality standard

All QED supplements are manufactured in a top-tier cGMP-certified production laboratory. Safety assurance Before market release, QED products are tested in an independent laboratory to ensure that final products do not contain hazardous substances or microorganisms.

Harmonized formulas 

The ingredients in QED products are carefully selected to support the body's natural processes through various distinct mechanisms. For example, QED Sleep contains several ingredients supporting evening routine.

EDUCATION AND EMPOWERMENT 

Knowledge is power. We pursue the truth about supplements – what works, what doesn't, and why. Our goal is to empower people to take care of their health by making knowledge-based decisions.

Best ingredients 

In creating QED supplements, we only use substances that have been studied by science, and we source them exclusively from trusted EU manufacturers and distributors with the highest quality certifications.

Scientific Rigor

At QED, every ingredient is backed by publicly available peer-reviewed research, ensuring our supplements are formulated with the latest scientific advancements in mind for maximum support and safety.


QED as a trusted partner 

We strive for our assured quality, transparency, and scientific accuracy to build trust. We want to be a reliable partner to our customers by fulfilling our promises and offering the most important scientific innovations to our clients.

SCIENCE.

NOTHING MORE.

QED Sleep: measurable effect

Our customers who track their sleep using smart devices share insights about noticeable changes in their evening well-being when QED Sleep is included as part of their nightly routine.

The formula contains highly bioavailable magnesium, which contributes to the normal functioning of the nervous systemandhelps reduce tiredness and fatigue.

Quality and Safety is paramount

QED supplements are manufactured in accordance with EU food supplement regulations and tested by independent laboratories to ensure product safety and compliance.