Collection: Polyphenols

Polyphenols are the compounds that give plants their color, their bitterness and much of their resilience against sun and stress. More than eight thousand have been identified, and a handful have become central to longevity research because they do something unusual: beyond acting as antioxidants, they interact with the signaling pathways that govern how cells age. The Welzo Ultra Purity Polyphenols collection offers the most studied of these compounds at verified purity, so the dose on the label is the dose that reaches you.

What makes polyphenols different from ordinary antioxidants

A standard antioxidant neutralizes free radicals and is spent. Polyphenols do that too, but their main interest to researchers lies elsewhere. Resveratrol is studied for activating sirtuins, the NAD+-dependent enzymes involved in cellular maintenance. Fisetin is studied as a senolytic. Luteolin interacts with microglia and neuroinflammation pathways. Apigenin binds GABA receptors and is studied as a senomorphic. In other words, polyphenols are signaling molecules as much as protective ones, which is why they sit at the intersection of Antioxidants and Longevity & Healthy Aging.

Polyphenols in this collection

• Trans-Resveratrol (98% purity): the stilbene from grape skins and Japanese knotweed, and the polyphenol most frequently paired with NMN. The trans isomer is the biologically active form.
• Fisetin Pro 500mg (98% purity): a flavonol found in strawberries, identified in screening studies as one of the most potent natural senolytics. See Senolytics.
• Neuronot Luteolin 500mg (98% purity): a flavone found in celery and parsley, studied for brain health and cellular maintenance.
• Apigenin: the chamomile flavone, formulated for sleep and studied for suppressing senescence-associated signaling.
• NMN & Resveratrol Stack: the classic longevity pairing of an NAD+ precursor with the polyphenol studied for sirtuin activation.

Absorption: the polyphenol problem

Polyphenols are notoriously poorly absorbed and rapidly metabolized. Three things improve the odds. Purity: a 98% extract delivers roughly ten times the active compound of a 10% extract in the same capsule. Fat: most flavonoids are better absorbed with a meal containing fat. Piperine: black pepper extract is studied for slowing the metabolism of resveratrol in particular, which is why Welzo's Longevity Elite formula includes it. Welzo states purity on every label so you can compare on the number that matters.

How to choose

Trans-resveratrol is the natural starting point and the polyphenol with the deepest research record; most customers take it daily alongside NMN from NAD+ Boosters. Fisetin is usually taken intermittently as a senolytic pulse. Luteolin suits customers focused on brain health, and apigenin suits those who want a polyphenol that also supports sleep. All four can be combined.

Why Welzo Ultra Purity

Welzo is a UK-founded health company trusted by more than 200,000 customers and backed by over 27,000 five-star reviews across the Welzo platform. Every polyphenol here is manufactured to GMP standards, independently third-party tested for purity and potency, and supplied in vegan capsules with no fillers, binders or artificial colors. Batch certificates of analysis are available to verify the stated purity.

Frequently asked questions

What is the difference between resveratrol and trans-resveratrol?

Resveratrol exists in two forms. Trans-resveratrol is the stable, biologically active isomer used in research; cis-resveratrol is less active. Welzo supplies 98% trans-resveratrol.

Are polyphenols the same as flavonoids?

Flavonoids are the largest family within the polyphenol group. Fisetin, luteolin and apigenin are flavonoids; resveratrol belongs to a related family called stilbenes.

Can I get enough polyphenols from food?

A colorful diet supplies a broad range, but the doses used in longevity research, hundreds of milligrams of a single compound, are impractical from food alone, which is where standardized extracts come in.

Browse the collection below, or see Herbal & Botanical Supplements for the wider plant-based range.