Fisetin has attracted attention in longevity research for its potential senolytic activity—its ability to target certain senescent, or “zombie”, cells in experimental studies.

Welzo Ultra Purity Fisetin Pro provides 500 mg per two-capsule serving, using fisetin specified at 98% purity. A focused, single-active-ingredient formula for those looking beyond everyday supplementation and taking an informed interest in the science of ageing.

1. Senescent cells: the “zombie cell” connection

Some damaged or ageing cells stop dividing but remain active in the body. Known as senescent cells, they can release inflammatory signals that affect surrounding tissue. Their accumulation is one of the processes scientists investigate when studying ageing.

Fisetin has demonstrated senolytic activity against certain senescent cell types in laboratory research. In mouse studies, it reduced markers of cellular senescence and age-related tissue damage. One study also reported an increase in median and maximum lifespan in mice.

These findings explain why fisetin has become an ingredient of interest in longevity research. They do not establish that Welzo Fisetin Pro clears senescent cells or extends lifespan in people.

2. Oxidative stress and inflammation: another research focus

Oxidative stress occurs when reactive molecules overwhelm the body’s antioxidant defences. Alongside persistent inflammatory signalling, it is an important area of ageing research.

Experimental studies have investigated fisetin’s antioxidant activity, its effects on glutathione—the body’s own antioxidant—and its interaction with inflammatory signalling pathways.

This research explores how fisetin may influence the cellular environment as organisms age. It does not establish a clinically proven anti-inflammatory effect for this supplement.

3. Brain ageing: investigating memory and cellular resilience

Interest in fisetin also extends to the ageing brain.

In laboratory and animal studies, researchers have investigated fisetin’s effects on nerve-cell survival, inflammatory signalling and pathways involved in learning and memory. Studies in ageing mice have reported benefits on selected measures of cognitive function.

These are promising research directions, rather than proof that taking fisetin improves human memory, focus or prevents neurodegenerative disease.

Why choose Welzo Ultra Purity Fisetin Pro?

98% ingredient purity

The fisetin ingredient has a defined purity specification, giving you more information than a milligram amount alone.

500 mg per serving

Every two-capsule serving supplies 500 mg of fisetin. Clear quantities make it easier to compare products and understand your purchase.

One active ingredient

A focused fisetin formula for customers who prefer to select individual ingredients rather than a multi-ingredient blend.

Vegan capsule format

60 vegan capsules provide 30 measured servings, without weighing or mixing a powder.

Batch information available

Review the linked certificate of analysis for the batch identification and reported quality results.

Product details

Frequently asked questions

What is a senolytic?

A senolytic is a substance that can selectively eliminate certain senescent cells. Fisetin is being investigated for this activity, with much of the supporting evidence coming from laboratory and animal research.

How quickly will I notice a difference?

There is no established timeline for noticeable benefits from this product. Changes in energy or focus cannot confirm senolytic activity.

How much fisetin does each capsule contain?

The stated serving is 500 mg across two capsules, equivalent to 250 mg per capsule.

Directions and storage

Follow the recommended intake and warnings on the product label. Do not exceed the stated recommended intake.

Consult a healthcare professional before use if you take medication, have a medical condition, are pregnant or breastfeeding.

Store in a cool, dry place, out of reach of children. Food supplements should not replace a varied, balanced diet and a healthy lifestyle.

An informed approach starts with knowing what you’re taking.

Welzo Ultra Purity Fisetin Pro. Clearly stated strength. Defined ingredient purity.

100% Fisetin (500mg).

• GTIN: 5065026506542
• Manufacturer: Welzo Ultra Purity
• Size: 60 Capsules
• Categories: All Welzo ProductsAnti-Aging & Longevity SupplementsBest SellersPractitioner SupplementsWelzo Ultra PurityWelzo Ultra Purity New Arrivals
• Best buy: 6 - 24 months+

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Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 14 days in the same original and unopened packaging. Subject to T&C's.

Welzo is a UK-based health platform. Orders ship from the UK.

Take as directed on the label. Fisetin is fat-soluble, so it is best taken with a meal containing some fat to support absorption. In research, fisetin has often been given as a higher intermittent dose across a small number of consecutive days rather than continuously (the “hit and run” senolytic approach), though some people take a lower daily amount — the optimal human protocol has not been established, so follow the product packaging and consult a healthcare professional to decide what suits you. Do not exceed the recommended intake. Food supplements should not be used as a substitute for a varied, balanced diet and a healthy lifestyle.

Please consult the product packaging for accurate instructions on how to use the product.

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