Best Life Extension Fisetin Supplements in 2026

BALANCED IMMUNE SYSTEM: Quercetin is a naturally occurring free radical scavenger that supports healthy seasonal immune system function. Laboratory studies have demonstrated that quercetin can also help to promote normal respiratory function.

WITH BROMELAIN: Bromelain has a long history of use by herbalists and is known to help support a balanced immune system response to environmental challenges.

CLASSIFICATIONS/CERTIFICATIONS: Kosher, non-GMO, soy free, vegan/vegetarian, nut free, made without gluten, dairy free, egg free

High concentrated 95% pure quercetin capsules. Natural soy-free sophora japonica source. Highest bioavailable dihydrate form. Rich source of antioxidants and flavonoids.

240 capsules per bottle. 2 capsule serving size. 1,000mg dose with 500mg per capsule. Up to a 4-month supply.

A natural herbal ingredient that provides important phytonutrients for promoting year round immune support in both men and women.

Supports Antioxidant Status: Quercetin is a phenolic antioxidant found in green leafy vegetables, onions, apples and cherries.

Cardiovascular Health: Quercetin supports cardiovascular health by supporting blood vessel endothelial cellular integrity and function.

Immune Health: Quercetin has been shown to be one of the most bioactive flavonoids that supports a healthy immune system response.

Note: LID COLOR MAY VARY: Because of supply chain issues, you may receive a non-embossed black lid instead of the typical blue lid. The product inside is exactly the same.

NEW Size: 90 Caps of this powerful LifeExtension Trans Resveratrol Supplement 250 mg

PROMOTES "youthful gene expression". Encourages healthy mitochondrial function. Supports a healthy inflammatory response.

Immune health – Quercetin is a flavonoid found in plants like apples. It promotes a healthy immune response in the face of seasonal immune challenges, which makes it the perfect addition to your stay-healthy regimen. Quercetin also helps inhibit oxidative stress.

Cardiovascular health – This ability to inhibit oxidative stress (as well as promote a healthy inflammatory response) makes quercetin good for your cardiovascular system. It encourages endothelial health and with it, helps maintain healthy blood pressure already in normal range.

Superior absorption – So why is it that quercetin isn’t more popular. It’s because this nutrient is difficult for your body to absorb. Our Bio-Quercetin formula integrates quercetin into a phytosome—a tiny sphere made out of plant-based lipids (think sunflower seed oil). This makes our quercetin up to 50 times more bioavailable than standard quercetin.

HEALTH BENEFITS OF RED WINE WITHOUT CALORIES - Resveratrol from red grapes is one possible contributor to the potential health benefits of moderate red wine consumption. Our Optimized Resveratrol formula contains trans-resveratrol, the form abundant in red wine and associated with beneficial biological effects, with complementary plant compounds. Together, these ingredients promote the expression of genes associated with healthy aging.

SUPPORT YOUR HEART & MORE - One way that resveratrol can promote heart health is by helping to shield your cells from oxidative stress. By inhibiting oxidative stress in your cardiovascular system, resveratrol promotes endothelial health and function—an essential component of living a long, healthy life.

WHY WE ADDED QUERCETIN AND FISETIN – Our formula also delivers quercetin and fisetin, botanical compounds that complement resveratrol. These nutrients help inhibit oxidative stress and promote a healthy inflammatory response, among other benefits.

PROMOTE YOUTHFUL CELLULAR FUNCTION – Cellular senescence is a natural part of aging when cells no longer function optimally. They can accumulate over time, affecting the daily function of your healthy cells. But new research indicates that black tea theaflavins and quercetin can make it easier for your body to manage senescent cells.

Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery

EXPERIENCE A REJUVENATION - Senolytic Activator combines black tea theaflavins, the plant-derived flavonoid apigenin and ultra-absorbable forms of quercetin and fisetin to help manage senescent cells and promote systemic rejuvenation in your body.

Helps clear senescent cells—Cellular senescence is a natural part of the aging process in which cells no longer function optimally. Research shows fisetin is a senolytic compound: a nutrient that actively targets senescent cells by encouraging the body’s natural pathways for clearing senescent cells so that newer, healthy cells can flourish.

Healthy cognition and glucose metabolism—Fisetin helps protect the delicate nerve cells in your brain. Fisetin can also help maintain glucose levels within normal range, which is good for everything from your kidneys to your eyes to how you gain or lose weight.

25x more bioavailable than standard formulas—Fisetin is terrific for whole-body health, but it breaks down during digestion. So we combined fisetin with galactomannan fibers from fenugreek seeds to help preserve fisetin through your digestive system, making it up to 25 times more bioavailable than standard fisetin.

BOOST YOUR CELLULAR ENERGY - This novel formula combines PQQ, carnosine, R-lipoic acid, taurine and more to encourage cell energy production. How By encouraging the healthy function of mitochondria—and even the generation of new mitochondria.

Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery

PQQ PROMOTES NEW MITOCHONDRIA - PQQ is a powerful nutrient. It promotes the production of new mitochondria, which help protect mitochondrial DNA. PQQ also helps inhibit oxidative stress at the cellular level. So does R-lipoic acid, another ingredient in this cell-energy formula.

Age Defend Supplement Complex from Clean Nutra - Our 16 in 1 age defense complex comes stacked with the most essential ingredients needed for longevity and wellbeing into our later years. Our blend will not only help support your longevity but will also aid in immune health, and respiratory health.

The Stack You’ve Been Looking For - Don't settle for plain old capsules, powders, or tablets that just have one ingredient. With Clean Nutra, you get 4 full-dose products in one. Our product contains a full equivalent of Fisetin 2500mg, Quercetin 1000mg, Resveratrol 1000mg and Wheat Germ Extract 1000mg.

Introducing the Age Defend Blend - In addition to the 4 full supplements included above, our signature Age Defend blend contains these essential ingredients plus ashwagandha collagen, and more! Our powerful formula offers 18 hand-selected ingredients that have been shown to help your overall wellbeing.