Frequently Asked Questions
What is fisetin and what does it do in the body?›
Fisetin is a natural flavonoid found in strawberries, apples, and onions. It works as a senolytic, meaning it helps clear out senescent or “zombie” cells that contribute to ageing. Fisetin also acts as an antioxidant and anti-inflammatory agent, supporting brain health, skin clarity, and metabolic balance. Studies suggest it may even extend lifespan in animals and promote healthier ageing in humans.
Can I get enough fisetin from food alone?›
Not really. While strawberries are a good source (around 160 mg per 100 g), you’d need to eat 300–500 grams daily to match supplement doses like 500 mg. Fisetin in food supports basic health, but for deeper cellular or senolytic benefits, supplementation is usually needed. That’s where high-quality fisetin capsules like those from Decode Age or Renue by Science can help bridge the gap.
Is it safe to take fisetin every day?›
Low doses of fisetin (around 100–200 mg per day) are generally safe and well tolerated. However, higher doses used for senolytic effects (e.g., 1000 mg) should be taken in cycles, not daily. Always talk to a healthcare provider before starting any new supplement, especially if you're combining fisetin with other antioxidants like quercetin.
What is the difference between fisetin and quercetin?›
Both are flavonoids with antioxidant and anti-inflammatory properties, but fisetin is a stronger senolytic. Quercetin is better known for immune support and allergy control, while fisetin targets ageing cells more directly. Some supplements, like Decode Age’s SeneVit, combine both for enhanced results—clearing senescent cells and supporting overall longevity.
