Fisetin by NatuGena – This formula combines selected plant-based compounds and vitamin B3 in a single product, including fisetin, spermidine, quercetin, green tea extract with EGCG, trans-resveratrol, L-theanine, and vitamin B3. 90 vegan capsules for a 30-day supply.
- Fisetin: A plant pigment from the flavonoid group, naturally found in strawberries, apples and tomatoes
- Spermidine: A naturally occurring polyamine compound, sourced here from wheat germ
- Quercetin: A polyphenol from the Japanese pagoda tree (Sophora japonica)
- Green tea extract: Provides natural EGCG, a key catechin in green tea
- L-theanine: An amino acid found in tea plants, long appreciated in green tea
- Vitamin B3 (nicotinamide): A bioactive and well-tolerated form of niacin
- Made in Germany: Exceptional purity and bioavailability for optimal nutrient uptake

More than ever, people today are asking how they can lead active, fulfilling lives in the long term. It's not just about living longer, but about maintaining vitality, performance and joy in life as we age. In the plant world, secondary plant compounds serve a variety of protective functions, like attracting pollinators, repelling pests, or shielding against UV radiation. It's no surprise that scientific interest in how these compounds might also benefit human health is growing.
What makes fisetin a special plant compound?
Fisetin belongs to the flavonoid family of polyphenols. It is found in the smoke tree, which is also known as “fisetinwood”, from which its name is derived. Although present in fruits and vegetables like strawberries, mangos and apples, it naturally occurs only in small amounts. As a polyphenol, fisetin is produced by plants to help protect against environmental stressors.

Why are quercetin, spermidine and resveratrol included in the formula?
The formula is based on the synergistic effects of several natural substances. Quercetin is derived from Sophora japonica, a plant traditionally known for its high flavonoid content. Spermidine is a naturally occurring compound found in all living cells, and in foods such as wheat germ, legumes and mushrooms. In this product, it is sourced from wheat germ extract. Trans-resveratrol is extracted from Japanese knotweed, a plant known for its particularly high resveratrol content.
What does green tea extract provide – and why is L-theanine included?
Green tea is naturally rich in beneficial compounds, including the catechin EGCG (epigallocatechin gallate), a defining component of green tea. The formula also includes L-theanine, an amino acid naturally found in tea leaves.
What is the function of vitamin B3 in this formula?
Vitamin B3 is included in its bioactive and well-tolerated form, nicotinamide. Niacin contributes to normal energy metabolism, supports the function of the nervous system, helps reduce tiredness and fatigue, and contributes to normal psychological function.