Selenoprotein P Activator from NatuGena – a carefully balanced blend of L-serine, selenium and the bioactive B vitamins B2, B7 and B9. Our formula uses Quatrefolic®, an innovative patented form of folate. 120 vegan capsules for a 30-day supply.
- L-serine: A plant-based amino acid found in many of the body’s proteins
- Quatrefolic®: Patented premium ingredient providing L-methylfolate (L-5-MTHF) bound to glucosamine
- Bioactive B vitamins: Each capsule delivers vitamins B2, B7 and B9 in directly usable, bioactive forms
- Selenium: Provided as sodium selenite for optimal absorption
- Fully vegan: Suitable for vegans and those with specific dietary needs
- Produced in Germany: Exceptional purity and bioavailability for optimal nutrient uptake

NatuGena Selenoprotein P Activator contains a precisely balanced combination of L-serine, selenium and bioactive B vitamins.
What is L-serine and what role does it play in the body?
L-serine is a non-essential, proteinogenic amino acid, meaning the body can produce it itself. Amino acids are structural components of the body’s proteins. L-serine is found in collagen, serine proteases (digestive enzymes) and in the peripheral nervous system.
Because L-serine is closely linked to folate metabolism, we use Quatrefolic® in our formula – a directly bioactive form of vitamin B9.
Why do we use Quatrefolic® as a folate source?
Unlike conventional folic acid, Quatrefolic® provides a fully active form of vitamin B9. This patented compound can be used directly by the body without conversion, making it ideal for supporting cell division and amino acid synthesis.
Quatrefolic® is based on the glucosamine salt of 5-MTHF, which significantly increases water solubility and improves bioavailability. It also allows stable, reliable folate delivery without the conversion losses that can occur with regular folic acid.

What roles do vitamins B2 and B7 play?
The Selenoprotein P Activator uses bioactive forms of the B vitamins, including riboflavin-5-phosphate (vitamin B2) and biotin (vitamin B7).
Both contribute to a normal energy-yielding metabolism and the normal functioning of the nervous system. Vitamin B2 also contributes to the protection of cells from oxidative stress and helps reduce tiredness and fatigue. Biotin contributes to the normal metabolism of macronutrients such as fats, carbohydrates and proteins.
What is the significance of selenium in the body?
In our product, selenium is provided as sodium selenite, a form that is efficiently absorbed. Selenium plays a key role in various biological processes. It contributes to the protection of cells from oxidative stress and supports the normal function of the immune system.
What is Selenoprotein P?
Selenoprotein P is a transport protein produced in the body that distributes and supplies selenium. Its activity depends on adequate selenium levels and on cofactors such as L-serine and specific B vitamins.