Healthy aging, energy & vitality

of life

Activate the virtuous circle

Quality of life (QOL) is defined as the degree to which an individual is healthy, comfortable and able to participate in and enjoy life events. It’s more than just the absence of disease: it’s a state of complete physical, mental and social well-being.“ According to the World Health Organization.

Fiit-ns® is a scientifically-studied combination of polyphenols from botanical extracts, clinically proven to prevent metabolic aging for an enhanced quality of life. Vitamin B3 in Fiit-ns® contributes to increase the feeling of energy while reducing tiredness engendered by active lifestyles.

Polyphenols are bioactive compounds demonstrated to help the body rebalance metabolic functions. 

Fiit-ns® provides 4 complementary subclasses of polyphenols within the flavonoid category: flavanols, flavanones, procyanidins and anthocyanins. 
The combined action of polyphenols from grapefruit, grape, green tea and black carrot with vitamin B3 and low-dose caffeine helps to activate a virtuous circle to reach a better quality of life.

Characterization of the active compounds

Active Compounds

Primary active compounds: 
        Flavonoids                   ≥ 15%

Secondary active compounds: 
        Caffeine                         45 mg
        Vitamin B3                   16 mg


Green tea extract 
Guarana seed extract 
Grape extracts 
Grapefruit extract 
Black carrot extract 

Camellia sinensis (L.) Kuntze
Paullinia cupana Kunth
Vitis vinifera L.
Citrus paradisi Macfad
Daucus carota L.


Recommended daily dosage: 900mg

Science supporting Fiit-ns®


Two clinical studies have been run on Fiit-ns®. Both studies were conducted according to double-blind, randomized, and placebo-controlled protocols.  

Improvement of metabolic function

Fiit-ns® supplementation contributes to a significant improvement of metabolic markers:
  • Lipid profile: significant reduction of triglyceride level (-14%) within 3 months and significant improvement of the HDL-c to LDL-c balance. 
  • Glycemia: significant impact on pre-diabetes markers with a reduction in fasting glycemia (5.7%) and reduction of glycated hemoglobin (13.6%).
  • Oxidative status: significant increase in the level of endogenous superoxide dismutase (30.5%) and reduction in malondialdehyde level (34%).
  • Low-grade inflammation: significant reduction in fibrinogen and high-sensitivity C-reactive protein, the hepatic marker of inflammation.

Improved body composition

Supplementation with Fiit-ns® helps to improve body composition. The index of central obesity (ICO), measured by the ratio of waist circumference to height, is significantly improved; 83% of the fat loss is from the trunk area during the supplementation.

Higher vitality

The International Physical Activity Questionnaire (IPAQ) assesses total physical activity within 4 life domains: 

  • Working
  • Transportation
  • Housework and gardening 
  • Leisure time

The score established in MET-min (Metabolic Equivalent = energy cost of physical activity) represents the level of activity of the subjects measured per week. 

Subjects taking Fiit-ns® are involved in more physical activities than the placebo group.

Health-related quality of life

Overall quality of life of the subjects has been measured with the international referential SF-36. This questionnaire introduces 36 questions classified in 8 domains that describe physical and mental health. 


Physical functioning 
Role limitations (physical) 
Bodily pain 
General health 


Role limitations (emotional)
Social functioning
Emotional well-being 


  • Improves markers of  aging 
  • Increases vitality 
  • Supports engagement  in higher levels of activities
  • Promotes a better quality of life
  • Applications

    Commercial name
    Grape, grapefruit, green tea, black carrot and guarana extracts, vitamin B3

    Flavonoids        ≥ 15%
    Vitamin B3        16 mg
    Caffeine              45 mg

    900 mg/day
    Dietary supplements
    No allergen, non-GMO, halal, gluten-free, suitable for vegans
    Vitamin B3 in Fiit-ns® is necessary to maintain energy and general vitality

    1. Clinical study published in 2014
    Cases J. et al., 2014; International Journal of Food Sciences and Nutrition, “Regular consumption of Fiit-ns®, a polyphenol extract from fruit and vegetables frequently consumed within the Mediterranean diet, improves metabolic aging of obeses volunteers: a randomized, double-blind, parallel trial”
    2. Clinical study published in 2021
    Romain C. et al., 2021; Nutrients, “Sixteen Weeks of Supplementation with a Nutritional Quantity of a Diversity of Polyphenols from Foodstuff Extracts Improves the Health-Related Quality of Life of Overweight and Obese Volunteers: A Randomized, Double-Blind, Parallel Clinical Trial”
    3. EFSA Journal; 2010, 8 (10):1757

    These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
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    This website is intended to provide information about Fytexia’s ingredients, used in various dietary supplement products around the world. It is intended to provide information to food supplement professionals and is not designed for the general public. As Fytexia’s ingredients are being marketed in a large number of countries, it is the responsibility of each of our customers to ensure that the use of the ingredient and any claim made in the labeling or advertising of the ingredient comply with the applicable rules and regulations.