In 2021, Ingredia conducted a satisfaction study in collaboration with Mérieux Nutrisciences involving 338 global consumers: 122 people in France, 111 in the United States, and 105 people in China. Participants included men and women aged 30 to 45.
The purpose of this study was to evaluate consumer satisfaction and perceived benefits after 15 and 30 days of supplementation, with a recommended daily dose of 300 mg of Lactium®.
Before and throughout the study, consumers answered several questionnaires:
- PSS-10: Perceived Stress Scale questionnaire
- SPIEGEL and PSQI: Questionnaires on sleep quality and quantity
- Satisfaction Questionnaire
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Stress Management Results:
The study results indicate that 78% of consumers experienced an improvement in their overall well-being.

* p<0.001; Values with different letters are statistically different
Indeed, the PSS-10 questionnaire score decreased in every geographical area (compared to the score before the study), demonstrating an improvement in overall well-being and stress management. The effects of Lactium® are noticeable after 15 days and even more significant after 30 days of supplementation.
- Sleep Improvement Results:
The study results show that sleep disorders were reduced for 77% of consumers.

* p<0.001; Values with different letters are statistically different.
Indeed, the SPIEGEL questionnaire score increased in every geographical area (compared to the score before the study), showing an improvement in sleep quality and quantity. As with stress, the effects are noticeable after 15 days and even more pronounced after 30 days of supplementation.
After 30 days of supplementation with a recommended daily dose of 300 mg of Lactium®, 8 out of 10 consumers were satisfied.
