Evaluation of Perceived Stress and Sleep Improvement With the Dairy Bioactive Lactium®

Abstract

Objectives To evaluate Lactium® perceived effectiveness in reducing symptoms related to stress and anxiety, a consumer study has been performed. The satisfaction data has been objectivize using scientific validated questionnaires. Methods This consumer study has been performed in three countries: France (n = 122), USA (n = 111) and China (n = 105) with subjects suffering of moderate stress and sleep disorders. Lactium® 300 mg has been taken for 1 month, before bedtime. Satisfaction survey and three validated questionnaires were used to evaluate the impact of Lactium® on stress and sleep disorders: PSS-10 to assess stress levels, Spiegel questionnaire to estimate the quantity and quality of sleep, and the PSQI to evaluate sleep habits. Results After 1 month of supplementation, the overall satisfaction of the subjects was of 75% for France, 70% for China, and almost 90% for the USA. Lactium® significantly improves stress and sleep in France (73% and 69% of improvement, respectively), China (75% and 76%) and USA (85% and 86%). These results of perceived effectiveness have been confirmed by the results of the scientific validated questionnaires (PSS-10, PSQI and Spiegel questionnaire) showing a significant reduction in stress and sleep disorders. Conclusions After 1 month of treatment, Lactium® significantly improves stress and sleep disorders in subjects suffering of moderate stress and sleep disorders. Four out of five consumers are satisfied by the effectiveness of Lactium®. Funding Sources INGREDIA S.A.

Dietary supplementation with Lactium and L-theanine alleviates sleep disturbance in adults: a double-blind, randomized, placebo-controlled clinical study

“…Two safety indices were assessed during the examination visit and again 8 weeks after the intervention. Moreover, to overcome the uncertainty of treatment efficacy, the intervention period of this study was set to 8 weeks, at least twice as long as that used in previous studies ( 17 , 19 , 24 ) that investigated the short-term efficacy of the product. In addition, a study period of more than 8 weeks was established according to a previously-completed comparative study on Lactium and L-theanin ( 24 ).…”

“…Objective assessments of actigraphy indices revealed more significant increases in sleep efficiency and overall sleep quality in the experimental group than that in the control group ( 17 , 18 ). Moreover, a multinational study reported significant improvements in stress levels and sleep quality within 1 month after supplementation with Lactium ® , with 80% of the participants reporting satisfaction with its effects ( 19 ). L-theanine, chemically known as gamma-glutamyl ethyl amide, is a unique non-protein amino acid that was first discovered in green tea in the mid-20th century.…”