In the inter-group analysis , in the study product group compared with the placebo group , a significant difference ( t@ study treatment vs. t@ placebo , p = @ ) was observed at t@ in night-time cough score.Considering the intra-group analysis , only the study product group registered a significant improvement from t@ to t@ in both day-time ( t@ vs. t@ , p = @ ) and night-time ( t@ vs. t@ , p = @ ) cough scores.A significant difference , considering the study product , was also found in the following intra-group analyses : day-time scores at t@ vs. t@ ( p = @ ) and at t@ vs. t@ ( p = @ ) ; night-time scores at t@ vs. t@ ( p = @ ) , and at t@ vs. t@ ( p = @ ) .