Moringa leaf extract products represent a promising alternative for treating respiratory infections. Moringa oleifera is a tree rich in various active phytochemicals with multiple health benefits. Antimicrobial property, particularly against pneumonia, is among the reported health benefits. The goal of this study is to investigate in vitro how Moringa leaf extract affects lung cells and fighting respiratory infections, then production of Moringa leaf extract hard candy as functional product. According to the obtained data, no cytotoxic effect was reported during usage of Moringa leaf extract (50, 100, 150, and 200 µg/ml) on W138 cells, and cell viability increased gradually through use of these concentrations. Also, concentrations of 150 and 200 µg/ml Moringa leaf extract showed antimicrobial activity against Klebsiella pneumoniae, Streptococcus pneumoniae, and Candida pneumoniae. According to the results of sensory evaluation on samples of Moringa hard candy, there is no significant difference between the treated samples (A, B, and C) and the control sample. Color ranking good acceptance, especially for samples B and C. Finally, the development of moringa hard candy appears to be a promising preventative product.