Mylife/Mylife100, a Thai dietary supplement composed of five types of edible plants (Sesamum indicum L., Psidium guajava L., Centella asiatica (L.)Urb., Glycine max (L.)Merr., and Garcinia mangostana L.)was evaluated for its anti‐cancer effect on breast cancer cells with HER2 overexpression (SK‐BR‐3 cell line). This evidence concerns the gene ERBB2 and breast cancer.