synergistic       
adjective  business, medical specialized uk/sɪn.əˈdʒɪs.tɪk/ us/sɪn.ɚˈdʒɪs.tɪk/
 有协同作用的,有增效作用的
causing or involving synergy (= the combined power of working together that is greater than the power achieved by working separately)
  the synergistic effect of two drugs given at the same time 两种药物同时使用所产生的增效作用 
 See: synergy
 - More examples
 - There is a synergistic effect when agencies work together.
 - It is a combination that creates a synergistic benefit beyond that of either project standing alone.
 - The scientists found that this treatment, when combined with chemotherapy, was synergistic in halting cell growth.
 - I don't agree with nutritional supplements - the body needs the synergistic ratio of organic nutrients found in whole foods.