Finding synonyms for uncommon medical terms like "erythropoiesis-stimulating agent" can be a tricky task, but doing so can be useful for clearer communication. Some synonyms that might be suitable for this phrase include "erythropoietic agents," "red blood cell boosters," "stimulators of erythropoiesis," and "erythropoietin-stimulating agents." Other terms that might work include "blood enhancers," "RBC-boosting drugs," and "erythroid lineage agents." These terms might not be commonly used, but they can help to make complex medical jargon more digestible for those who might not have a strong background in scientific terminology.