Lion’s mane mushroom and related Hericium species produce beneficial compounds called erinacines that may protect the brain and help with neurological conditions. This study tested how adding glucose and a substance called polysorbate 80 to mushroom cultures affects erinacine production. Interestingly, while polysorbate 80 helped mushrooms grow more, it reduced erinacine levels in most strains, though effects varied by species. The findings could help cultivators choose conditions to grow mushrooms enriched with specific beneficial compounds.