noun
immunostimulant; immunostimulator
Medical term for a substance that activates or enhances the immune system. Often contrasted with 免疫抑制剤 (immunosuppressant).
See also: 免疫抑制剤
この薬は免疫賦活剤として働き、体の防御力を高めます。
This drug works as an immunostimulant and boosts the body's defenses.
An immunosuppressant, which suppresses the immune system, opposite in function to 免疫賦活剤.
Compound of 免疫 (immunity) + 賦活 (activation) + 剤 (agent). The exact historical derivation is uncertain, but the term follows standard medical naming patterns.