血けっ糖とう降こう下か剤ざい

• インスリン

  Insulin is a hormone that lowers blood sugar; 血糖降下剤 is a broader term for any drug that lowers blood glucose, including insulin and oral medications.

• 糖とう尿にょう病びょう

  Diabetes is the disease; 血糖降下剤 is a type of medication used to treat it.

Compound of 血糖 (blood sugar), 降下 (lowering), and 剤 (drug/agent).