Loperamide
ロペラミド
INN: Loperamide
Last updated: 3/14/2026
Mechanism of Action
腸管のオピオイド受容体に作用し、腸管の蠕動運動を抑制して腸内容物の通過時間を延長させます。また、腸管からの水分・電解質の分泌を抑制します。
Acts on opioid receptors in the intestinal wall, inhibiting peristalsis and prolonging intestinal transit time. Also reduces secretion of fluids and electrolytes from the intestinal lining.
Efficacy & Effect Tags
Side Effects
便秘、腹部膨満感、口渇、めまい、悪心。まれにイレウス(腸閉塞)。
Constipation, abdominal bloating, dry mouth, dizziness, nausea. Rarely ileus (bowel obstruction).
Contraindications
細菌性下痢の患者(赤痢菌、サルモネラ等)。2歳未満の小児。潰瘍性大腸炎の急性増悪期。
Patients with bacterial diarrhea (Shigella, Salmonella, etc.). Children under 2 years. Acute exacerbation of ulcerative colitis.