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Worldmeds

Loperamide

ロペラミド

INN: Loperamide

AntidiarrhealPublished

Last updated: 3/14/2026

Mechanism of Action

JA日本語

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。

ENEnglish

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

JA日本語

便秘、腹部膨満感、口渇、めまい、悪心。まれにイレウス(腸閉塞)。

ENEnglish

Constipation, abdominal bloating, dry mouth, dizziness, nausea. Rarely ileus (bowel obstruction).

Contraindications

JA日本語

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。

ENEnglish

Patients with bacterial diarrhea (Shigella, Salmonella, etc.). Children under 2 years. Acute exacerbation of ulcerative colitis.