The most commonly reported adverse reactions during treatment with Bisacodyl (Dulcolax) are abdominal pain and diarrhoea.
The following episodes may occur: Immune system disorders: anaphylactic reactions, angioedema, hypersensitivity.
Metabolism and nutrition disorders: dehydration.
Nervous system disorders: dizziness, syncope.
Dizziness and syncope occurring after taking bisacodyl appear to be consistent with a vasovagal response (e.g., to abdominal spasm, defecation).
Gastrointestinal disorders: abdominal cramps, abdominal pain, diarrhoea, nausea, haematochezia (blood in stool), vomiting, abdominal discomfort, anorectal discomfort, colitis, including ischaemic colitis.