Bisacodyl
Nursing pharmacology study reference (NCLEX-style monograph). Numeric values are standard teaching ranges for study and must be verified against current manufacturer labeling before clinical use. This is educational content, not prescribing guidance.
Bisacodyl (brand name Dulcolax) — Laxative; Stimulant laxative.
Identification
- Therapeutic class: Laxative.
- Pharmacologic class: Stimulant laxative.
Pharmacology
- Mechanism of action: Stimulates colonic motility.
- Onset / peak / duration: PO onset 6 to 12 hours; suppository 15 to 60 minutes.
- Half-life / therapeutic level: Minimal absorption.
Clinical use
- Indications: Constipation, bowel preparation.
- Usual dose, route, frequency: 5 to 15 mg PO or 10 mg rectally.
- Maximum dose / adjustments: Short-term use.
Safety
- Contraindications: Obstruction, acute abdomen.
- Black box warning: None.
- Interactions: Do not take within 1 hour of antacids or milk (premature dissolution of enteric coat).
- Pregnancy / lactation: Used when needed.
- High-alert: No.
Adverse effects
- Common side effects: Cramping, rectal irritation with suppository.
- Serious effects to report: Severe cramping, electrolyte loss with overuse.
- Antidote / reversal: Not applicable.
Nursing process
- Assessment before administration: Bowel pattern.
- Interventions during therapy: Do not crush tablets; separate from milk and antacids.
- Monitor: Bowel movements.
- Evaluation / expected outcome: Bowel movement.
Patient teaching
- Patient teaching: Swallow tablets whole; avoid milk and antacids near dosing.
- Notify provider if: No relief, severe cramping.
- Administration tips: Swallow whole; suppository for faster effect.