Drug interactions
Senna + Sodium sulfate / potassium chloride / magnesium sulfate / polyethylene glycol
Severity: Moderate
Senna and Sodium sulfate / potassium chloride / magnesium sulfate / polyethylene glycol: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Combining senna with a polyethylene glycol–based bowel preparation may increase the risk of colonic mucosal ulceration or ischemic colitis. It may also confound endoscopic assessment.
What this interaction means in plain words
Senna and Sodium sulfate / potassium chloride / magnesium sulfate / polyethylene glycol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Additive stimulant and osmotic effects on colonic motility and mucosa; mechanism not fully established.
What to do
Avoid additional stimulant laxatives during bowel preparation unless the procedural protocol specifies them. Counsel patients to report severe abdominal pain or rectal bleeding.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Senna
- Lily of the valley + Senna Major
- Dichlorphenamide + Senna Moderate
- Digoxin + Senna Moderate
- Senna + Sodium sulfate / ?magnesium sulfate / potassium chloride Moderate
- Deflazacort + Senna Minor
Frequently asked questions
Can I take Senna with Sodium sulfate / potassium chloride / magnesium sulfate / polyethylene glycol?
MediHelp rates the interaction as moderate. Senna and Sodium sulfate / potassium chloride / magnesium sulfate / polyethylene glycol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Combining senna with a polyethylene glycol–based bowel preparation may increase the risk of colonic mucosal ulceration or ischemic colitis. It may also confound endoscopic assessment.
How serious is the interaction between Senna and Sodium sulfate / potassium chloride / magnesium sulfate / polyethylene glycol?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid additional stimulant laxatives during bowel preparation unless the procedural protocol specifies them. Counsel patients to report severe abdominal pain or rectal bleeding.
What other medicines interact with Senna?
MediHelp also lists interactions of Senna with, for example, Lily of the valley, Dichlorphenamide, Digoxin. The full list is on the Senna page.
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