Drug interactions
Cyclopenthiazide + Succinylcholine
Severity: Moderate
Cyclopenthiazide and Succinylcholine: 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
Cyclopenthiazide causes potassium loss, and hypokalemia can change the response to neuromuscular blockers and increase the risk of arrhythmia. Succinylcholine raises potassium transiently, so the combined effect is unpredictable.
What this interaction means in plain words
Cyclopenthiazide and Succinylcholine 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
Thiazide-induced potassium and electrolyte depletion alters neuromuscular excitability and opposes the potassium rise from succinylcholine.
What to do
Check serum potassium and magnesium before surgery and correct deficits. Monitor ECG and neuromuscular function.
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 Succinylcholine
Frequently asked questions
Can I take Cyclopenthiazide with Succinylcholine?
MediHelp rates the interaction as moderate. Cyclopenthiazide and Succinylcholine 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. Cyclopenthiazide causes potassium loss, and hypokalemia can change the response to neuromuscular blockers and increase the risk of arrhythmia. Succinylcholine raises potassium transiently, so the combined effect is unpredictable.
How serious is the interaction between Cyclopenthiazide and Succinylcholine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check serum potassium and magnesium before surgery and correct deficits. Monitor ECG and neuromuscular function.
What other medicines interact with Succinylcholine?
MediHelp also lists interactions of Succinylcholine with, for example, Amikacin, Bacitracin-neomycin-polymyxin, Capreomycin. The full list is on the Succinylcholine page.
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