Drug interactions
Hydrochlorothiazide + Succinylcholine
Severity: Minor
Hydrochlorothiazide and Succinylcholine: minor 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
Succinylcholine briefly raises serum potassium, whereas hydrochlorothiazide tends to lower potassium and magnesium. Electrolyte disturbance from the diuretic can alter the response to neuromuscular blockers and increase arrhythmia risk. The overall interaction is of limited and variable clinical importance.
What this interaction means in plain words
Hydrochlorothiazide and Succinylcholine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Hydrochlorothiazide belongs to Cardiovascular; Succinylcholine belongs to Musculoskeletal.
Why it happens
Opposing effects on potassium, with thiazide-induced electrolyte depletion altering neuromuscular and cardiac excitability.
What to do
Check potassium and magnesium before elective surgery and replace deficits. Monitor ECG and neuromuscular function during use.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Succinylcholine
Other interactions of Hydrochlorothiazide
Frequently asked questions
Can I take Hydrochlorothiazide with Succinylcholine?
MediHelp rates the interaction as minor. Hydrochlorothiazide and Succinylcholine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Succinylcholine briefly raises serum potassium, whereas hydrochlorothiazide tends to lower potassium and magnesium. Electrolyte disturbance from the diuretic can alter the response to neuromuscular blockers and increase arrhythmia risk. The overall interaction is of limited and variable clinical importance.
How serious is the interaction between Hydrochlorothiazide and Succinylcholine?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check potassium and magnesium before elective surgery and replace deficits. Monitor ECG and neuromuscular function during use.
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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