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Drug interactions

Fosinopril-hydrochlorothiazide + Succinylcholine

Severity: Moderate

Fosinopril-hydrochlorothiazide 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

Succinylcholine causes a transient rise in serum potassium, which can be harmful when baseline potassium is abnormal. Thiazide-induced hypokalemia may also enhance neuromuscular blockade, and electrolyte disturbances raise arrhythmia risk during anesthesia.

What this interaction means in plain words

Fosinopril-hydrochlorothiazide 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.

Fosinopril-hydrochlorothiazide belongs to Cardiovascular; Succinylcholine belongs to Musculoskeletal.

Evidence level: Low

Why it happens

Thiazide-related potassium and electrolyte disturbance alters the neuromuscular and cardiac response to depolarizing blockade.

What to do

Check serum potassium before elective surgery and correct abnormalities. Monitor neuromuscular function and ECG during anesthesia.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Fosinopril-hydrochlorothiazide with Succinylcholine?

MediHelp rates the interaction as moderate. Fosinopril-hydrochlorothiazide 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. Succinylcholine causes a transient rise in serum potassium, which can be harmful when baseline potassium is abnormal. Thiazide-induced hypokalemia may also enhance neuromuscular blockade, and electrolyte disturbances raise arrhythmia risk during anesthesia.

How serious is the interaction between Fosinopril-hydrochlorothiazide 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 before elective surgery and correct abnormalities. Monitor neuromuscular function and ECG during anesthesia.

What other medicines interact with Fosinopril-hydrochlorothiazide?

MediHelp also lists interactions of Fosinopril-hydrochlorothiazide with, for example, Aliskiren, Dofetilide, Protein a column. The full list is on the Fosinopril-hydrochlorothiazide page.

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