Drug interactions
Fludrocortisone + Succinylcholine
Severity: Minor
Fludrocortisone 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
Corticosteroids given with neuromuscular blocking agents have been linked to acute myopathy and prolonged weakness, mostly in critically ill patients on prolonged therapy. Fludrocortisone has predominantly mineralocorticoid activity, so the myopathy risk is less well established than with glucocorticoids. It can also cause hypokalemia, which alters neuromuscular blockade.
What this interaction means in plain words
Fludrocortisone 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.
Fludrocortisone belongs to Endocrine; Succinylcholine belongs to Musculoskeletal.
Why it happens
Corticosteroid-associated myopathy may add to neuromuscular blockade, and mineralocorticoid-induced potassium loss may change the response to depolarizing blockers.
What to do
Check serum potassium before anesthesia and correct hypokalemia. Monitor neuromuscular function and watch for prolonged weakness after recovery.
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 Fludrocortisone
Frequently asked questions
Can I take Fludrocortisone with Succinylcholine?
MediHelp rates the interaction as minor. Fludrocortisone 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. Corticosteroids given with neuromuscular blocking agents have been linked to acute myopathy and prolonged weakness, mostly in critically ill patients on prolonged therapy. Fludrocortisone has predominantly mineralocorticoid activity, so the myopathy risk is less well established than with glucocorticoids. It can also cause hypokalemia, which alters neuromuscular blockade.
How serious is the interaction between Fludrocortisone 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 serum potassium before anesthesia and correct hypokalemia. Monitor neuromuscular function and watch for prolonged weakness after recovery.
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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