Drug interactions
Hyoscyamine spray + Succinylcholine
Severity: Minor
Hyoscyamine spray 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
Hyoscyamine spray is an antimuscarinic that opposes succinylcholine's muscarinic effects, such as bradycardia and increased secretions. It has little effect on the neuromuscular blockade itself, and the combination is usually well tolerated.
What this interaction means in plain words
Hyoscyamine spray 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.
Why it happens
Muscarinic receptor blockade counteracts the muscarinic effects of succinylcholine, with no important effect on nicotinic transmission.
What to do
No dose change is needed. Monitor heart rate and watch for additive anticholinergic effects.
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
Frequently asked questions
Can I take Hyoscyamine spray with Succinylcholine?
MediHelp rates the interaction as minor. Hyoscyamine spray 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. Hyoscyamine spray is an antimuscarinic that opposes succinylcholine's muscarinic effects, such as bradycardia and increased secretions. It has little effect on the neuromuscular blockade itself, and the combination is usually well tolerated.
How serious is the interaction between Hyoscyamine spray 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: No dose change is needed. Monitor heart rate and watch for additive anticholinergic effects.
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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