Drug interactions
Cimetidine + Serdexmethylphenidate / dexmethylphenidate
Severity: Minor
Cimetidine and Serdexmethylphenidate / dexmethylphenidate: 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
Acid-reducing agents may alter the release profile of some extended-release methylphenidate products. The effect with this prodrug combination is uncertain and probably small.
What this interaction means in plain words
Cimetidine and Serdexmethylphenidate / dexmethylphenidate 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
Raised gastric pH may change release from pH-dependent formulations; the effect on this product is not well established.
What to do
Monitor clinical response and adverse effects of the stimulant when starting or stopping cimetidine.
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 Cimetidine
- Cimetidine + Dofetilide Contraindicated
- Cimetidine + Fezolinetant Contraindicated
- Alfentanil + Cimetidine Major
- Atazanavir + Cimetidine Major
- Carmustine + Cimetidine Major
- Cimetidine + Citalopram Major
Frequently asked questions
Can I take Cimetidine with Serdexmethylphenidate / dexmethylphenidate?
MediHelp rates the interaction as minor. Cimetidine and Serdexmethylphenidate / dexmethylphenidate have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Acid-reducing agents may alter the release profile of some extended-release methylphenidate products. The effect with this prodrug combination is uncertain and probably small.
How serious is the interaction between Cimetidine and Serdexmethylphenidate / dexmethylphenidate?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor clinical response and adverse effects of the stimulant when starting or stopping cimetidine.
What other medicines interact with Cimetidine?
MediHelp also lists interactions of Cimetidine with, for example, Dofetilide, Fezolinetant, Alfentanil. The full list is on the Cimetidine page.
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