Drug interactions
Chlorthalidone + Tizanidine
Severity: Minor
Chlorthalidone and Tizanidine: 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
Tizanidine lowers blood pressure and chlorthalidone reduces volume, so combined use may produce additive hypotension. The effect is usually manageable.
What this interaction means in plain words
Chlorthalidone and Tizanidine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Chlorthalidone belongs to Cardiovascular; Tizanidine belongs to Musculoskeletal.
Why it happens
Additive blood-pressure lowering from central alpha-2 agonism and thiazide-like diuresis.
What to do
Monitor blood pressure and watch for orthostatic dizziness when starting or changing either drug.
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 Tizanidine
- Ciprofloxacin + Tizanidine Contraindicated
- Fluvoxamine + Tizanidine Contraindicated
- Pefloxacin + Tizanidine Contraindicated
- Pipemidic acid + Tizanidine Contraindicated
- Benzhydrocodone / acetaminophen + Tizanidine Major
- Brexanolone + Tizanidine Major
Other interactions of Chlorthalidone
Frequently asked questions
Can I take Chlorthalidone with Tizanidine?
MediHelp rates the interaction as minor. Chlorthalidone and Tizanidine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Tizanidine lowers blood pressure and chlorthalidone reduces volume, so combined use may produce additive hypotension. The effect is usually manageable.
How serious is the interaction between Chlorthalidone and Tizanidine?
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 blood pressure and watch for orthostatic dizziness when starting or changing either drug.
What other medicines interact with Tizanidine?
MediHelp also lists interactions of Tizanidine with, for example, Ciprofloxacin, Fluvoxamine, Pefloxacin. The full list is on the Tizanidine page.
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