Drug interactions
Somapacitan + Tizanidine
Severity: Minor
Somapacitan 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
Growth hormone may increase the activity of some CYP enzymes, so it could lower tizanidine exposure and weaken its antispasticity effect. The effect is predicted rather than well documented for tizanidine.
What this interaction means in plain words
Somapacitan 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.
Somapacitan belongs to Endocrine; Tizanidine belongs to Musculoskeletal.
Why it happens
Possible growth hormone-mediated induction of CYP1A2 metabolism, increasing tizanidine clearance.
What to do
Monitor spasticity control after starting or changing the growth hormone dose, and adjust the tizanidine dose according to response.
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 Somapacitan
- Alogliptin-metformin + Somapacitan Moderate
- Alogliptin-pioglitazone + Somapacitan Moderate
- Alogliptin + Somapacitan Moderate
- Bazedoxifene-conjugated estrogens + Somapacitan Moderate
- Canagliflozin-metformin + Somapacitan Moderate
- Chlorpropamide + Somapacitan Moderate
Frequently asked questions
Can I take Somapacitan with Tizanidine?
MediHelp rates the interaction as minor. Somapacitan 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. Growth hormone may increase the activity of some CYP enzymes, so it could lower tizanidine exposure and weaken its antispasticity effect. The effect is predicted rather than well documented for tizanidine.
How serious is the interaction between Somapacitan 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 spasticity control after starting or changing the growth hormone dose, and adjust the tizanidine dose according to response.
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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