Drug interactions
Secobarbital + Sulfamethoxazole
Severity: Minor
Secobarbital and Sulfamethoxazole: 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
Secobarbital is an enzyme inducer and could modestly reduce sulfamethoxazole exposure. The clinical significance is uncertain, as sulfamethoxazole has several elimination pathways.
What this interaction means in plain words
Secobarbital and Sulfamethoxazole 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
Barbiturate-induced hepatic enzyme activity, including CYP2C9, may increase sulfamethoxazole metabolism.
What to do
No routine adjustment is needed; assess clinical response to the antibiotic if infection fails to improve.
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 Secobarbital
- Calcium / magnesium / potassium / sodium oxybates + Secobarbital Contraindicated
- Doravirine + Secobarbital Contraindicated
- Elbasvir / grazoprevir + Secobarbital Contraindicated
- Elvitegravir / cobicistat / emtricitabine / tenofovir df + Secobarbital Contraindicated
- Isavuconazonium + Secobarbital Contraindicated
- Lonafarnib + Secobarbital Contraindicated
Frequently asked questions
Can I take Secobarbital with Sulfamethoxazole?
MediHelp rates the interaction as minor. Secobarbital and Sulfamethoxazole have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Secobarbital is an enzyme inducer and could modestly reduce sulfamethoxazole exposure. The clinical significance is uncertain, as sulfamethoxazole has several elimination pathways.
How serious is the interaction between Secobarbital and Sulfamethoxazole?
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 routine adjustment is needed; assess clinical response to the antibiotic if infection fails to improve.
What other medicines interact with Secobarbital?
MediHelp also lists interactions of Secobarbital with, for example, Calcium / magnesium / potassium / sodium oxybates, Doravirine, Elbasvir / grazoprevir. The full list is on the Secobarbital page.
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