Drug interactions
Desogestrel-ethinyl estradiol + Tinidazole
Severity: Minor
Desogestrel-ethinyl estradiol and Tinidazole: 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
No clinically relevant interaction is established between tinidazole and combined oral contraceptives. The suggested effect of ethinyl estradiol on tinidazole levels is theoretical and unlikely to matter.
What this interaction means in plain words
Desogestrel-ethinyl estradiol and Tinidazole have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Desogestrel-ethinyl estradiol belongs to Endocrine; Tinidazole belongs to Anti Parasitic.
Why it happens
Theoretical competition for CYP3A4 metabolism; not clinically demonstrated.
What to do
No action is needed beyond routine awareness of tinidazole adverse 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 Desogestrel-ethinyl estradiol
- Desogestrel-ethinyl estradiol + Fezolinetant Contraindicated
- Aminocaproic acid + Desogestrel-ethinyl estradiol Major
- Amobarbital + Desogestrel-ethinyl estradiol Major
- Anastrozole + Desogestrel-ethinyl estradiol Major
- Apalutamide + Desogestrel-ethinyl estradiol Major
- Atazanavir + Desogestrel-ethinyl estradiol Major
Other interactions of Tinidazole
- Disulfiram + Tinidazole Contraindicated
- Ethanol + Tinidazole Major
- Fexinidazole + Tinidazole Major
- Lopinavir + Tinidazole Major
- Nilotinib + Tinidazole Major
- Ritonavir + Tinidazole Major
Frequently asked questions
Can I take Desogestrel-ethinyl estradiol with Tinidazole?
MediHelp rates the interaction as minor. Desogestrel-ethinyl estradiol and Tinidazole have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. No clinically relevant interaction is established between tinidazole and combined oral contraceptives. The suggested effect of ethinyl estradiol on tinidazole levels is theoretical and unlikely to matter.
How serious is the interaction between Desogestrel-ethinyl estradiol and Tinidazole?
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 action is needed beyond routine awareness of tinidazole adverse effects.
What other medicines interact with Desogestrel-ethinyl estradiol?
MediHelp also lists interactions of Desogestrel-ethinyl estradiol with, for example, Fezolinetant, Aminocaproic acid, Amobarbital. The full list is on the Desogestrel-ethinyl estradiol page.
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