Drug Interactions between Demulen 1/35 and nalidixic acid
This report displays the potential drug interactions for the following 2 drugs:
- Demulen 1/35 (ethinyl estradiol/ethynodiol)
- nalidixic acid
Interactions between your drugs
nalidixic acid ethinyl estradiol
Applies to: nalidixic acid and Demulen 1 / 35 (ethinyl estradiol / ethynodiol)
Antibiotics such as nalidixic acid may reduce the effects of ethinyl estradiol in some women. If you are using ethinyl estradiol for birth control, you may be at increased risk for pregnancy or breakthrough bleeding. Be sure to alert your doctor if you are having any vomiting and/or diarrhea as this too can impact how well ethinyl estradiol works. Talk to your doctor or pharmacist to determine if you should use an alternative or additional form of birth control during or after treatment with nalidixic acid. In addition, some birth control preparations may include "placebo" non-hormonal pills that contain iron. If you are taking these iron-containing pills during treatment with nalidixic acid, you should separate the dosing times by several hours so that the iron does not interfere with absorption of the antibiotic. Ask your doctor or pharmacist for information on when best to take these medications. If you are using ethinyl estradiol for a purpose other than birth control, please let your doctor know if you have any questions or notice any changes in how well ethinyl estradiol is working. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
Drug and food interactions
nalidixic acid food
Applies to: nalidixic acid
Nalidixic acid and multivitamin with minerals should not be taken orally at the same time. Products that contain magnesium, aluminum, calcium, iron, and/or other minerals may interfere with the absorption of nalidixic acid into the bloodstream and reduce its effectiveness. If possible, it may be best to avoid taking multivitamin with minerals while your are being treated with nalidixic acid. Otherwise, you should take nalidixic acid either 2 hours before or 2 hours after the multivitamin with minerals dose. Talk to a healthcare professional if you are not sure whether a product contains something that could potentially interact with your medication or if you have questions on how to take this or other medications you are prescribed. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
nalidixic acid food
Applies to: nalidixic acid
Using caffeine together with nalidixic acid may increase the effects of caffeine. Contact your doctor if you experience headache, tremor, restlessness, nervousness, insomnia, and increased blood pressure or heart rate. If your doctor does prescribe these medications together, you may need a dose adjustment or special test to safely use both medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
ethinyl estradiol food
Applies to: Demulen 1 / 35 (ethinyl estradiol / ethynodiol)
Information for this minor interaction is available on the professional version.
ethinyl estradiol food
Applies to: Demulen 1 / 35 (ethinyl estradiol / ethynodiol)
Information for this minor interaction is available on the professional version.
ethynodiol food
Applies to: Demulen 1 / 35 (ethinyl estradiol / ethynodiol)
Information for this minor interaction is available on the professional version.
Therapeutic duplication warnings
No warnings were found for your selected drugs.
Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.
See also
Drug Interaction Classification
Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit. | |
Moderately clinically significant. Usually avoid combinations; use it only under special circumstances. | |
Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan. | |
No interaction information available. |
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
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