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Drug Interactions between Lo Loestrin Fe and topiramate

This report displays the potential drug interactions for the following 2 drugs:

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Interactions between your drugs

Major

ethinyl estradiol topiramate

Applies to: Lo Loestrin Fe (ethinyl estradiol / norethindrone) and topiramate

Topiramate may reduce the blood levels and effects of ethinyl estradiol, which may make it less reliable as a form of birth control. Alternative or additional methods of birth control should be used during treatment and for at least 28 days after discontinuing treatment with topiramate to avoid unintended pregnancy. This is particularly important because topiramate may cause harm in the unborn child. Talk to your gynecologist or other healthcare professional for help in selecting an effective method of birth control that is best for you. If you take hormone replacement for menopause, you should contact your doctor if you experience increased frequency or worsening of your symptoms such as hot flashes, vaginal dryness, or abnormal bleeding. 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.

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Major

norethindrone topiramate

Applies to: Lo Loestrin Fe (ethinyl estradiol / norethindrone) and topiramate

Topiramate may reduce the blood levels and effects of norethindrone, which may make it less reliable as a form of birth control. Alternative or additional methods of birth control should be used during treatment and for at least 28 days after discontinuing treatment with topiramate to avoid unintended pregnancy. This is particularly important because topiramate may cause harm in the unborn child. Talk to your gynecologist or other healthcare professional for help in selecting an effective method of birth control that is best for you. If you take hormone replacement for menopause, you should contact your doctor if you experience increased frequency or worsening of your symptoms such as hot flashes, vaginal dryness, or abnormal bleeding. 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.

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Drug and food interactions

Moderate

norethindrone food

Applies to: Lo Loestrin Fe (ethinyl estradiol / norethindrone)

Grapefruit juice may increase the blood levels of certain medications such as norethindrone. You may want to limit your consumption of grapefruit and grapefruit juice during treatment with norethindrone. However, if you have been regularly consuming grapefruit or grapefruit juice with the medication, then it is advisable for you to talk with your doctor before changing the amounts of these products in your diet, as this may alter the effects of your medication. Contact your doctor if your condition changes or you experience increased side effects. Orange juice is not expected to interact.

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Minor

ethinyl estradiol food

Applies to: Lo Loestrin Fe (ethinyl estradiol / norethindrone)

Information for this minor interaction is available on the professional version.

Minor

ethinyl estradiol food

Applies to: Lo Loestrin Fe (ethinyl estradiol / norethindrone)

Information for this minor interaction is available on the professional version.

Minor

norethindrone food

Applies to: Lo Loestrin Fe (ethinyl estradiol / norethindrone)

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.


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Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor 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.
Unknown No interaction information available.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.