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Drug Interactions between levothyroxine / liothyronine and NuvaRing

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

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Interactions between your drugs

Moderate

ethinyl estradiol liotrix

Applies to: NuvaRing (ethinyl estradiol / etonogestrel) and levothyroxine / liothyronine

Before taking ethinyl estradiol, tell your doctor if you also use liotrix. You may need dose adjustments or special tests in order to safely take both medications together. If you are already taking ethinyl estradiol and liotrix, your thyroid levels may need to be measured if your dose of ethinyl estradiol is changed or stopped. You should notify your doctor if you have symptoms of low thyroid such as tiredness, feeling cold, constipation, unexplained weight gain, depression, joint or muscle pain, thinning hair or hair loss, dry skin, hoarseness, and abnormal menstrual periods. 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

liotrix food

Applies to: levothyroxine / liothyronine

The timing of meals relative to your oral liotrix dose can affect the absorption of the medication. Therefore, liotrix should be taken on a consistent schedule with regard to time of day and relation to meals to avoid large fluctuations in blood levels, which may alter its effects. In addition, absorption of liotrix may be decreased and/or delayed by foods such as soybean flour, cotton seed meal, walnuts, dietary fiber, calcium, calcium fortified juices and grapefruit or grapefruit juice. These foods should be avoided within several hours of dosing if possible. 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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Moderate

etonogestrel food

Applies to: NuvaRing (ethinyl estradiol / etonogestrel)

Grapefruit juice may increase the blood levels of certain medications such as etonogestrel. You may want to limit your consumption of grapefruit and grapefruit juice during treatment with etonogestrel. 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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Moderate

liotrix food

Applies to: levothyroxine / liothyronine

Using multivitamin with minerals together with liotrix may decrease the effects of liotrix. You should separate the administration of liotrix and multivitamin with minerals by at least 4 hours. 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.

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Minor

ethinyl estradiol food

Applies to: NuvaRing (ethinyl estradiol / etonogestrel)

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

Minor

ethinyl estradiol food

Applies to: NuvaRing (ethinyl estradiol / etonogestrel)

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.