Drug interactions with rifampin-isoniazid oral and levothyroxine oral

rifampin-isoniazid oral brand names and other generic formulations include:

IsonaRif Oral, Rifamate Oral

All generic drug interactions for rifampin-isoniazid oral (lists will include brand and generic names):

levothyroxine oral brand names and other generic formulations include:

Eltroxin Oral, Estre Oral, Estue Oral, Euthyrox Oral, Levo-T Oral, Levotabs Oral, Levothroid Oral, Levoxine Oral, Levoxyl Oral, L-Thyroxine Oral, L-Thyroxine Sodium Oral, Synthroid Oral, Synthrox Oral, Thyrox Oral, Tirosint Oral, Unithroid Oral

All generic drug interactions for levothyroxine oral (lists will include brand and generic names):
MinorInteraction is unlikely, minor, or nonsignificant

rifampin-isoniazid oral and levothyroxine oral

rifampin-isoniazid oral decreases levels of levothyroxine oral by speeding up drug metabolism.

Patient Drug Interactions Source: RxList
© 2023 RxList, Inc.
MinorMinor/Significance Unknown.

rifampin-isoniazid oral and levothyroxine oral

rifampin-isoniazid oral decreases levels of levothyroxine oral by increasing metabolism.

Clinical Drug Interactions Source: Medscape from WebMD
© 1994-2023 WebMD, LLC.

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Drug Interaction Categories

Contraindicated

Never use this combination of drugs because of high risk for dangerous interaction

Serious

Potential for serious interaction; regular monitoring by your doctor required or alternate medication may be needed

Significant

Potential for significant interaction (monitoring by your doctor is likely required)

Minor

Interaction is unlikely, minor, or nonsignificant

Disclaimer: The information contained herein should NOT be used as a substitute for the advice of an appropriately qualified and licensed physician or other health care provider. The information provided here is for informational purposes only. This tool may not cover all possible drug interactions. Please check with a physician if you have health questions or concerns. Although we attempt to provide accurate and up-to-date information, no guarantee is made to that effect.

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