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Drug Interactions With Thyroid USP

Antacids
Antacids can bind to thyroid USP in the digestive tract, preventing it from being absorbed into the body. Make sure to separate thyroid USP and antacids by at least four hours.
Calcium Supplements
Calcium can bind to thyroid USP in the digestive tract, preventing it from being absorbed into the body. Make sure to separate thyroid USP and calcium by at least four hours.
 
Certain Seizure Medications
Taking thyroid USP with some seizure medications may change the amount of thyroid USP your body needs, and your healthcare provider may need to adjust your thyroid USP dosage as a result.
Cholestyramine
Cholestyramine can bind to thyroid USP in the digestive tract, preventing it from being absorbed into the body. Make sure to separate these drugs by at least four hours.
Colestipol
Colestipol can bind to thyroid USP in the digestive tract, preventing it from being absorbed into the body. Make sure to separate thyroid USP and colestipol by at least four hours.
Diabetes Medications
When you first start thyroid USP or increase your dose, your healthcare provider may need to increase the dose of your diabetes medications. Check with your healthcare provider before taking thyroid USP if you are already taking diabetes medications.
Estrogens
Estrogens can lower the level of thyroid USP in your blood, perhaps making it less effective. Your healthcare provider may need to adjust your thyroid USP dose if you start or stop taking an estrogen medication.
Theophylline
Thyroid USP may affect the levels of theophylline in your blood. Your healthcare provider may need to check your theophylline levels and adjust your dosage as necessary.
Last reviewed by: Kristi Monson, PharmD
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