Theophylline
Warfarin
Combining warfarin with Synthroid may increase your risk of bleeding. Your healthcare provider may need to monitor you more closely and adjust your warfarin dose, especially when you start or stop taking Synthroid.
Final Thoughts on Synthroid Drug Interactions
It is possible that not all Synthroid drug interactions were discussed in this article. Therefore, you should talk with your pharmacist or healthcare provider about any specific drug interactions that may apply to you.