Head over to this page: https://messageboards.webmd.com/health-conditions/f/hepatitis-c/. 2. Choose the tag from the drop-down menu that clicks most with you (and add it to any posts you create so others can easily find and sort through posts)
A: Depending on how high of a dose you are on, a double dose of levothyroxine can result in the following symptoms: anxiety, confusion or disorientation, heart palpitations-fast and/or forceful beats, irregular heart beats, high blood pressure, and at very high doses, seizures, strokes, coma, and death.
Types of drugs that interact with levothyroxine include: 1  Amphetamines. 2  Aspirin. 3  Blood thinners such as warfarin (Coumadin) 4  Antidepressants or drugs used to treat anxiety. 5  Heart medications, such as metoprolol (Lopressor, Toprol), propranolol (Inderal), and digoxin (Lanoxin) 6  Anti-seizure drugs such as phenytoin (Dilantin)