-Antacids
-Anti-thyroid medications
-Calcium supplements
-Cholestyramine
-Colestipol
-Estrogen and progestin hormones
-Iron supplements
-Medications for diabetes

They need to know if you have any of these conditions:
-Addison''s disease or other adrenal gland problems
-Angina
-Bone problems
-Diabetes
-Dieting or on a weight loss program
-Fertility problems
-Heart disease
-Pituitary gland problems
-Take medications that treat or prevent blood clots
-An unusual or allergic reaction to levothyroxine, thyroid hormones, other medications, foods, dyes, or preservatives
-Pregnant or trying to get pregnant
-Breast-feeding

Do not switch brands of this medication unless your care team agrees with the change. Ask questions if you are uncertain.
You will need regular exams and occasional blood tests to check the response to treatment. If you are receiving this medication for an underactive thyroid, it may be several weeks before you notice an improvement. Check with your care team if your symptoms do not improve.
It may be necessary for you to take this medication for the rest of your life. Do not stop using this medication unless your care team advises you to.
This medication can affect blood sugar levels. If you have diabetes, check your blood sugar as directed.
Some brands of this medication may have a strong odor. This does not mean that the medication is spoiled.
You may lose some of your hair when you first start treatment. With time, this usually corrects itself.
If you are going to have surgery, tell your care team that you are taking this medication.

Keep out of the reach of children and pets.
Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Protect from light and moisture. Keep container tightly closed. Throw away any unused medication after the expiration date.