A pharmacy technician should identify that levothyroxine (Synthroid) should have which of the following auxiliary y labels on the bottle? "May cause drowsiness." "Avoid prolonged exposure to sunlight." "Keep refrigerated." Take on an empty stomach."

## Step 1<br />Levothyroxine (Synthroid) is a medication used to treat hypothyroidism, a condition where the thyroid gland does not produce enough thyroid hormone. The medication is usually taken once a day, and it is important that it is taken on an empty stomach. This is because food can interfere with the absorption of the medication into the bloodstream.<br />## Step 2<br />The other options, such as "May cause drowsiness", "Avoid prolonged exposure to sunlight", and "Keep refrigerated", are not typically associated with levothyroxine. These warnings are more commonly associated with other medications, such as sedatives, photosensitive drugs, and medications that need to be stored in a cold environment.<br />## Step 3<br />Therefore, the auxiliary label that should be on the bottle of levothyroxine is "Take on an empty stomach".