You may bring medically necessary liquids, medications and creams in excess of 3.4 ounces or 100 milliliters in your carry-on bag. Remove them from your carry-on bag to be screened separately from the rest of your belongings. You are not required to place your liquid medication in a plastic zip-top bag. If a liquid, gel, or aerosol declared as medically-necessary alarms, then it may require additional screening and may not be allowed