Abstract: An intravenous piggyback tubing flush apparatus includes a flush chamber attached to an intravenous (IV) set on the vertical tube and located lower than an IV medication bag for following administration of medication with a flush solution of normal saline from the flush chamber, which flushes the medication from the IV tubing and from a venous access device that is inserted into the patient, thereby preventing clotting of the venous access device. The flush solution automatically follows administration of the medication. An air vent on the flush chamber and a separate air vent on the medication bag facilitate the flow of medication and flush solution through the IV tubing and the venous access device. The flush chamber is located lower than the medication bag.