Drip chamber inserts including an elongate body portion for coupling to a drip chamber and including an outlet orifice of the drip chamber insert. The drip chamber inserts may further include first and second chambers, the first chamber may be disposed in the elongate body portion and fluidly coupled to an inlet orifice and to the outlet orifice. An anti-run-dry membrane may extend over the inlet orifice. The second chamber may be disposed in the elongate body portion, and a low flowrate orifice may extend from a base of the second chamber into a base portion for fluidly coupling the second chamber with the outlet orifice.