A unit for feeding products (3) to a blistering machine (M) includes a delivery group (2, 2a, S) for selectively distributing products (3) to a station (SR), where the products (3) are introduced into respective blisters (40) of a blister band (4), moving in a forward direction (W) inside the blistering machine (M). The filling station (SR) is defined by a conveyor (10) consisting of a belt (11) provided with seas (110). Each seat (110) receives a relative product (3) distributed by the delivery group (2, 2a, S) and releases the products (3) into a respective blister (4). The conveyor (10) include at least one endless belt (11), moving in step relation with the blister band (4) wound around respective pulling wheels (13, 14), with an upper portion of the belt (11) defined by an upper run (11a) extending under the delivery group (2, 2a, S) in a direction parallel to the forward direction (W), defined by a lower run (11b) extending, along at least a section (O) parallel to the forward direction (W), substantially very close to and above the blister band (4) and facing the blister band (4).