A unit (1) 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 conveying means (10) consisting of a belt (11) provided with seats (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 conveying means (10) include at least one endless belt (11), moving in step relation with the blister band (4) and 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), and with the lower portion of the belt (11) 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).