Whether the Eucharist is a sacrament?

❌ Objection 1 : It seems that the Eucharist is not a sacrament. For two sacraments ought not to be ordained for the same end, because every sacrament is efficacious in producing its effect. Therefore, since both Confirmation and the Eucharist are ordained for perfection, as Dionysius says (Eccl. Hier. iv), it seems that the Eucharist is not a sacrament, since Confirmation is one, as stated above (Question [65], Article [1]; Question [72], Article [1]).

❌ Objection 2 : Further, in every sacrament of the New Law, that which comes visibly under our senses causes the invisible effect of the sacrament, just as cleansing with water causes the baptismal character and spiritual cleansing, as stated above (Question [63], Article [6]; Question [66], Articles [1],3,7). But the species of bread and wine, which are the objects of our senses in this sacrament, neither produce Christ's true body, which is both reality and sacrament, nor His mystical body, which is the reality only in the Eucharist. Therefore, it seems that the Eucharist is not a sacrament of the New Law.

❌ Objection 3 : Further, sacraments of the New Law, as having matter, are perfected by the use of the matter, as Baptism is by ablution, and Confirmation by signing with chrism. If, then, the Eucharist be a sacrament, it would be perfected by the use of the matter, and not by its consecration. But this is manifestly false, because the words spoken in the consecration of the matter are the form of this sacrament, as will be shown later on (Question [78], Article [1]). Therefore the Eucharist is not a sacrament.