The Holy Communion is only effective while it remains in the mouth and loses its efficacy once it reaches the stomach
On the Efficacy of Holy Communion Fr Lawrence Ogundipe, SDV The question of whether Holy Communion is only effective while it remains in the mouth and loses its efficacy once it reaches the stomach touches on an important aspect of Catholic Eucharistic theology. The Catholic Church teaches that after the consecration, the bread and wine become truly the Body, Blood, Soul, and Divinity of Jesus Christ. This Real Presence remains as long as the Eucharistic species (the appearances of bread and wine) continue to exist. Consequently, Christ is sacramentally present not only in the mouth but also while the consecrated Host remains intact within the communicant. However, the grace and efficacy of Holy Communion should not be understood merely in a physical or biological sense. The Eucharist is not a medicine whose effect is limited to the place where it is physically located. Rather, it is a sacrament instituted by Christ to unite the believer with Him and with His Church. When a ...