To receive Eucharist you must
1)Be free of mortal sin
2)Not eat or drink anything one hour prior to receiving it(water is permitted at any time though)
Eucharist
The Eucharist gives one the "food of eternal life." The Eucharist also allows us to receive the Lord and shows us that we are committed to Him. The Eucharist also is the initiation into Christ's body and blood which was shed for us. Therefore Eucharist is a sacrament of Initiation.
The sacrament of Eucharist is normally given to children for the very first time at the age of 8 - 10 years. People who are not baptised in the Roman Catholic church can only receive the sacrament of the Holy Eucharist after their Baptism.
The sacrament that is known as the sacrament of sacraments is the Eucharist. It is considered the most important and central sacrament in the Catholic Church, as it is believed to be the actual body and blood of Jesus Christ. Through the Eucharist, Catholics believe they receive the true presence of Christ and are united with him and with one another as his followers.
Roman Catholic AnswerThe only strictly necessary sacrament, without which one has no Christian life at all is Baptism. To live a good Christian life, one should regularly receive Penance and the Eucharist, and receive confirmation when of age. The sacraments of Matrimony and Holy Orders are only appropriate for those who have that vocation. And the sacrament of Anointing of the Sick is helpful at the end or in sickness, but not necessarily required.
Eastern Orthodox Christians are permitted with special permission to receive the Eucharist from a Catholic Church on certain occasions and other non-Catholic Christians may be able to receive if they are in danger of death, express a belief in the Eucharist, and ask for it on their own initiative. The reason for this is that only the Catholic Church and the Orthodox Church believe in the Eucharist in the proper sense, and furthermore, the Eucharist is a sacrament of unity within the Church, and it would be wrong for those who do not share fully in the unity of the Catholic Church to receive it.
In order for the Gates of Heaven to be re-opened to us, we needed eternal satisfaction for our sin (Adam and Eve's sin). Because Christ is God, and He died for us, He provided that eternal satisfaction ( because with God there is no time because He created time). In the Eucharist we receive that eternal sacrifice in the Eucharist in a non- bloody manner.
Jesus is the author of the Sacraments, their dispenser and the cause of their efficacy. He, however, is not properly a sacrament Himself, for a sacrament is a visible sign meant to confer grace when validly administered. The phrase, "Jesus is the first sacrament" may refer to Jesus in the Holy Eucharist, for He is there truly present, Body, Blood, Soul and Divinity. The Holy Eucharist is not the first sacrament received, however, it is first among the others in its sublime excellence, for in it we really receive God and are in His Divine Presence. The Holy Eucharist also carries with it incredible graces.
In Catholic teaching, it is not appropriate to receive the Eucharist while in a state of mortal sin. Mortal sin signifies a serious separation from God, and receiving the Eucharist under such conditions is considered a grave matter. The faithful are encouraged to seek reconciliation through the Sacrament of Confession before participating in the Eucharist. This practice emphasizes the importance of being in a state of grace to fully partake in the sacrament.
Those things are sometimes done at the Easter Vigil.
As far as my knowledge reaches, Christian Catholicism is the only religion known to practice the anointing of the sick or also known as last rites. Last rites involves receiving the Eucharist and an anointing of oil. People who are on the verge of death, or seem to be, or are going in for a serious surgery that could end in death, and are Catholic, may receive this sacrament. If one is not confirmed, has not had a first communion Eucharist, baptized or had a confession, then these are all part of the last rites that are being administered. if one has received all these sacraments, then the Eucharist is the only sacrament received along with the anointing, although confession may be a part of it as well.
Communion- This is the religious sacrament where you take the Eucharist for the first time. After this, you are allowed to take the Eucharist at church every time. Confirmation- This is where you get another middle name. It must be a saint's name- Theresa, John, Mary, etc.- and it makes you officially a part of the church.