The sacrament of Anointing of the Sick is given to those who are seriously ill by anointing them on the forehead and hands with duly blessed oil—pressed from olives or from other plants—saying, only once: "Through this holy anointing may the Lord in his love and mercy help you with the grace of the Holy Spirit. May the Lord who frees you from sin save you and raise you up." (Catechism of the Catholic Church, 1513)
Anointing of the Sick includes (CCC 1519):
This sacrament has a powerful effect upon the sick person (CCC 1520-21):
This sacrament is primarily intended for any who suffer from serious or chronic physical or emotional illness or who struggle with the infirmities of age. One need not be in danger of death nor does the Church anoint one who has already died. If a patient is admitted to a local hospital, contact the hospital operator who will contact the "priest on call" to visit and bring the anointing.
"Is any among you sick? Let him call for the presbyters of the Church, and let them pray over him, anointing him with oil in the name of the Lord; and the prayer of faith will save the sick man, and the Lord will raise him up; and if he has committed sins, he will be forgiven". --James 5:14-15