The sacraments are efficacious signs of grace, instituted by Christ and entrusted to the Church, by which divine life is dispensed to us. (Cf. Catechism of the Catholic Church, §1131)
The sacrament of Anointing of the Sick is administered to bring healing – spiritual, mental, emotional and even physical – to those in need. It may also be given to those in danger of death, although Viaticum or Holy Communion is more appropriate at the time of death if the person is able to receive it.