"The special grace of the sacrament of the Anointing of the Sick has as its effects:
- the uniting of the sick person to the passion of Christ, for his own good and that of the whole Church;
- the strengthening, peace, and courage to endure in a Christian manner the sufferings of illness or old age;
- the forgiveness of sins, if the sick person was not able to obtain it through the sacrament of Penance;
- the restoration of health, if it is conducive to the salvation of his soul;
- the preparation for passing over to eternal life." 

 -Catechism of the Catholic Church, 1532