Catholic Church Times

Patron Saint of Pharmacists

Category: Medicine & Healing

Ss. Cosmas and Damian, twin physician-martyrs of the 3rd century who gave their medical services without charge, are patrons of pharmacists and chemists as well as doctors. Their feast day is September 26. The pharmacy profession traces part of its patron-saint tradition to them through the long history of religious hospitals where medicine and pharmacy were practiced together.

St. James the Less, Apostle and author of the Letter of James, is also listed as a patron of pharmacists in some traditional lists, though the connection is less direct than that of Cosmas and Damian.

Patron Saints of Pharmacists

Formally proclaimed patronage — sourced from canonized saints in the Roman Calendar.

Primary Patron
Saints Philip and James
Feast Day
May 3

Saints Philip and James is invoked as patron of pharmacists. Saint Philip the Apostle, a native of Bethsaida in Galilee, was among the first disciples called by Jesus (John 1:43-45). The Gospel of John records his role at the multiplication of the loaves (John 6:5-7), his bringing of the Greeks who wished to see Jesus (John 12:21-22), and his request at the Last Supper, Show us the Father (John 14:8-9). Sources: https://www.vatican.va/content/benedict-xvi/en/audiences/2006/documents/hf_ben-xvi_aud_20060906.html.

Read full biography of Saints Philip and James →

Saints Cosmas and Damian
Feast Day
September 26

Saints Cosmas and Damian is invoked as patron of pharmacists. Cosmas and Damian, traditionally said to be twin brothers, were Arab Christians of the late third century who practiced medicine without payment and were known therefore as the Anargyroi, the silverless ones. Their cultus is securely attested from the fifth century: a great basilica was built in their honor at Cyrrhus in Syria, where their relics were translated; another, founded in their memory at Constantinople by the Emperor Justinian (527-565), became one of the chief churches of the Byzantine capital. Sources: https://www.vatican.va/content/john-xxiii/la/motu_proprio/documents/hf_j-xxiii_motu-proprio_19620713_rubricarum-instructum.html.

Read full biography of Saints Cosmas and Damian →

Saint John Leonardi
Feast Day
October 9

Saint John Leonardi is invoked as patron of pharmacists. Giovanni Leonardi was born at Diecimo near Lucca in 1541. Trained as a pharmacist, he was ordained priest in 1572 and at once embarked on the catechetical reform of his native city in the spirit of the recently concluded Council of Trent (1545-1563). Sources: https://www.vatican.va/content/benedict-xvi/en/audiences/2009/documents/hf_ben-xvi_aud_20091007.html.

Read full biography of Saint John Leonardi →

Saint John Damascene
Feast Day
December 4

Saint John Damascene is invoked as patron of pharmacists. Mansur ibn Sarjun, known to the Church as John of Damascus, was born around 675 in Damascus, capital of the new Umayyad Caliphate. His Christian Arab family held the high civil office of Mansur (treasurer) at the caliph's court, an office his grandfather had held under the Byzantines and continued to hold under Muslim rule. Sources: https://www.usccb.org/resources/2026cal.pdf.

Read full biography of Saint John Damascene →

Frequently Asked Questions

Who is the patron saint of pharmacists?

Saints Philip and James is the primary patron saint of pharmacists. Their feast day is May 3.

What is a patron saint?

A patron saint is a holy man or woman canonized by the Church whose life and heavenly intercession are considered especially powerful for particular needs, groups, or situations. Catholics ask patron saints to intercede — to pray to God on their behalf — drawing on the doctrine of the Communion of Saints.

How do I ask for Philip and James's intercession?

To ask for a patron saint's intercession, Catholics typically pray directly to the saint, saying something like: "Philip and James, pray for us." You may also light a candle, attend Mass on their feast day, or make a novena — nine days of consecutive prayer — asking for their help before a particular need.