About Diamond Drug Store

Joan, Gib, and Mark Zilner old photo

Our History

The Diamond Drugs name has been a fixture of downtown Indiana since 1937. But the face of the Diamond we know today arrived in 1970 when hometown pharmacists Gilbert and Joan Zilner took over the business from the Diamond Drugs corporation of Johnstown. Over the next 50 years, the Zilners (along with son Mark) would transform Diamond from a humble corner drug store into a nationwide pharmacy services provider for both correctional and long-term care facilities. However, the original Diamond Drugs store would remain the heart of the family business and continue to serve Indiana and neighboring communities with prescriptions and highly personalized customer care.

Today, Diamond Drugs is the only independent pharmacy left in downtown Indiana. In an era when so many community drug stores are forced to close, Diamond is proud to keep the traditional hometown pharmacy experience alive with friendly pharmacists, boutique shopping, and know-you-by-name service. Stop by and see how much we care about care