Preferred Authorized Specialty Distributors


Amatheon Aniamal Health is the Leading Veterinary Supplier of “Cross-Over Medications ™” in the Nation. Our Mission is to provide you with the Best Customer Service Experience possible by utilizing...


QK Healthcare, a VAWD accredited trusted leader in pharmaceutical distribution providing personalized, superior, customer service. We supply major drug, supermarket, and mass merchandise retailers along with mail order and independent pharmacies throughout the country.

Authorized Distributors

AmerisourceBergen is driving innovative partnerships with global manufacturers, providers and pharmacies to improve product access and...

McKesson is in business for better health. As a company working with healthcare stakeholders in every setting, we are charting the course toward a stronger...

"Morris & Dickson is a corporate family - a family of Dicksons and employees and customers... we care about each other and we care about our customers...

If you are seeking to fill a Gleostine® (lomustine) prescription for a patient covered under the Medicare, Medicaid or FSS (VA) programs, please contact the Manufacturer directly at:
NextSource Pharmaceuticals
Phone: 855.672.2468

Become a Distributor

To become a NextSource Direct Authorized Distributor, you must qualify by completing an Authorized Distribution Application. For more information on becoming a Direct Supplier, please email us at and a NextSource Representative will contact you within two business days.