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About MOS
Veteran Owned
McGuff Outsourcing Solutions (MOS) is a 503B outsourcing provider supplying ready-to-use sterile drug products to hospitals, ambulatory surgery centers, physician practices, IV hydration clinics, and other licensed healthcare organizations across the United States. MOS delivers reliable outsourcing solutions supported by a strong quality foundation and more than 50 years of pharmaceutical experience within the McGuff family of companies.
MOS operates under the legal and regulatory framework of McGuff Pharmaceuticals, Inc. (MPI) — an FDA-registered, cGMP-compliant sterile drug manufacturer.
MOS Management Responsibilities
- Drug selection and product planning
- Product development and formulation oversight
- Raw-material qualification
- Pharmacist oversight of sterile manufacturing operations
- cGMP compliance throughout storage, handling, and distribution
MPI Manufacturing Operations
- Automated and semiautomated sterile batch production
- Quality control and testing
- Environmental monitoring
- Ongoing cGMP facility compliance
- Final product release to MOS
This integrated model combines MOS's customer-focused product strategy with MPI's robust manufacturing and quality systems. The independent McGuff Quality Unit provides oversight throughout development, manufacturing, and distribution to support regulatory compliance and consistent product quality.
Supporting Healthcare Organizations
- 503B outsourcing solutions
- Ready-to-use sterile drug products
- Reliable product availability
- Transparent documentation
- Responsive technical and customer support
Serving a diverse base of licensed providers — from large hospital systems to fast-growing IV hydration and wellness clinics — MOS prioritizes product consistency, regulatory integrity, and dependable supply.
Our mission is to provide healthcare professionals with safe, compliant, and dependable outsourcing solutions backed by the manufacturing strength of MPI and the long-established pharmaceutical expertise of the McGuff companies.
Why Choose McGuff?
Premium
Quality
We adhere to the most stringent regulatory standards to produce the highest quality products for your patients. From ingredient sourcing to production, the compounded drugs we ship to our customers are safe and effective.
Easy Ordering
Experience
Place orders and manage your account easily with our online platform. Enjoy an efficient, streamlined shopping experience and save valuable time.
Free, 2-Day
Shipping
Receive your products quickly at no additional cost. All orders are processed on the same day and delivered within two days.
Dedicated
Customer Care
Our friendly, knowledgeable customer service team provides exceptional support for all your ordering needs. They can be reached during regular business hours: Monday – Friday, 7:00 a.m. – 5:30 p.m. PT.
Meet the Team
Our leadership team is comprised of credentialed and experienced professionals from the compounding industry. Several members of our management team have worked together for over 30 years!
Learn MoreQuestions?
Comments?
We'd love to hear from you
Phone: (877) 444-1133
Fax: (877) 444-1155
2921 West MacArthur Blvd. Suite 142
Santa Ana, CA 92704
