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Diplomat welcomes patients with common variable immunodeficiency (CVID) and supports them with treatment and answers. Throughout therapy, we provide advice on funding and 24/7 clinical support, so patients are always informed. We’re here to make sure patients’ access to their prescribed intravenous immune globulin or other microbacterial treatments is uninterrupted. That’s why we reach out before each refill to coordinate delivery and address side effects and concerns. Along the way, we communicate between all members of the health care team, making sure everyone is informed and that the patient is always put first.

Common Variable Immunodeficiency

One of the first steps after a common variable immunodeficiency (CVID) diagnosis is understanding the condition. The information on this site and linked sites is not meant to replace your physician’s advice, medical care or a diagnosis. If you have questions about your disease, please ask your prescriber.


Patients with common variable immunodeficiency are more prone to sickness than the rest of the population. This is due to a low level of immune globulin (antibodies), possibly due to a genetic defect.

CVID, also known as hypogammaglobulinemia, typically is diagnosed within a child’s first year. As the mother’s protective antibodies wear off, the infant becomes susceptible to bacterial infection. Common infections include respiratory illness, gastrointestinal disorders and autoimmune diseases.

Regular treatment can help CVID patients live normal, healthy lifestyles.


Mayo Clinic
Ontario Association of Pediatrics

The information contained herein may not be construed as medical advice. It is for educational purposes only. Diplomat Pharmacy Inc. takes no responsibility for the accuracy or validity of the information contained herein, nor the claims or statements of any manufacturer.

Click here to see all Immune Globulin products.


  • Can I Use Diplomat?

    Can I Use Diplomat?

    We provide benefits investigation and help verify your eligibility for our programs and services. Fill out a simple form and we’ll get in touch with you.
  • Financial Assistance

    Financial Assistance

    We help connect patients with nonprofit, manufacturer-sponsored and third-party funding options to keep therapy affordable.
  • PIDD Post Newsletter

    PIDD Post Newsletter

    Sign up to receive helpful information on infusion management and treatments, stories from the community, and tips to thrive with a primary immune deficiency.
  • Pregnancy Brochure

    Pregnancy Brochure

    Our PIDD Pregnancy Brochure brochure helps expectant mothers with PIDD and families prepare for pregnancy and a new baby.
  • Off to College Brochure

    Off to College Brochure

    This brochure provides a helpful checklist and tips for families and students with PIDD to make the transition from home to school as easy as possible.
  • Back-to-School Brochure

    Back-to-School Brochure

    Developed by a nurse and mother of a PIDD patient, this brochure helps parents and children take simple steps to make the school year a success.
  • Consumer Advocacy Program

    Consumer Advocacy Program

    Many of our consumer advocates are members of the primary immune deficiencies community themselves. They’re here to guide patients through the often complex world of health care.

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