Common Variable Immunodeficiency Support Group
Common variable immunodeficiency (CVID) is a group of 20-30 primary immunodeficiencies (PIDs) which have a common set of symptoms but with different underlying causes. CVID's underlying causes are different, but the result of these are that the body doesn't produce sufficient antibodies in response to exposure to pathogens.

Im here to tell you it is NOT. My levels have doubled since being on it. I would seek out an immunologist if you can. Contact Primaryimmune.org and they can assist you with finding a doc. Good luck.
from personal experience i have not had good luck with 2 of the allergist/immune doc i saw that is why i finally decided to stick with my hemo/onoco and find an internist that would work with him.
what i did when i was looking for a new doc was i made an appt talked to him/her (one was female one was male the female had trained and worked under a well known one in our area and was in practice with him..i couldnt get in to see him he was not taking new patients) after seeing her a few times i decided she wanted to view EVERYTHING from an allergy point and with cvid i am not convinced it is all allergies i think they play a part..but she had too many absolutes and i have found docs that deal with absolutes with the immune system are ones i stay clear of.... the other one claimed to be the end all of cvid experts...when me and the boys(both nephews were having seasonal allergies at the time which was causing me to get sick so took the boys to see him thinking if he could get them well i could get well) when i have cvid and the boys dont and we were leaving the office each visit with a sackful of allergy meds and when i say a sackful i mean he would place us on 4-5 different allergy meds everytime we went in his theory was it was an allergic reaction that needed to be shut down...needless to say i was still sick and the boys were hyped up on allergy meds with no change....
it is like any doc make sure their first belief is the belief to use common sense and add their medical knowledge to the mix.... i found i had to make appts give them a chance and see what they were able to do trial and error....
Do your research ... make some calls ... if I may ask, what part of the country do you live in?
I have been diagnosed since 1990. I had an internist who consulted with the immunologist at IDF-Immune Deficieny Foundation. It is the primary immune website that others are talking about. I finaly got referred to an hematologist who is interested in pidd who is at our medical center. First of all subq has been around for a long time. I heard about it for 10 years because Europe had it first. About 4 years ago I went on a study of the new suq Hizentra. It keeps your levels steady. I have not been sick for 4 years!!! So try a major medical center in your area. I would say your doctor is way behind the times. Change doctors! Marianne
www.primaryimmune.org
Immune Deficiency Foundation 40 West Chesapeake Avenue,
Suite 308 Towson, Maryland 21204 2008 IDF 1-800-296-4433