What kind of doctor prescribed it for you? An immunologist? Seems more accessible than LDI. Why was the environmental and food allergen chosen? Do you have a lot of environmental and food allergies? How much does LDA cost?
Note that this is not a common treatment, so you'll have to find a practitioner in your area. Here's a list I found of doctors: http://www.drshrader.com/lda_physicians.htm
I'm not advocating the treatment yet, and won't do so until I've had personal, long-term success with it. Fingers crossed, though.