Each prescription is a personalized solution for each patient according to the type and severity of his or her allergy. Drop prescriptions contain precise amounts of the allergen the patient is found to be allergic to upon testing.
In your prescription documents, you’ll find details of the specific antigens in your prescription. That may include individual antigens (i.e. dog, dust mite) or mixes (i.e. tree mix).
Antigens are put into a glycerin solution for stability.
There are no other preservatives added in the prescription formulation.