Health Allergy Specialist

I am considering seeing an allergist for allergy drops for anaphylaxis reactions to bee and hornet stings. But from what I read and hear they are not FDA approved and there is no scientific evidence that they really work. They may work for other allergies though. Has anyone taken these drops for bee stings and how well are they working. I have an epi-pen and benadryl injections at home if I get stung again this year. I want to start some sort of therapy very soon.