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How long does it take before allergy drops work? I'm Dr. Manan Shah, I'm an ENT and allergist with Wyndly Health. Allergy drops are a form of immunotherapy, which is a method of changing your immune system for long-term allergy relief.
But they don't work overnight. Some patients will notice benefits as early as four weeks, but most patients will start to notice benefits somewhere between four weeks and six months.
You really want to work with your doctor to find the best dosing and protocol for you. If you have any questions, please let me know.