How long can I expect the effects of allergy drops to last?

A benefit of immunotherapy — whether allergy shots or allergy drops — is that it can alter the course of allergic disease by treating the root cause, not just the symptoms. Once tolerance is built, it can be permanent for many patients.

Key studies have been conducted to explore the long-lasting effect of allergy drops, including a 10-year study on children with asthma that demonstrated drops maintained effectiveness long after treatment stopped.

But even the best treatments won’t work if you don’t stay with them. Like allergy shot treatment, it’s important to stay with allergy drop treatment until your doctor has determined it can be discontinued to give you the best chance of long-term effectiveness.