Does sublingual immunotherapy (drops under the tongue) work just as well as subcutaneous immunotherapy (allergy shots) for treating my chronic allergic conjunctivitis (eyes)?
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Cochrane database shows a moderate reduction in allergy symptoms from sublingual immunotherapy. I would recommended it over injections due to cost and convenience.
1. Calderon MA, Penagos M, Sheikh A, Canonica GW, Durham S. Sublingual immunotherapy for treating allergic conjunctivitis. Cochrane Database of Systematic Reviews 2011, Issue 7. Art. No.: CD007685. DOI: 10.1002/14651858.CD007685.pub2.