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The Boston Globe

Health & wellness

Be Well

Allergy drops as effective as shots, study finds

Oral allergy drops may be just as effective as traditional allergy treatments, including allergy shots, a review of studies by researchers at Johns Hopkins Medicine found.

The researchers looked at 63 published studies involving more than 5,000 allergy sufferers and found that drops, which are typically placed under the tongue and contain small amounts of allergens such as ragweed, dust mites, and pollen, worked just as well in preventing and treating allergy and asthma symptoms as shots. In some of the studies, the researchers found at least a 40 percent decrease in symptoms among oral drop users compared with those who used other treatments, including antihistamines, inhalers, or nasal sprays.

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