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Table 1 Guidelines for discontinuation of medications that might interfere with interpretation of OFC

From: An epidemiological investigation of food allergy among children aged 3 to 6 in an urban area of Wenzhou, China

Medication

Last dose before OFC

Oral antihistamines

3-10d

Cetirizine

5-7d

Loratadine

7d

Oral H2 receptor antagonist

12 h

Oral long-acting β2-agonist

24 h

Theophylline (liquid)

24 h

Leukotriene antagonist

24 h

Oral/intramuscular/intravenous steroids

3d-2wk