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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

MedicationLast dose before OFC
Oral antihistamines3-10d
Cetirizine5-7d
Loratadine7d
Oral H2 receptor antagonist12 h
Oral long-acting β2-agonist24 h
Theophylline (liquid)24 h
Leukotriene antagonist24 h
Oral/intramuscular/intravenous steroids3d-2wk