Although rare, anaphylactic reactions induced by proton pump inhibitors have been reported. The presence of cross-reactivity between different members of the group is not clear. We studied 9 patients with adverse reactions to omeprazole, Clinical symptoms appeared immediately in 8 patients and after 4 hours in 1. Symptoms ranged from urticaria/angioedema in 7 cases to anaphylaxis in 2 cases. Skin prick tests and oral controlled challenge tests with omeprazole, lansoprazole, and pantoprazole were performed. Skin prick or intradermal tests with omeprazole were positive in 8 patients. Four were also positive to pantoprazole. Prick tests with lansoprazole were always negative. Lansoprazole was administered to all 9 patients, with good tolerance in 8. Only 3 patients were challenged with pantoprazole and developed widespread urticaria. We present 9 patients with immunoglobulin E-mediated allergy to omeprazole. In most of our cases, lansoprazole proved to be a good alternative treatment.
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Hosp Univ Gran Canaria Dr Negrin, Secc Alergol, Dept Allergol, Las Palmas Gran Canaria 35010, SpainHosp Univ Gran Canaria Dr Negrin, Secc Alergol, Dept Allergol, Las Palmas Gran Canaria 35010, Spain
Garrido, S.
Cumplido, J. A.
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Hosp Univ Gran Canaria Dr Negrin, Secc Alergol, Dept Allergol, Las Palmas Gran Canaria 35010, SpainHosp Univ Gran Canaria Dr Negrin, Secc Alergol, Dept Allergol, Las Palmas Gran Canaria 35010, Spain
Cumplido, J. A.
Rabano, A.
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Hosp Univ Gran Canaria Dr Negrin, Dept Pharm, Las Palmas Gran Canaria 35010, SpainHosp Univ Gran Canaria Dr Negrin, Secc Alergol, Dept Allergol, Las Palmas Gran Canaria 35010, Spain
Rabano, A.
Martinez, D.
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Hosp Univ Gran Canaria Dr Negrin, Secc Alergol, Dept Allergol, Las Palmas Gran Canaria 35010, SpainHosp Univ Gran Canaria Dr Negrin, Secc Alergol, Dept Allergol, Las Palmas Gran Canaria 35010, Spain
Martinez, D.
Blanco, C.
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Hosp Univ Gran Canaria Dr Negrin, Secc Alergol, Dept Allergol, Las Palmas Gran Canaria 35010, SpainHosp Univ Gran Canaria Dr Negrin, Secc Alergol, Dept Allergol, Las Palmas Gran Canaria 35010, Spain
Blanco, C.
Carrillo, T.
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Hosp Univ Gran Canaria Dr Negrin, Secc Alergol, Dept Allergol, Las Palmas Gran Canaria 35010, SpainHosp Univ Gran Canaria Dr Negrin, Secc Alergol, Dept Allergol, Las Palmas Gran Canaria 35010, Spain
机构:
Univ Hong Kong, Queen Mary Hosp, Div Rheumatol & Clin Immunol, Dept Med,Pokfulam, Hong Kong, Peoples R ChinaUniv Hong Kong, Queen Mary Hosp, Div Rheumatol & Clin Immunol, Dept Med,Pokfulam, Hong Kong, Peoples R China