Editor—Enzyme potentiation has always been controversial and unproved, and Radcliffe et al showed again that it doesn't work.1 However, the old method of allergy shots that has been around for over 50 years is still quite helpful and safe and endorsed by the World Health Organization as a useful treatment.2 Allergy desensitisation should be considered in those patients who are frustrated with symptoms that are poorly responsive to medications.
Competing interests: None declared.
References
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