We would like to thank Juliet Dawkins for her help in assessing risk of bias in the original version of this review. ACJ and JW would like to thank their supervisor Prof. Gunnar Tobin for his invaluable assistance with organising the work placement at Bond University. They also wish to acknowledge the support of The Sahlgrenska Academy at Göteborg University; Farmaciforbundet and the Swedish Pharmaceutical Association. The review authors also wish to thank the following people for commenting on the first draft protocol: Amy Zelmer, Betsy Blazek‐O'Neill, Richard Rosenfeld, Nelcy Rodriguez and Paul Glasziou. We would also like to thank the following people for commenting on the updated draft: Anne Lyddiatt, Richard Rosenfeld, Sree Nair and Paul Glasziou. In writing the original review, the review authors wish to thank Katja Ullrich for translating German language articles and assistance writing the background of the protocol. Also, Kumar Kuldeep for commenting on the statistical components of the draft review. Finally, we wish to thank Michelle Morgan for assisting us with information on the active ingredients present in naturopathic herbal extract ear drops.