Mandibular advancement prosthesis (MAP) is infrequently used in the UK at present for snoring. First-line measures include dietary and weight modification for those that require it. Where such measures are unlikely to be useful or have already failed, surgery is sometimes utilized as a second-line treatment modality. We evaluate the use of MAP as an adjunct to first-line measures, with emphasis on efficacy, side-effects and patient compliance. Case notes of 30 snorers were reviewed and followed up with a questionnaire. Despite being useful in alleviating snoring, the prosthesis was poorly tolerated. Side-effects include increased salivation, temporomandibular joint pain, intra-oral and myofacial discomfort. Patients who persevered with the prosthesis found the early side-effects resolved after a few weeks and snoring reduced. MAP can be used in the initial management of snorers but patients need to be educated and encouraged, especially in the first few weeks.