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A 52-year-old male attended a dental hospital following a referral from a royal infirmary regarding hyperzincaemia (zinc toxicity) and hypocupraemia (low copper levels). The patient had been using an excessive amount of over-the-counter zinc oxide temporary dental material for the previous 18 months owing to a phobia of dentists and misconception about amalgam fillings as caries. This resulted in acquired peripheral neuropathy, muscle weakness and the inability to walk without wheelchair aid. We present the reasons clear warnings should be in place and education is required for the general public when self-prescribing with ‘at-home’ dental kits.CPD/Clinical Relevance:It is important to break down patient barriers to accessing dental care.