Food allergies are very common conditions amongst pediatric complaints, and cow's milk protein allergy (CMPA) is the most common kind in childhood. Despite its prevalence, there are controversies in the literature about diagnosis and conventional treatments. Homeopathy offers a valuable option for approaching these pathologies, since it acts according to the characteristic symptomatic totality of each case, that is, in an individualized way. This report is about a child, male, with a previous diagnosis of CMPA, with frequent respiratory crises and recurrent use of antibiotics, in addition to being submitted to a restricted diet. His mother looked for homeopathic treatment as an alternative to current therapy, since the results obtained so far were unsatisfactory. The case was conducted according to the precepts of classical Hahnemannian homeopathy, obtaining a single medicine according to the repertorizationmethod. We opted for treatment with Lycopodium clavatum, considered the most similar according to the individuality of the patient. The child was followed up for a little over a year, and significant clinical improvement of the initial complaint was observed, in addition to better quality of life for the child and family.