In Type 1 Diabetes (T1D) in children, close to the onset the requirements of insulin are often reduced. This represents a transient recovery of endogenous insulin secretion named "honeymoon" because transient and followed by a progressive decline in C-peptide secretion. This case report describes the effect of administration of high dose vitamin D and Ω-3 fatty acids on T1D progression in a 8-year-old child. At today after one year and a half from the onset of T1D, the subject shows a near-normal blood glucose with the administration of 1.5-2 UI of insulin once a day. Thus this report may be of assistance to design additional studies to determine and validate the effect of administration of vitamin D and Ω-3 fatty acids on the progression of T1D.