Inclusion Criteria:  Diagnosis of primary BPPV; Patients having BPPV of CSP or CSL (geo or apo, single or multi channel); Patients with recurrent BPPV, defined as two or more episodes over the last six months, or three or more episodes in the last 12 months; Informed consent.  Exclusion Criteria:  Patients under 18 years of age; Secondary BPPV; Vitamin D levels greater than 100 ng/mL (>250 nmol/L); Pregnant or breastfeeding.