Calcium-channel-blocking drug which is a piperazine derivative antihistamine with sedative effects.Used in prophylaxis of migraines and dizziness. At latest update no published data on excretion into breast milk were found.It may increase prolactin level (from Cortelli Formisano 1985 to 1991).Despite its high protein-binding capacity, because of a very long half-life span (18 days), there is a higher risk of excretion into breastmilk. A known and safer alternative should be preferred until more published data on this drug related to breastfeeding is available, - e.g. Propranolol, Metoprolol, Sertraline, Escitalopram, Amitrptilina or Valproate for Migraine prophylaxis (Pringsheim 2012, Davanzo 2014) and Nimodipine, Betahistine or Ginkgo biloba for vertigo prophylaxis, especially in the neonatal period and in case of prematurity.