Most teething gels are quite safe for the baby. All the teething gels recommended on this page are safe and effective. However, some Teething Gels contain harmful products such as Benzocaine, Belladonna and Lidocaine which are unsafe and can cause rare but deadly side effects in children, especially those 24 months and younger. Benzociane has been connected to a rare but potentially serious blood condition known as methemoglobinemia (MetHb). United States Food & Drug Administration (FDA), American Academy of Pediatrics (AAP) & Health Canada all advise parents, and caregivers to not use over-the-counter products containing benzocaine,Lidocaine or Belladonna for teething pain. Please see our section of Teething gel – we do not recommend to find out the gels containing Benzociane/Lidocaine