Boiron Coryzalia for Children. Coryzalia is an all natural homeopathic remedy formulated for children between the ages of 6 to 36 months. A completely safe, natural way to provide relief to your baby for the duration of symptoms associated with the common cold. Coryzalia contains a specific blend of homeopathic ingredients indicated for runny nose, sneezing, nasal congestion, and eye irritation. This formula has no side effects and best administered at the first sign of a cold.