According to general dosage guidelines, this medicine may be given to babies between 1 and 6 months at 1 teaspoon (5 ml) three times daily. However, even at 6 months of age, it should not be used routinely; administration must only be done under the direct advice of a paediatrician, who can determine whether it is appropriate based on the baby’s individual condition and medical needs.

Himalaya Bonnisan Liquid is generally recommended only up to 3 years of age, and since your child is 4 years old, there is no established dosage; therefore, it should not be given without medical supervision, and the appropriate course of action is to consult a paediatrician who can advise whether it is suitable at all or suggest a safer alternative.