Safety fears over asthma drug after young children suffer severe side effects

Campaigners call for more warnings on montelukast, after reports of night terrors, depression and other mental health events

Children as young as three have suffered traumatic side effects from a blockbuster asthma drug now under review by the UK drugs regulator.

Families say asthma patients, including many children, are not properly warned of the risks from the commonly prescribed drug montelukast.