There is a more recent article on managing insomnia. See: I dream of sleep: managing insomnia” https://bpac.org.nz/2017/insomnia-1.aspx
Insomnia affects many adults in New Zealand, however management is only required if it leads to an impairment of daytime function. Non-drug interventions are first line treatment. If pharmacological therapy is required, a short-acting benzodiazepine or zopiclone is preferred.