About melatonin Who can and cannot take it How and when to take it Side effects Pregnancy, breastfeeding and fertility Taking it with other medicines and herbal supplements Common questions Related conditions Insomnia Useful resources Healthtalk: videos of real stories of insomnia in later life healthtalk.org Mind: charity – how to cope with sleep problems www.mind.org.uk Royal College of Psychiatrists: sleeping well www.rcpsych.ac.uk