Doxylamine
Doxylamine is another antihistamine used as a sleep aid and to treat morning sickness. Wouldn’t it occur to you to take sleeping pills in the morning, unless you want to sleep all day? Therefore, the best time for this remedy is late in the evening.
Melatonin
Melatonin is a hormone which in our body is produced in the dark to improve sleep. Taking it additionally is usually advised to those who suffer from sleep disorders, as well as to those who are undergoing chemotherapy.
In the morning, the level of melatonin in our body drops, which gives us the opportunity to wake up and be alert. Therefore, drinking this supplement in the morning is at least illogical.