Certain types of medication can cause insomnia.
Dr Sin Gwen Li, a consultant from the Department of Psychiatry at Singapore General Hospital, says the list includes anti-hyper tension medicine like beta blockers and Ace inhibitors; cholesterol-lowering agents like statins, corticosteroids, non-sedating antihistamines and certain antidepressants and asthma medicine.
Another culprit is the stimulant pseudoephedrine that’s found in Panadol Cold Relief.
And just as you would avoid drinking caffeinated drinks like coffee or tea later in the day, be wary of caffeine in medication like Panadol Extra.
Other stimulants that can affect your sleep include nicotine, from cigarettes or nicotine patches, and alcohol.
“While most people fall asleep more easily after drinking alcohol, it’s important to know that alcohol inhibits the dream phase of sleep and causes more frequent night-time wakings, on top of making a person want to pass urine more often during the night. Overall, it leads to poorer quality sleep,” says Dr Sin.