Zyrtec-D(on't take before sleeping).

Common side effects may include: Dry Mouth, Fatigue, Insomnia, Sleepiness.

For the first time in a long time, I seem to have fallen under the category of common people experiencing common side effects. It has been a long time since my body actually reacted to an unknown substance. But here I am at four o'clock in the morning - wide awake.

Four hours ago, at 10pm, a Zyrtec-D was taken. Shortly after, I tried going to bed because it had been a long day for me. Little did I know the damn tablet was going to keep me up all night.