What medications cause a side effects causing insomnia?

Many do: Many medications cause insomnia, too many to even begin to list here. Caffeine commonly causes insomnia as well. Check with your Doctor. There are physical and mental causes for insomnia. You first need an evaluation and diagnosis for your condition. Try and eliminate things that can contribute to insomnia. Try and avoid treatments for insomnia which can become habit forming. Good luck.

Adhd meds: Psychostimulants if given too late in the day may cause insomnia.