"i started this medication (7.5 mg) to treat insomnia that my psychiatrist thought was due to underlying anxiety disorder.  like others, i felt very dopey and groggy out the first 4-5 days.  have now been on the medication for 2 weeks and this has abated, but still with lower energy level during daytime.  i have found that a claritin-d in the am reverses this feeling as well as reversing the increased appetite.  insomnia is improved - still a few days with difficulty falling asleep, but once i&#039;m asleep i&#039;m out until my alarm goes off."