I've now been on Lexapro for over three months about.
I WISH weight gain were a side effect but I have yet to gain any weight. :(
My side effects: waking up in the morning with a racing heart, and having to take an Ativan to calm down, and feeling slow, like reacting to situations extremely slow (such as people asking me questions, and how long it takes me to reply) as Lexapro seems to slow you down on higher dosages. It makes my mind feel a bit slower, but I like that, I'm not thinking as fast as I normally do which cause my panic attacks. I'm thinking like I used to.
My side effects on Lexapro lasted for a couple weeks, and anytime I upped my dosages I also had side effects, except more recently I haven't had side effects when I upped it from 15 mgs to 20 mgs.
Perhaps your fatigue is from the Klonopin, that would make the most sense. Also I take my Lexapro in the morning. If you feel fatigued, then take your Lexapro at night if you NOW take it in the morning.
Klonopin can also make you tired, as it's effects do last a long time. I take Ativan once and sometimes twice a day and at first it did make me extremely drowsy but now I am used to the Ativan.
By the way, Ativan is a lot like Klonopin, they are both benzos.
I have a lot of migraines as well, but those stem from my TMJ (Temporomandibular joint disorder), a very common disorder where the tissues in your jaw joint become inflammed from excessive clenching and grinding.
I also feel agitated or irritated at times on the Lexapro, but then again I'm just restless from not doing as much as I used to I think.
Lexapro's side effects also have headaches listed on their website, as well as fatigue, nausea, diarhhea, and other things. Check out Lexapro.com.
Or google "Lexapro side effects".
I hope this helps.
"Be glad of life because it gives you the chance to love and to work and to play and to look up at the stars."
DX: Panic Disorder, Depression, TMJ (Temporomandibular Joint Disorder), Chronic Migraines
RX: Ativan/Lorazapam (1 MG a day), Lexapro (15 MG a day), Tylonel for the TMJ and Migraines