For the past few months, I have been unable to fight the "need" to take a nap, "immediately" following my usual one cup of morning coffee... Does anyone know why it's knocking me out? When for many years, it was my wake up, begin my day, go to!!! Now, I can literally not keep my eyes open before I've even finished my one cup of morning coffee!!! And even over the many years, I very rarely have a second cup, and if I do it's in the evening following dinner....(not anymore).

Kate, Is this still happening to you? I'm going through the same thing, and I'm usually pretty sensitive to the effects of caffeine. This morning I had an unsweetened iced tea followed by two cups of coffee, and can barely keep my eyes open.

This is a very old thread but I found it on a search because coffee does the same thing to me! Within 15 minutes of an unsweetend cup of morning coffee I can't hold my eyes open even if I was perfectly alright and awake before I drank it.

After waking this morning from a good nights sleep, I had my one cup of coffee (half tsp creamer). I literally am fighting to keep my eyes open! I'm not Tired...I am Sleepy. Just started about a yr ago. Everyone says stop drinking coffee! That's not the point...WHY is it immediate???

Both my father and I can drink cup of coffee and go to bed immediately. Coffee ha never help me to stay alert. The only "exception" if I mix coffee and alcohol - I am very sleepy but can't fall asleep. Never could figure out why.

That is why it's extremely important that you alter this gas normally as you may.