Answer the question about text:

[ Blue Pill = sleeping pill , Unisom , or maybe it 's the Target brand of Unisom . ] 8/14/08 7:27 pm Well , I think I caught up on sleep last night . Steve thinks the iced tea I ' ve been drinking on the way home may be disrupting my sleep . He usually brings me iced water , but lately I ' ve requested iced tea .

What is the reason I ca n't sleep ?
The iced tea keeps me awake .