http://www.medications.com/effect/view/12949 My 4 year old experienced night terrors and extreme night sweats from amoxicillian. She also got rather drowsy. My son broke out in hives the very first time he had it, which is extremely rare and means he's severely allergic to it. Seeing as both me a Sun, 21 Dec 2008 09:11:09 -0500 http://www.medications.com/effect/view/12949?item=15414 We have the same experience with our 4 yr old son. What did you do: - get a different prescription for the antibiotic? It's been four nights in a row now and he is getting progressively worse with the night terrors. Last night was crazy bad. Bob B. http://www.medications.com/effect/view/12949?item=15414