Will a whole 0.25 xanax (alprazolam) cause me to feel spaced out or cause derealization? this is why i'm nervous to take whole one but half don't relax me much.

Xanax (alprazolam): Is an anxiolytic frequently prescribed for panic attacks with many side effects. Your doctor has prescribed this medication because he/she has judged that the benefit to you is greater than the risk of side effects. It is not true in your case. Rec.: see your doctor for medication adjustment/change or referral to psychiatrist.