What tends. To work better for axeinty. Atarax or xanax (alprazolam)?

Anxiety. The one that your mental health professional prescribed for you specifically for the anxiety you are experiencing. Atarax is an antihistamine whereas xanax (alprazolam) is a fast acting muscle relaxer that is used for acute anxiety. Please ask your doctor before simply treating.
Both work well BUT. Atarax is relatively safe (altho as with all drugs some sideeffects possible). Xanax (alprazolam) is a benzodiazepine which class of drugs are potentially addictive if taken over a longer period of time - best used for a short period otherwise there are other prescription drugs which work - generally the class of drugs knon as antidepressants.