二苯基-4-哌啶甲醇，又称为阿扎环醇（英语：Azacyclonol）、阿扎环醇或氮杂环醇（英语：Ataractan、Calmeran、Frenoton、Frenquel、Psychosan），也有人称它为伽玛哌苯甲醇（英语：γ-pipradol），是一种芳香族有机化合物，包含有哌啶（氮杂环）、苯和醇（羟基）等官能基，其化学式为C₁₈H₂₁NO，常温下为固体，外观为白色至浅米色结晶粉末，是一种药物，即所谓的ataractive，是用来减少精神病患者的幻觉用的药剂。它也被称为镇静剂和安定药，但这些定义是不准确的，因为它实际上不具备这样的性质。虽然二苯基-4-哌啶甲醇是哌苯甲醇（二苯基-2-哌啶甲醇）的位置异构体，但他没有使精神兴奋的效果，反而有轻度抑制作用。

Azacyclonol (trade names Ataractan, Calmeran, Frenoton, Frenquel, Psychosan), also known as γ-pipradrol, is a drug which is a so-called ataractive, or agent which diminishes hallucinations in psychotic individuals. It has also been called a tranquilizer and antipsychotic, though these definitions are not accurate as it does not actually possess such properties. Despite being a positional isomer of pipradrol, it is not a psychostimulant, and instead has mild depressant effects.