氯胺酮 （英語： ketamine）又譯 愷他命[2] 、 克他明[3]，口語常稱 K他命，是一種唯一具有 鎮痛作用 [4]，非 阿片类 非 巴比妥类 靜脈全身 麻醉藥， 藥理學 屬NMDA受體的非競爭性阻斷劑，化學屬 苯环己哌啶 的衍生物。 由於氯胺酮有 精神活性，會被濫用作 毒品，而另有許多 俗稱： K仔 、 K粉 、 克他命 、 小姐 、 Special K；在 台灣，經常被稱為 褲子 （相對於衣，衣代表的是 Ecstasy 的第一個字母）、 下面 （相對於穿在上面的衣服）。 日常所見的氯胺酮產品的主要成份是 盐 …

2024年8月27日 · Ketamine is used as an anesthetic for surgery, a treatment for depression (off-label), and is a drug of abuse. Includes ketamine side effects, interactions and indication

Ketamine is a dissociative anesthetic used medically for induction and maintenance of anesthesia. It is also used as a treatment for depression and in pain management. [19] . Ketamine is an NMDA receptor antagonist which accounts for most of its psychoactive effects. [20]

Ketamine is an approved medical product as an injectable, short-acting anesthetic for use in humans and animals and as esketamine (Spravato®; the active form of the drug) as a nasal spray for treatment resistant depression.

2025年1月31日 · Is ketamine a treatment for depression? What are the risks? Learn about the uses, benefits, and side effects of ketamine.

2024年1月26日 · Ketamine is an NMDA receptor antagonist, meaning it blocks the N-methyl-D-aspartate neurotransmitter in the brain. It was developed in the 1960s and used as a battlefield anesthetic in the Vietnam War, as well as clinically in health care settings.

2024年1月30日 · Ketamine, through its NMDA antagonistic action, works rapidly in controlling symptoms of depression and acute suicidal ideation. Ketamine can elevate the levels of glutamate in the brain, stimulating synaptogenesis and elevated levels of brain-derived neurotrophic factor (BDNF). Ketamine may interact with the sigma receptors. It works by ...

Ketamine is a dissociative anesthetic that has some hallucinogenic effects. It distorts perceptions of sight and sound and makes the user feel disconnected and not in control. It is an injectable, short-acting anesthetic for use in humans and animals.

Esketamine has been found to be more potent, offering three times stronger analgesic effects and 1.5 times greater anesthetic efficacy than arketamine. It provides smoother anesthesia with fewer side effects and is widely used in clinical settings due to its neuroprotective, bronchodilatory, and antiepileptic properties.

第三級管制藥品，主要功能為阻斷大腦中興奮性物質的作用，使大腦不活躍、失去反應，達到麻醉效果。 低劑量下，會有溫和的催眠效果、緩解疼痛，改變視覺和聽覺；適當劑量時則會開始產生自我解離的幻覺以及輕度的癱瘓；再更高的劑量會導致近乎完全的麻痺、失憶和鎮靜。 阻斷大腦中興奮性物質的作用，使大腦變的不活躍、失去反應，達到麻醉效果。 血壓升高、心跳加速、幻覺、夢魘、意識不清、激躁、行為異常、眼球震顫、張力過強、強直性及陣攣性運動、紅斑、麻疹樣 …