2F-DCK (2-Fluorodeschloroketamine) is a synthetic dissociative anesthetic and a close structural analog of Ketamine. In recent years, it has frequently appeared in the form of a “Keta Spray” (nasal spray), often marketed as a “legal” or “research chemical” alternative to traditional ketamine.

What is 2F-DCK?

Chemically, 2F-DCK is nearly identical to ketamine, with the only difference being a fluorine atom replacing the chlorine atom in its structure.

Potency: Most users and researchers report that 2F-DCK is roughly equal in potency to ketamine, though some find it slightly more potent when taken orally.

Duration: It generally lasts longer than ketamine. While a ketamine “trip” might peak for 45–60 minutes, 2F-DCK can last 2 to 3 hours, with a longer period of residual “grogginess.”

Effects and Experience

As a dissociative, 2F-DCK works by blocking N-methyl-D-aspartate (NMDA) receptors in the brain.

• Subjective Effects: Feelings of detachment from the body (dissociation), euphoria, distorted perception of time and space, and at high doses, a “hole” (total loss of consciousness and sensory input).

• Physical Effects: Numbness, loss of motor control (the “k-walk”), dizziness, and slurred speech.

• Medical Research: Some preliminary research (as of 2024–2026) has explored 2F-DCK for treatment-resistant depression, similar to how Spravato (Esketamine) is used, but it is not yet an approved medical treatment.