Overview of Shibo
Quick Facts
| Property | Description |
|---|---|
| Active ingredient | Ethyl Chloride (Chloroethane, C2H5Cl) |
| Form | Topical Spray (Pressurized Spray Container) |
| Pharmacological class | Local Anesthetic, Refrigerant Analgesic (Vapocoolant) |
| Common use | Temporary surface numbing prior to minor procedures |
| Origin | Synthetic (Halogenated Hydrocarbon) |
Shibo: Classification as a Local Anesthetic and Vapocoolant
Shibo is a single-ingredient preparation classified as a Refrigerant Analgesic or Vapocoolant, fitting within the clinical class of Local Anesthetics. This classification is clinically recognized for its ability to produce immediate, temporary desensitization of the targeted skin surface. The medicine’s functionality is defined by its rapid, physical cooling action, making it distinct from conventional topical agents that rely on chemical absorption or counterirritation. The specific formulation is often utilized to provide quick comfort in settings such as sports medicine or before minor dermatological procedures.
Composition, Form, and Origin of Ethyl Chloride
The active ingredient in Shibo is Ethyl Chloride (INN: Chloroethane, C2H5Cl), which is a synthetic halogenated hydrocarbon. The product is manufactured and delivered as a topical spray from a pressurized spray container for topical application. This form is central to its identity because the highly volatile liquid compound acts as its own active base and vehicle. The unique property of Ethyl Chloride is that its low boiling point enables the instantaneous creation of intense cold via rapid evaporation, a key principle essential to its anesthetic function.
General Purpose and Mechanism Principle
The general purpose of the medicine is to achieve instantaneous, localized pain control through thermal means. This is accomplished because the rapid expansion and evaporation of the volatile liquid causes an abrupt and significant temperature drop at the application site. This sudden chilling effect generates a transient sensory nerve ending blockade, resulting in the desired local skin anesthesia. This mechanism is effective for reducing immediate discomfort associated with minor trauma or necessary external procedures. This demonstrates the preparation's primary general utility as a rapid-acting tool for momentary surface desensitization.
Regulatory References

