Foran

Anesthesia is a type of anesthesia during which artificial suppression of consciousness and pain relief occurs. Unlike conventional anesthesia, which affects only one sense (for example, vision or hearing), anesthesia sleep is universally deep, since it completely turns off consciousness. Widely used in many fields including surgery, dentistry, therapy and medical research. To survive a drug operation, a person is usually put into deep sleep by inhaling an inhaled gas or liquid).

"Firan" (or "fiziol") is the first volatile inhalation drug that was used as a means for general anesthesia. Synthesized by Joseph Fitzgerald in 1