Deep Sleep Concoction

Being sick a lot of the times equals to being in pain and it is true doubly so, when you get injured on top of that. Sometimes body needs rest and it also needs some assistance with it. In the ancient times only underground organisations and various schemers were working with sleeping pills and various different drinks, but they usually did not really care if that person eventually wakes up or not.
Deep Sleep Concoction is a special kind of tea-like drink that is safe to use as an anesthetic. It is mostly made out of dried Araki leaves that grow in the inhospitable Western Plains region and get imported into the kingdom by the Unull nomadic tribes that used to rule over these lands in the past but were eventually expelled.
The exact recipe varies depending on what kind of patient you need to treat and how long and how deeply you need them to be asleep for. Different herbs are added according to person's age, weight and the conditions are in. The biggest medical breakthrough came when a scholar was able to describe in details how to make a concoction strong enough that the patient is able to withstand difficult surgeries like amputation without being awoken by the immense amount of pain, but also would not end up in a coma afterwards and instead they would be able to wake up and make full recovery.
It is a very important breakthrough for any healers and embroiderers, who have to deal with heavy injuries on a daily basis, especially after the recent revolt that started an entirely new regime, after any kind of natural disaster that usually renders many people injured and weak and also in cases some raids will happen again in the future. A lot more people are being able to get help this way without dying from trauma before the surgery gets finished and the embroiderers do not have to rely on speed of their craft, but can focus more on being thorough and do their absolute best to help the patient heal.