Anti-Squama (Ant-e-skwa-ma)

In 975 AC, the vile necromancer Shadescale was brought low by a small team of heroes and their noble sacrifice. While this ended his desire for world domination and tyranny, the wizard's last breath was used to curse the world. He had collected the souls of various dragons in the past and used his knowledge of biology to "revive" their biology in an altered state, turning their very essence into a disease that struck the souls of the afflicted, and slowly turned them into mad dragons of their own. This was the beginning of the condition known as Soul-Scale.
30 years of tireless work later, mostly centered in Hippolytan hospitals where the condition ravaged the most, and while there's no direct cure, there are instead various treatments that hold back the draconic transformation. Injections, medicines, and even some magical items such as bands for afflicted limbs. While they are not easy to come by and have a slew of side effects, it's the only thing that works to prevent the condition from taking over. Other than death, that is.

Utility

Anti-Squama is carefully injected into the bloodstream of a patient, who is then aided with healing magic so that their own natural energy will respond to the new energy, meaning the Anti-Squama will be fused with their own magical energy, which will begin its work against the draconic energy of Soul-Scale. In theory, Anti-Squama could also be used to prevent such things as Lich Limb, Mana Rot, Sanguine Deterioration, or even Mana Deficiency, but as its current state is specialized against Soul-Scale, time will tell if it truly can be adapted.

Inventor(s)

While the true credit for this medicine can be given to any tens of dozens of scientists who made it possible, most of the legwork was done by those licensed by the Pan-Eddan Medical Research Guild in Penthesilea. The most prestigious member of the medical staff responsible for this is a High Elf, Aster de Foret.

Access & Availability

Due to the complexity of the formula, along with what many would perceive as aristocratic greed in Hippolyta, Anti-Squama isn't easy to come by. Finding vendors that provide it is difficult enough outside of Hippolyta, even within its borders you'll mainly find it in the populated cities, but even if you locate one it could cost anywhere from 10 Gold to 10 Platinum depending on scarcity (IRL $1,000 to $10,000).

Complexity

While the on-paper steps to produce Anti-Squama isn't difficult; 1) Store a piece of natural Mana in a specialized vial, 2) Treat natural Mana with antibiotic magic derived from specialized plant pollens, 3) Store in a depressurized freezer for up to 24 hours, 4) Carefully inject into the patient and allow an additional 24 hours for bodily assimilation; the actual finesse required to do any of these steps means that only the most skilled and careful members of the medical field are qualified to do it.

Discovery

It was hard to develop a medicine to heal something that affects the very soul of a person, but Hippolytan scientists were able to find a way to use artificially enhanced mana supplements to counteract the invasion of Draconic mana into an individuals body. While it cannot currently reverse changes that've already been made, it can stop further progress for a small amount of time.