The Cure to the Clone

"Has there ever been a cure developed for the clone troopers' accelerated aging?" So this has been a question that I’ve seen a few times, and a lot of fix-it fics and general speculation has come up to address it, but I wanted to take the time to answer this question with actual SW Legends canon, since a good many people don't seem to be aware of it ... or would rather not read the series it's from, or cannot get through the series (both understandable).

Inside you'll find everything you need to know about the cure: what it is, how it was made, who made it, how it works, etc. This is meant to, mostly, be a resource or reference guide, as well as an answer to a popular question.

There's also a short answer and a long answer, in case you don't have time to read the full length of the post. Short answer is at the top, and conclusion at the very bottom.