Without going into great detail, XEN1101 is basically an improved version of Retigabine/Trobalt; a discontinued epilepsy medication that some members of TT experimented with back in 2014.
The self-experiments garnered some positive results, but were also, unfortunately, accompanied by many nasty side effects.
The symptoms I recall people exhibiting the most were occular in nature; severe visual snow and floaters that never seemed to dissapear, even after discontinuing. But Trobalt was a very strong and dangerous drug, so it possibly caused life altering problems we never even became aware of; hence its cease of production and prohibition.
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