I am not aware of such sources. Could you provide a link(s)?
I have read of rare law enforcement cases where a restrained suspect "broke the cuffs" but such cases seem too isolated to attribute causality to a particular drug.
In the thread article, how a "properly" tazed suspect would be unaffected suggests something else is at hand. Where are the publications in medical journals investigating how this can happen?
I'm not saying they don't exist but if you are aware of any, please provide a link.
Here is a place to start.
People use phrases like "super human strength" when what they actually are talking about is someone so drugged that they do not feel pain and they have an enormous amount of adrenaline pumping.
She did not go down from the pain of the taser because the drugs she was on set the pain aside. The adrenaline can make you do things that may even result in bones breaking and muscles being torn. As soon as it wears off you will pay a major price but at the time you keep going.
Also, and this is something people do not consider, she did not care if she hurt them while they were concerned about hurting her. It gives you an advantage in a struggle and is why handling children who are in a rage can be such a problem. Sure you can over power them but you also do not want to do any damage. And when you are dealing with a clawing, hitting, biting, out of control child that can be a challenge.