A poisoned mob will take 10% damage if healed. For example a mender heals 200, the POISONED MOB takes 20 damage. This don't work for silkwing, they just heal 10%, for example if they heal 50, 50, 50, they do 5, 5, 5 to the POISONED MOB. It's a bug, I asked all that stuff at the support.
A poisoned healer heals same amount, wont take damage from healing, but still if beeing healed.
Poisoning gremlins right wenn they use their pill, they kill themselves.
Poison decreases the defense by 10% and decreases the attack power by incredible 50%.

Players won't take damage from love puppies, because if a player is poisoned, he just can't get healed, so he can't get damage by healed - because he can't be healed :D
Anyway, also players will take 10% more damage and deal 50% less.

Any other questions?

No, JK's regenerate doesn't make it take any damage if it's poisoned, it just doesn't heal. It may be bugging out for some reason, but what you're seeing isn't anything to do with the poison at any rate.

It was stated in patch notes sometime in the past that they added code to prevent monsters with regeneration from dying/taking damage via poison(because of the regenerate, but I've never seen a mender in the JK fight) - probably because you could make JK's regenerate win half the fight for you if it was slowly killing itself. I'll try and find the notes.

Edit: http://forums.spiralknights.com/en/node/1603

- Poison no longer inverts monster regen, it simply prevents it from occurring. If a monster is healed by another while poisoned, it will still take damage.

Poison used to cause damage to JK, but it hasn't for nearly 6 months.

Thanks for posting the numbers you got from support. I'm not big on giving advice on forums, most people do what they want/what they want to hear anyway, but I always found it incredibly short-sighted to pass the VV off. That sounds pretentious, but think about it. Hell, read the oh, noes!!!1one:sad: T3 fiend threads. 50% less damage sound very appealing all of a sudden.

Well there is a youtube video of Silkwings. They still heal, but pretty less. I guess JK heals himself too, just 5, 5, 5, 5 instead of 50, 50, 50...

I wrote this to a supporter long ago, he said me they all should deal damage to poisoned, even regeneration like jelly king. He said it would be abug if it does not so. I saw later a vid of a silkwing HEALED a poisoned wolver. never died, restored back to full after a long time. Menders used to kill everything.
I guess you're right they really fixed it! And now the other question because of the patch that says that regen will just stopped instead of damaging. whats right there?