So, with novice TK, this guide says i should be able to meditate poisons away, but I can't.
The Meditation line allows a TKA to do all sorts of useful things that basically make them a mini-doctor. At each level of meditation you can do certain things, as follows:
Novice: Remove Poison and Bleeds effects.
Meditative Techniques 2: Power Boost ability and remove Disease effects.
Meditative Techniques 4: Force of Will ability and heal your own wounds!