Yes. Normaly people get diarrhea from it - so it's not a dangerous poison. But Zoro appereantly faints from that.
No, not really. He brought up Sanji getting his leg cracked and because of that he wants his leg to be much stronger - like it happens every time or something.
I answered with why nobody is saying Zoro's body needs to get more stronger when 1 stab is enough to knock him out?
Sanji's leg cracked back in PH which is 5 arcs back, yet people stil bring it up, but Zoro fainted this arc, yet nobody says anything.