An antidote protects you against toxins. Upon drinking an antidote, you gain an item bonus to Fortitude saving throws against poisons for 6 hours.
Type Lesser;
Level 1;
Price 3 GP;
You gain a +2 item bonus.
Type Moderate;
Level 6;
Price 35 GP;
You gain a +3 item bonus.
Type Greater;
Level 10;
Price 160 GP;
You gain a +4 item bonus.
Type Major;
Level 14;
Price 675 GP;
You gain a +4 item bonus, and when you drink the antidote, you can immediately attempt a saving throw against one poison of 14th level or lower affecting you. If you succeed, the poison is neutralized.