Final answer:
The antidote for heparin toxicity is protamine sulfate. Protamine sulfate works by binding to heparin and neutralizing its anticoagulant effects.
Step-by-step explanation:
Heparin is an anticoagulant substance that opposes blood coagulation. The antidote for heparin toxicity is protamine sulfate. Protamine sulfate works by binding to heparin and forming a stable complex, thereby neutralizing the anticoagulant effects of heparin. It is commonly administered in cases of heparin overdose or when there is a need to reverse the anticoagulant effects of heparin quickly.