Pharmacology Which of the following statements is not true for heparin : A Acts by activating anti-thrombin III B Protamine sulphate antagonizes its action C Requires aPTT monitoring in patient D Has only in vivo anticoagulant action 💡 Explanation Which of the following statements is not true for heparin : ✓ Correct Answer: D. Has only in vivo anticoagulant action