AN ANTI-COAGULANT FORMULATION AND METHOD FOR PREPARATION THEREOF The present invention describes an anti-coagulation formulation and method for preparation thereof. The present invention describes herbal anticoagulation formulation made-up of Citrus lemon, sodium bicarbonate and potassium bicarbonate. This invention also provides simple method for formulation of dry powder anti-coagulant containing Citrus lemon, sodium bicarbonate and potassium bicarbonate. This dry powder formulation can be used for various applications like for blood testing in laboratory and storage of blood in blood bank. This formulation can be indicated in thrombosis and thrombophilia patients where overactivity and abnormality of blood coagulation is observed. The dry powder of this invention provides advantages over conventional anti-coagulants like easy administration, large therapeutic window, low content of preservative and ready to mix dry powder dosage form.