Which drugs are vitamin K antagonists?

Vitamin K Antagonist

• Warfarin.
• Low Molecular Weight Heparin.
• Rivaroxaban.
• Dabigatran.
• Antithrombotic.
• Direct Oral Anticoagulant.
• Anticoagulation.
• Venous Thromboembolism.

What is the antidote for vitamin K?

Prothrombin complex concentrate, human (Kcentra) It is indicated for urgent reversal of acquired coagulation factor deficiency induced by vitamin K antagonist therapy in adults with acute major bleeding.

Which drugs acts by competitive inhibition of vitamin K reductase?

Although warfarin is the most commonly used VKA worldwide, in some countries, other VKAs are more often prescribed. These drugs exert their anticoagulant effects by impairing the biosynthesis of functional vitamin K–dependent clotting factors through the inhibition of vitamin K epoxide reductase (VKOR) activity.

What is vitamin K deficiency symptoms?

The main symptom of vitamin K deficiency is bleeding (hemorrhage)—into the skin (causing bruises), from the nose, from a wound, in the stomach, or in the intestine. Sometimes bleeding in the stomach causes vomiting with blood. Blood may be seen in the urine or stool, or stools may be tarry black.

Is heparin a vitamin K antagonist?

Reviewer’s conclusions: Low-molecular-weight heparins are possibly as effective and safe as vitamin K antagonists in the prevention of recurrent symptomatic venous thromboembolism after an episode of symptomatic deep venous thrombosis, but have the disadvantage of much higher medicinal costs.

What are the side effects of vitamin K?

Side Effects

• Decreased appetite.
• decreased movement or activity.
• difficulty in breathing.
• enlarged liver.
• general body swelling.
• muscle stiffness.
• paleness.
• yellow eyes or skin.

What are antidote drugs?

Antidotes are agents that negate the effect of a poison or toxin. Antidotes mediate its effect either by preventing the absorption of the toxin, by binding and neutralizing the poison, antagonizing its end-organ effect, or by inhibition of conversion of the toxin to more toxic metabolites.

What is the antidote warfarin?

A dose of vitamin K is used to reverse the action of warfarin (Coumadin), a blood thinner used routinely for more than half a century and, until recently, the only such option for most people.

What does vitamin K reductase do?

Vitamin K epoxide reductase (VKOR) is an integral membrane protein that catalyzes the reduction of vitamin K 2,3-epoxide and vitamin K to vitamin K hydroquinone, a cofactor required for the gamma-glutamyl carboxylation reaction.

Which disease is caused by lack of vitamin K?

What is vitamin K deficiency bleeding? Vitamin K deficiency bleeding (VKDB) is a bleeding problem that occurs in some newborns during the first few days of life. VKDB was previously called hemorrhagic disease of the newborn.

What causes low vitamin K?

Vitamin K deficiency results from extremely inadequate intake, fat malabsorption, or use of coumarin anticoagulants. Deficiency is particularly common among breastfed infants. It impairs clotting. Diagnosis is suspected based on routine coagulation study findings and confirmed by response to vitamin K.

What is difference between heparin and warfarin?

Heparin. Heparin works faster than warfarin, so it is usually given in situations where an immediate effect is desired. For example, this medication is often given in hospitals to prevent growth of a previously detected blood clot.