Warfarin 1 mg Tablets – 28

Warfarin 1 mg is a low-dose oral anticoagulant used to prevent and manage blood clot formation. It contains Warfarin, a vitamin K antagonist that reduces the blood’s clotting ability. This strength is often used for dose adjustment and fine-tuning anticoagulation therapy based on individual patient response and INR levels.

Active Ingredient and Composition

• Active Ingredient: Warfarin

• Strength: 1 mg per tablet

• Dosage Form: Oral tablets

• Pack Size: 28 tablets

Drug Class

• Pharmacological Class: Vitamin K antagonist

• Therapeutic Category: Anticoagulants (blood thinners)

Uses and Medical Indications of Warfarin

Warfarin 1 mg is indicated for:

• Treatment and prevention of blood clots (deep vein thrombosis and pulmonary embolism)

• Stroke prevention in atrial fibrillation

• Patients with mechanical heart valves

• Prevention of recurrent myocardial infarction

• Prevention of ischemic stroke

This dose is commonly used for maintenance therapy and dose titration.

How Warfarin Works

Warfarin works by inhibiting vitamin K–dependent clotting factors (II, VII, IX, and X) in the liver. This reduces the formation of fibrin clots and prevents clot growth or new clot formation.

Dosage and Administration of Warfarin

• Dose is individualized based on INR monitoring

• Usually taken once daily at the same time

• Requires regular INR (International Normalized Ratio) testing

Important Instructions:

• Do not take double doses

• Follow the prescribed regimen strictly

• Maintain consistent intake of vitamin K-containing foods

Possible Side Effects of Warfarin

Common side effects include:

• Nosebleeds

• Vaginal bleeding

• Headache and dizziness

• Stomach pain

Serious warning signs:

• Black or bloody stools

• Blood in urine

• Unusual bruising

• Vision disturbances

Contraindications

Do not use Warfarin if you have:

• Hypersensitivity to warfarin

• Recent or planned major surgery (brain, spine, or eye)

• Severe uncontrolled hypertension

• Active bleeding disorders

• Pregnancy (high risk of fetal harm)

Drug Interactions

Warfarin interacts with many medications, including:

• NSAIDs (e.g., ibuprofen, naproxen)

• Aspirin and antiplatelet drugs

• Antibiotics and antifungals

• Herbal products (e.g., St. John’s Wort)

These interactions may increase bleeding risk or reduce effectiveness.

Warnings and Precautions

• Requires frequent INR monitoring

• Avoid injuries due to increased bleeding risk

• Inform healthcare providers before any procedure

• Use effective contraception during treatment and for at least one month after stopping

Use During Pregnancy and Breastfeeding

• Contraindicated during pregnancy

• May be used cautiously during breastfeeding under medical supervision

Use for Children

• Only under specialist supervision

Drug Alternatives

Alternative anticoagulants include:

• Direct oral anticoagulants (DOACs) such as apixaban and rivaroxaban

• Heparin and low molecular weight heparins

Comparison With Similar Drugs

Compared with DOACs:

• Warfarin requires regular INR monitoring

• Has significant dietary and drug interactions

• Preferred in certain clinical scenarios (e.g., mechanical valves)

Safe Usage Tips

• Take the medication at the same time every day

• Monitor INR regularly

• Avoid sudden dietary changes (especially vitamin K-rich foods)

• Use caution to prevent cuts or injuries

Frequently Asked Questions (FAQ)

Does Warfarin dissolve blood clots?
No, it prevents clot growth and formation. The body gradually breaks down existing clots.

When does Warfarin start working?
It begins within 24–72 hours, with full therapeutic effect in 3–5 days.

What is the best time to take Warfarin?
At a fixed time daily to maintain stable blood levels.

When should I seek medical help?
If you experience unusual bleeding, black stools, or severe symptoms.

Conclusion

Warfarin 1 mg is an essential anticoagulant used for precise dose adjustment and long-term clot prevention. When monitored properly, Warfarin helps reduce the risk of serious thromboembolic complications while ensuring safe anticoagulation therapy.