Combining Fondaparinux Sodium and Naproxen is a major interaction and should generally be avoided without close medical supervision.
Combining naproxen with fondaparinux significantly increases your risk of bleeding, including serious and life-threatening bleeding episodes. This combination should generally be avoided.
Mechanism: Naproxen, a non-steroidal anti-inflammatory drug (NSAID), inhibits prostaglandin synthesis, which can impair gastric mucosal defense and inhibit platelet aggregation. Fondaparinux is a synthetic selective inhibitor of activated factor Xa (anti-Xa), which prevents thrombin generation and clot formation. The concurrent use of these agents results in additive antiplatelet and anticoagulant effects, alongside increased gastrointestinal mucosal damage from the NSAID.
Fondaparinux Sodium vs. Naproxen
Compare Fondaparinux Sodium and Naproxen: mechanism of action, indications, side effects, cost, and which may be right for you.
Drug A
Fondaparinux Sodium
fondaparinux sodium
Anticoagulants
RxDrug B
Naproxen
Naproxen
NSAIDs (Non-Steroidal Anti-Inflammatory Drugs)
RxQuick Comparison
| Category | Fondaparinux Sodium | Naproxen |
|---|---|---|
| Drug Class | Anticoagulants | NSAIDs (Non-Steroidal Anti-Inflammatory Drugs) |
| Rx Status | Rx | Rx |
| Generic Available | No | No |
| Typical Cost | $500–$1,500/month | $4–$25/month |
Fondaparinux Sodium Overview
Fondaparinux sodium is a medication that helps prevent and treat blood clots. It works by thinning the blood, specifically by blocking a substance in the body called Factor Xa, which is involved in clot formation. This medicine is used to prevent deep vein thrombosis (DVT) after major surgeries like hip, knee, or abdominal surgery, and also to treat existing DVT or pulmonary embolism (PE).
Full Fondaparinux Sodium guide →Naproxen Overview
NAPROXEN (brand name: Naproxen) is a NSAIDs. 1 INDICATIONS & USAGE Naproxen delayed-release tablets are indicated for: the relief of the signs and symptoms of: rheumatoid arthritis osteoarthritis ankylosing spondylitis Polyarticular Juvenile Idiopathic Arthritis Naproxen delayed-release tablets are non-steroidal anti-inflammatory drugs…
Full Naproxen guide →How Each Drug Works
Fondaparinux Sodium
The antithrombotic activity of fondaparinux sodium is the result of antithrombin III (ATIII)-mediated selective inhibition of Factor Xa. By selectively binding to ATIII, fondaparinux sodium potentiates (about 300 times) the innate neutralization of Factor Xa by ATIII. Neutralization of Factor Xa interrupts the blood coagulation cascade and thus inhibits thrombin formation and thrombus development. Fondaparinux sodium does not inactivate thrombin (activated Factor II) and…
Naproxen
Naproxen has analgesic, anti-inflammatory, and antipyretic properties. The mechanism of action of naproxen, like that of other NSAIDs, is not completely understood but involves inhibition of cyclooxygenase (COX-1 and COX-2). Naproxen is a potent inhibitor of prostaglandin synthesis in vitro. Naproxen concentrations reached during therapy have produced in vivo effects. Prostaglandins sensitize afferent nerves and potentiate the action of bradykinin in inducing pain in ani…
Approved Uses (Indications)
Fondaparinux Sodium
Fondaparinux sodium injection is a Factor Xa inhibitor (anticoagulant) indicated for: Prophylaxis of deep vein thrombosis (DVT) in patients undergoing hip fracture surgery (including extended prophylaxis), hip replacement surgery, knee replacement surgery, or abdominal surgery. Treatment of DVT or acute pulmonary embolism (PE) when administered in conjunction with warfarin. 1.1 Prophylaxis of Deep Vein Thrombosis Fondaparinux sodium injection is indicated for the prophylaxis of deep vein thrombosis (DVT), which may lead to pulmonary embolism (PE): …
Naproxen
Naproxen delayed-release tablets are indicated for: the relief of the signs and symptoms of: rheumatoid arthritis osteoarthritis ankylosing spondylitis Polyarticular Juvenile Idiopathic Arthritis Naproxen delayed-release tablets are non-steroidal anti-inflammatory drugs indicated for: the relief of the signs and symptoms of: rheumatoid arthritis osteoarthritis ankylosing spondylitis polyarticular juvenile idiopathic arthritis
Side Effects
Fondaparinux Sodium
Naproxen
Cost Comparison
Fondaparinux Sodium
$500–$1,500/month
As Fondaparinux Sodium is a brand-only drug, manufacturer patient assistance programs or discount cards may offer significant savings. Always check with your healthcare provider for available options.
Naproxen
$4–$25/month
Naproxen is widely available as an affordable generic. Using discount cards like GoodRx can further reduce the cost, often bringing it to under $10 per month.
Compare prices for Fondaparinux Sodium and Naproxen
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Medical Disclaimer
The information on RxGuide is intended for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician, pharmacist, or other qualified health provider with any questions you may have regarding a medical condition or medication. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.