Fondaparinux (also known by its brand name, Arixtra) is an anticoagulant (or blood thinner) that's used to prevent and treat blood clots in adults. It stops proteins in your body that typically help clot blood from working. Fondaparinux (Arixtra) is given as an injection under the skin once per day. The dosage typically depends on why you need fondaparinux (Arixtra) and your body weight. The most common side effect is bleeding.
Fondaparinux (Arixtra) is an anticoagulant (or blood thinner). It blocks a protein called factor Xa that normally helps make clots and stop any bleeding. By blocking factor Xa, fondaparinux (Arixtra) helps prevent blood clots from forming in your body.
The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.
Contact your healthcare provider immediately if you experience any of the following.
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
More common
Pale skin
troubled breathing with exertion
unusual bleeding or bruising
unusual tiredness or weakness
Less common
Black, tarry stools
bladder pain
bleeding gums
blood in the urine or stools
blurred vision
chills
collection of blood under the skin
confusion
convulsions
decreased or cloudy urine
deep, dark purple bruise
difficult, burning, or painful urination
dizziness
fainting or lightheadedness when getting up from a lying or sitting position
frequent urge to urinate
increased thirst
irregular heartbeat
itching, pain, redness, or swelling at the injection site
loss of appetite
lower back or side pain
muscle pain or cramps
nausea or vomiting
numbness or tingling in the hands, feet, or lips
pinpoint red spots on the skin
red, tender, or oozing skin at incision
shortness of breath
sores, ulcers, or white spots on the lips or in the mouth
sudden sweating
Incidence not known
Back pain
bowel or bladder dysfunction
difficulty with swallowing
fast heartbeat
large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
leg weakness
numbness
paralysis
puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
tightness in the chest
Get emergency help immediately if any of the following symptoms of overdose occur:
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
More common
Difficulty having a bowel movement
swelling
trouble sleeping
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
Tips for using fondaparinux (Arixtra) at home:
Yes, you can safely use fondaparinux (Arixtra) if you can't have pork or are allergic to pork products. Unlike another blood thinner called heparin, fondaparinux (Arixtra) isn't made from pork products.
No. Fondaparinux (Arixtra) is a lab-made version of a part of heparin, so it has a very similar structure to heparin and has similar properties as heparin. But fondaparinux (Arixtra) and heparin are two different medications. Both are injectable blood thinners that are given under the skin in the stomach, but heparin can also be given as an injection into the veins (IV) for certain situations. Also, fondaparinux (Arixtra) is given once per day, whereas heparin is given multiple times per day or as a continuous IV infusion. Because fondaparinux (Arixtra) isn't a type of heparin, it's a reasonable choice for people who are allergic to or can't use heparin products.
Ask your provider if and when you should stop taking fondaparinux (Arixtra) before a surgery or procedure. This is because it'll probably depend on the type of surgery and your risk for bleeding and clotting. For example, it's generally recommended to stop using fondaparinux (Arixtra) about 36 to 42 hours before brain or spinal cord surgery. Since it takes about 5 days for most of fondaparinux (Arixtra) to leave your body (based on the medication's half-life), your provider might ask you to stop taking fondaparinux (Arixtra) for a few days before your surgery.
No, there isn't a specific antidote or reversal agent for fondaparinux (Arixtra). Current recommendations for treating a bleed caused by fondaparinux (Arixtra) is to use a medication called FEIBA, which replaces the clotting factors that are blocked by the medication to stop bleeding. It's important to contact your provider or seek medical help if you fall and hit your head or if you have signs of unusual bleeding, such as a bruise that gets larger over time, a cut that doesn't heal, or bleeding gums from brushing your teeth that doesn't stop.
Both fondaparinux (Arixtra) and enoxaparin (Lovenox) are injectable blood thinners, but they're two completely different medications. Fondaparinux (Arixtra) is a lab-made version of a part of heparin, whereas enoxaparin (Lovenox) is a type of low-molecular-weight heparin (LMWH). While the two medications are both related to heparin, they work a little differently to prevent and treat blood clots. One big difference is that enoxaparin (Lovenox) can't be used by someone who's allergic to heparin, whereas fondaparinux (Arixtra) can. Additionally, fondaparinux (Arixtra) is typically injected under the skin once per day, whereas enoxaparin (Lovenox) is injected under the skin twice per day most times (sometimes once per day in certain cases).
Fondaparinux (Arixtra) is administered as an injection under the skin in the lower stomach, at least 2 inches below your belly button. Once you remove the needle shield, gently pinch the cleaned skin in your stomach area with your thumb and index finger to form a skin fold. Insert the needle straight into the skin fold at a 90-degree angle. Press the plunger of the syringe down to deliver the dose. Then, keep your finger on the plunger as you remove the syringe from the injection site. Throw the used syringe away in a sharps container. Alternate injection sites each time you use fondaparinux (Arixtra) to avoid pain or damage to your skin. Never inject the medication through clothes or into skin that's damaged, bruised, or scarred.
Fondaparinux (Arixtra) can cause some serious health issues. This risk may be even higher for certain groups. If this worries you, talk to your doctor or pharmacist about other options.
You're at a greater risk of bleeding around your spinal cord if you're taking fondaparinux (Arixtra) and need to have a lumbar puncture (spinal tap) or get an epidural. Sometimes, this spinal bleeding can cause nerve damage and possibly make you paralyzed.
To lower this risk, your provider will tell you when to stop taking fondaparinux (Arixtra) before your planned back surgery or procedure. If it's not possible, make sure to be aware of the signs and symptoms of spinal problems. Call your provider right away if you notice pain along your spine; tingling, a burning sensation, numbness, or weakness in your legs; or that you can't urinate or have bowel movements as usual.
Taking fondaparinux (Arixtra) can raise your risk for bleeds. Your risk can be even higher if you're also taking other medications that can cause bleeding, if you have certain medical conditions (e.g., kidney or bleeding problems), or if you weigh less than 110 lbs.
If you have a serious bleed from using fondaparinux (Arixtra), your provider will need to give you treatment to stop the bleed. Let your provider know if you have a fall, head injury, or other kinds of physical injury. Your provider might need to check you for bleeding inside your body. Get medical help right away if you have a severe headache, dark or tarry stool, bleeds that are difficult to stop, or any unusual bleeding or bruising.
Fondaparinux (Arixtra) can cause your platelet count to drop. Your provider will check your platelet count with routine blood tests. Your provider might stop the medication if your levels fall below a certain amount. Since platelets help with clotting, having a low platelet count can put you at risk for bleeding and easy bruising.
Look out for signs of bleeding, such as bleeding that doesn't stop; bleeding gums; vomit that's bloody or that looks like coffee grounds; or black, tarry stools. Get medical help right away if you experience any of these symptoms.
| Dosage | Quantity | Price as low as | Price per unit |
|---|---|---|---|
| 2 syringes of 5mg/0.4ml | 1 carton | $539.93 | $539.93 |
| 2 syringes of 10mg/0.8ml | 1 carton | $38.99 | $38.99 |
| 2 syringes of 7.5mg/0.6ml | 1 carton | $29.64 | $29.64 |
| 2 syringes of 2.5mg/0.5ml | 1 carton | $30.05 | $30.05 |
| 10 syringes of 5mg/0.4ml | 1 carton | $127.58 | $127.58 |
| 10 syringes of 10mg/0.8ml | 3 cartons | $361.60 | $120.53 |
| 10 syringes of 7.5mg/0.6ml | 3 cartons | $323.34 | $107.78 |
| 10 syringes of 2.5mg/0.5ml | 3 cartons | $141.89 | $47.30 |
Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.
Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
Contraindications are specific health conditions or situations in which a person should not take a medication due to safety concerns. If you have any of the following conditions or if any of the following apply to you, let your healthcare provider know because Fondaparinux (Arixtra) will not be safe for you to take.