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Kcentra Side Effects

Generic Name: prothrombin complex

Note: This page contains information about the side effects of prothrombin complex. Some of the dosage forms included on this document may not apply to the brand name Kcentra.

For the Consumer

Applies to prothrombin complex: intravenous powder for solution

In addition to its needed effects, some unwanted effects may be caused by prothrombin complex (the active ingredient contained in Kcentra). In the event that any of these side effects do occur, they may require medical attention.

If any of the following side effects occur while taking prothrombin complex, check with your doctor or nurse immediately:

Less common:
  • Blurred vision
  • chest pain
  • confusion
  • convulsions
  • decrease in the amount of urine
  • dizziness
  • dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
  • dry mouth
  • fast, pounding, or irregular heartbeat or pulse
  • headache, sudden, severe
  • increased thirst
  • irregular heartbeat
  • loss of appetite
  • muscle pain or cramps
  • nausea or vomiting
  • nervousness
  • noisy, rattling breathing
  • numbness or tingling in the hands, feet, or lips
  • pounding in the ears
  • slow or fast heartbeat
  • sweating
  • swelling of the fingers, hands, feet, or lower legs
  • tightness in the chest
  • troubled breathing
  • troubled breathing at rest
  • unusual tiredness or weakness
  • weakness
  • weight gain
Incidence not known:
  • Anxiety
  • blood in the stools or urine
  • blue lips and fingernails
  • bruising
  • chest discomfort
  • coughing or vomiting blood
  • coughing that sometimes produces a pink frothy sputum
  • difficult or labored breathing
  • difficult, fast, noisy breathing, sometimes with wheezing
  • difficulty with speaking
  • double vision
  • fainting
  • feeling of warmth
  • headache
  • hives or welts
  • inability to move the arms, legs, or facial muscles
  • increased sweating
  • itching
  • large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
  • noisy breathing
  • pain or discomfort in the arms, jaw, back, or neck
  • pain, redness, or swelling in the arm or leg
  • pale skin
  • persistent bleeding or oozing from puncture sites, mouth, or nose
  • rash
  • redness of the face, neck, arms, and occasionally, upper chest
  • redness of the skin
  • slow speech
  • sudden shortness of breath or troubled breathing
  • tenderness, pain, swelling, warmth, skin discoloration, and prominent superficial veins over the affected area

Minor Side Effects

Some of the side effects that can occur with prothrombin complex may not need medical attention. As your body adjusts to the medicine during treatment these side effects may go away. Your health care professional may also be able to tell you about ways to reduce or prevent some of these side effects. If any of the following side effects continue, are bothersome or if you have any questions about them, check with your health care professional:

More common:
  • Difficulty with moving
  • muscle pain or stiffness
  • pain in the joints
Less common:
  • Diarrhea
  • difficulty having a bowel movement (stool)
  • tearing of skin
  • trouble sleeping
Incidence not known:
  • Bleeding, blistering, burning, coldness, discoloration of the skin, feeling of pressure, hives, infection, inflammation, itching, lumps, numbness, pain, rash, redness, scarring, soreness, stinging, swelling, tenderness, tingling, ulceration, or warmth at the injection site

For Healthcare Professionals

Applies to prothrombin complex: intravenous powder for injection


The most common adverse reactions were headache, nausea/vomiting, arthralgia, and hypotension.

The most serious adverse reactions were thromboembolic events including stroke, pulmonary embolism, and deep vein thrombosis.[Ref]


Common (1% to 10%): Hypotension (4.9%), tachycardia (2.9%), increased blood pressure/hypertension (2.9%)
Uncommon (0.1% to 1%): Venous thrombosis, calf (1.0%), deep vein thrombosis (1.0%), fistula clot (1.0%)
Postmarketing reports: Arterial thromboembolic events (including acute myocardial infarction and arterial thrombosis), venous thromboembolic events (including pulmonary embolism and venous thrombosis), and disseminated intravascular coagulation[Ref]


Common (1% to 10%): Nausea/vomiting (3.9%), constipation (1.9%)[Ref]


Postmarketing reports: Flushing, urticaria, tachycardia, anxiety, angioedema, wheezing, nausea, vomiting, hypotension, tachypnea, dyspnea, pulmonary edema, and bronchospasm[Ref]


Common (1% to 10%): International normalized ratio increased (2.9%), hypokalemia (1.9%)
Uncommon (0.1% to 1%): Fluid overload (1.0%)[Ref]


Common (1% to 10%): Arthralgia (3.9%)
Uncommon (0.1% to 1%): Chest pain (1.0%)[Ref]

Nervous system

Common (1% to 10%): Headache (7.8%), hemorrhage intracranial (2.9%), ischemic cerebrovascular accident (1.9%)[Ref]


Common (1% to 10%): Skin laceration/contusion/subcutaneous hematoma (2.9%)
Uncommon (0.1% to 1%): Sudden death, unknown cause (1.0%)[Ref]


Common (1% to 10%): Mental status changes (1.9%)
Uncommon (0.1% to 1%): Insomnia (1.0%)[Ref]


Common (1% to 10%): Respiratory distress/dyspnea/hypoxia (1.9%)
Uncommon (0.1% to 1%): Abnormal breath sounds/rales (1.0%)[Ref]


1. "Product Information. Kcentra (prothrombin complex)." CSL Behring, King of Prussia, PA.

Not all side effects for Kcentra may be reported. You should always consult a doctor or healthcare professional for medical advice. Side effects can be reported to the FDA here.

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.