Lexiscan

DRUG DESCRIPTION

Regadenoson is an A2A adenosine receptor agonist that is a coronary vasodilator [see CLINICAL PHARMACOLOGY]. Regadenoson is chemically described as adenosine, 2-[4-[(methylamino)carbonyl]-1H-pyrazol-1-yl]-, monohydrate. Its structural formula is:

Lexiscan® (regadenoson) Structural Formula Illustration

The molecular formula for regadenoson is C15H18N8O5•H2O and its molecular weight is 408.37. Lexiscan is a sterile, nonpyrogenic solution for intravenous injection. The solution is clear and colorless. Each 1 mL in the 5-mL vial or pre-filled syringe contains 0.084 mg of regadenoson monohydrate, corresponding to 0.08 mg regadenoson on an anhydrous basis, 10.9 mg dibasic sodium phosphate dihydrate or 8.7 mg dibasic sodium phosphate anhydrous, 5.4 mg monobasic sodium phosphate monohydrate, 150 mg propylene glycol, 1 mg edetate disodium dihydrate, and Water for Injection, with pH between 6.3 and 7.7.

What are the possible side effects of regadenoson (Lexiscan)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Tell your caregivers at once if you have a serious side effect such as:

  • chest pain or heavy feeling, pain spreading to the arm or shoulder, nausea, sweating, general ill feeling;
  • slow heart rate, weak pulse, fainting, slow breathing (breathing may stop);
  • wheezing, trouble breathing; or
  • feeling like you might pass...

Read All Potential Side Effects and See Pictures of Lexiscan »


Lexiscan Patient Information Including Side Effects

Brand Names: Lexiscan

Generic Name: regadenoson (Pronunciation: re ga DEN oh son)

  • What is regadenoson (Lexiscan)?
  • What are the possible side effects of regadenoson (Lexiscan)?
  • What is the most important information I should know about regadenoson (Lexiscan)?
  • What should I discuss with my health care provider before receiving regadenoson (Lexiscan)?
  • How is regadenoson given (Lexiscan)?
  • What happens if I miss a dose (Lexiscan)?
  • What happens if I overdose (Lexiscan)?
  • What should I avoid while receiving regadenoson (Lexiscan)?
  • What other drugs will affect regadenoson (Lexiscan)?
  • Where can I get more information?

What is regadenoson (Lexiscan)?

Regadenoson is a stress agent that works by increasing blood flow in the arteries of the heart.

Regadenoson is given in preparation for a radiologic (x-ray) examination of blood flow through the heart to test for coronary artery disease.

Regadenoson may also be used for other purposes not listed in this medication guide.

What are the possible side effects of regadenoson (Lexiscan)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Tell your caregivers at once if you have a serious side effect such as:

  • chest pain or heavy feeling, pain spreading to the arm or shoulder, nausea, sweating, general ill feeling;
  • slow heart rate, weak pulse, fainting, slow breathing (breathing may stop);
  • wheezing, trouble breathing; or
  • feeling like you might pass out.

Less serious side effects may include:

  • headache;
  • dizziness;
  • nausea, stomach discomfort, decreased sense of taste;
  • mild chest discomfort; or
  • warmth, redness, or tingly feeling under your skin.

This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about regadenoson (Lexiscan)?

You should not use this medication if you are allergic to regadenoson, or if you have a serious heart condition such as AV block or "sick sinus syndrome" (unless you have a pacemaker).

Before you receive regadenoson, tell your doctor if you have asthma or COPD, a history of heart disease, or if you have had an illness causing vomiting or diarrhea.

Avoid drinking coffee or other beverages with caffeine for at least 12 hours before your stress test.

Tell your caregivers if you have a serious side effect such as chest pain or heavy feeling, pain spreading to the arm or shoulder, sweating, general ill feeling, wheezing or trouble breathing, slow heart rate, weak pulse, slow breathing, or fainting.

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