The most frequently reported adverse reactions include rash, urticaria, anaphylactic shock, and hypotension.
WARNINGS AND PRECAUTIONS:
Anaphylactic reactions including rare fatalities have occurred following intravenously administered Technetium Tc99m Sulfur Colloid. Have resuscitation equipment and personnel immediately available. You are encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/medwatch or call 1-800-FDA-1088.