Although current up to date reviews and studies continue to search for new therapeutic alternatives to protamine sulfate, most substitutes possess similar and unacceptable adverse effects 1, 2. Regardless, protamine sulfate continues to see contemporary use given its genuine effectiveness in reversing heparin effects. As a consequence, whenever protamine sulfate use is clinically considered, careful consideration must be given as to whether the use of the agent could decrease the safety of the procedure or worsen the recovery of a patient after the procedure 1, 2, 7. The agent elicits this heparin reversal predominantly via the formation of an inactive complex between the anionic nature of heparin and its own cationic state 1, 2, 7.ĭespite the relative importance of protamine sulfate's medical indication, the medication can notoriously cause a variety of potentially rare but genuinely severe adverse effects that include systemic hypotension, pulmonary hypertension, liver and kidney tissue damage, and anaphylactic reaction, amongst others 1, 7. Subsequently, because most invasive surgical procedures involve the routine use of heparin to prevent potentially surgery-complicating blood clotting, most cases of major bleeding in these frequent procedures are managed with the use of protamine sulfate 1. Since it's earliest discovery in salmon rine sperm heads in the late 1800's to its formal introduction via US FDA approval in 1939, protamine sulfate has occupied an important therapeutic niche as perhaps the only viable option for reversing the anticoagulant effect of heparin use for over 77 years 1, 2. Generic Name Protamine sulfate DrugBank Accession Number DB09141 Background Protamine sulfate is a blood factor used when the reversal of the anticoagulant effect of heparin is necessary and for the treatment of heparin overdose.
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