American Society of Hirudotherapy

An Overview of Anticoagulant Drugs Pharmacology, Therapeutic Approaches, Limitations and Perspectives

Review published in Pharmaceutics (2026)

Last Updated: June 18, 2026Reviewed by: ASH Editorial Board
Research article — evidence reviewArticle reference
Evidence: Narrative reviewDrug DevelopmentClinical TrialsMorgovan C et al. · Pharmaceutics, 2026

Abstract

Coagulation is a physiological process necessary to achieve homeostasis. Many pathologies lead to spontaneous activation of the coagulation pathways and increase the risk of venous thrombosis (e.g., atrial fibrillation, orthopaedic surgery, cancer). Therefore, a lot of patients need anticoagulant drugs as preventive or curative treatment. In general, older molecules (unfractionated heparin, low-molecular-weight heparins, vitamin K antagonists) have good efficacy. Still, their adverse reactions, increased risk of bleeding, or difficult administration led to low adherence to treatment and had even limited their use. Recently, new molecules were authorised to improve patient adherence to treatment, mainly formulated for oral administration (e.g., dabigatran, rivaroxaban, apixaban, etc.). This therapeutic approach has a low risk of bleeding and does not require special monitoring by laboratory tests. Also, new anticoagulants for patients with heparin-induced thrombocytopenia (e.g., argatroban, lepirudin, bivalirudin, etc.) were obtained. Moreover, reversal agents for the new anticoagulant molecules used in overdoses or in situations where immediate cessation of the anticoagulant effect is required (e.g., emergency surgery) were studied, some of them being authorised on the pharmaceutical market. This narrative review aims to provide a pharmacological and therapeutic overview of anticoagulant drugs, underlining their implementation and limitations.

Abstract sourced from PubMed (NCBI) for the cited record. See the original publication for the authoritative version.

Publication typeJournal ArticleReview

Summary

Narrative pharmacology review of anticoagulant drug classes including hirudin-derived direct thrombin inhibitors argatroban, lepirudin and bivalirudin for HIT, alongside DOACs and reversal agents.

Why This Matters for Hirudotherapy

This review provides a pharmacological and therapeutic overview of anticoagulant drugs, covering older molecules (unfractionated heparin, low-molecular-weight heparins, vitamin K antagonists) and newer oral anticoagulants (e.g., dabigatran, rivaroxaban, apixaban), as well as alternative anticoagulants for heparin-induced thrombocytopenia including argatroban, lepirudin, and bivalirudin. The article's relevance to ASH's domain is minimal: lepirudin is listed in the abstract only as one of several HIT alternatives, with no mention of leeches, leech saliva, hirudin biology, hirudotherapy, or the leech secretome. CAVEAT: This is a broad pharmacology review with no primary data; lepirudin appears only in passing, and the abstract contains no substantive discussion linking it to leech-derived therapy or ASH's core domain.

Citation

An Overview of Anticoagulant Drugs Pharmacology, Therapeutic Approaches, Limitations and Perspectives.

Morgovan C et al. · Pharmaceutics, 2026

Added to ASH library: May 27, 2026 · Site last updated: June 18, 2026

This website provides educational information and does not constitute medical advice, diagnosis, or treatment recommendations. Medicinal leech therapy carries clinically meaningful risks and should be performed only by qualified clinicians under institutionally approved protocols. FDA 510(k) clearance for medicinal leeches is limited to specific indications; investigational and off-label discussions are labeled accordingly. For patient-specific guidance, consult a qualified healthcare provider.