Journal of Pharmaceutical Sciences and Community
Vol. 23 No. 1 (2026)

Evaluation of the Analgesic Activity of Earthworm Gel  (Lumbricus rubellus) in Male Mice with Formalin-Induced Pain Model

Yovita Mercya (Department of Pharmacology, Pharmacy Program, Faculty of Vocation Studies, Universitas Santo Borromeus, Jl. Parahyangan Raya No.1 Kavling 8, Cipeundeuy, Kota Baru Parahyangan, West Bandung, West Java 40553, Indonesia)
Ayu Amisa Fajrianti (Department of Pharmacology, Pharmacy Program, Faculty of Vocation Studies, Universitas Santo Borromeus, Jl. Parahyangan Raya No.1 Kavling 8, Cipeundeuy, Kota Baru Parahyangan, West Bandung, West Java 40553, Indonesia)



Article Info

Publish Date
24 Jun 2026

Abstract

Inflammatory pain is one of the body’s defense mechanisms, characterized by redness, swelling, and pain due to the release of inflammatory mediators. Nonsteroidal anti-inflammatory drugs (NSAIDs), such as diclofenac sodium, are commonly used topically to relieve pain but may cause local side effects with long-term use. Therefore, a safer, natural-based alternative is needed. Earthworms (Lumbricus rubellus) are known to contain polyphenols and lumbrokinase, which have anti-inflammatory and analgesic properties. This study aimed to evaluate the effectiveness of earthworm gel as a topical analgesic in male mice (Mus musculus) induced with formalin. A total of 24 mice were divided into four groups: untreated, gel base, diclofenac sodium gel, and 5% earthworm gel. Pain response was assessed by measuring the duration of licking behavior at two key phases: acute pain (0–5 minutes) and late inflammatory pain (25–30 minutes). Statistical analysis using the Kruskal-Wallis and Mann–Whitney U tests showed that earthworm gel significantly reduced licking duration in the inflammatory phase, with effectiveness comparable to diclofenac sodium gel. These findings support the potential of earthworm gel as a safe and effective natural alternative for managing inflammatory pain topically.

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Journal Info

Abbrev

jfsk

Publisher

Subject

Description

Jurnal Farmasi Sains dan Komunitas (Journal of Pharmaceutical Sciences and Community) or J. Pharm. Sci. Community firstly published in 2003, is a peer-reviewed, open access journal that publishes research articles, review articles, as well as short communication in various pharmaceutical fields, ...