Randomized controlled trial2026Open access

Comparison of oral ketorolac and oral magnesium for postoperative pain management in anorectal surgery: A randomized double-blind clinical trial

Eshagh Hoseini SJ, Ghazi FS, Eshraghi M, Vahedian M, Pashaei MR, Bahadorzadeh M, Ahmadpour S

The Journal of international medical research · 0 citations

How it was studied

Design
Randomized controlled trial (indexed by PubMed)
Studied in
People
Main outcome
Health markers and function

Who paid for it

Funding
Independent funding

Based on full-text disclosure statement.

Publication

Published
2026-01-01 · J Int Med Res · vol. 54 · issue 1 · p. 3000605251409937
Publisher
SAGE Publishing
Cited
0 citations · more than 4% of similar papers · 0.0× the field average
References
32 works
Access
Open access (journal) · CC-BY-NC
Research areas
Inflammatory mediators and NSAID effects · Anesthesia and Pain Management · Anorectal Disease Treatments and Outcomes
Keywords
Ketorolac, Analgesic, Randomized controlled trial, Adverse effect, Clinical trial, Narcotic, Postoperative pain
MeSH
rectum, humans, magnesium, ketorolac, anti-inflammatory agents, non-steroidal, pain measurement, administration, oral, double-blind method, adult, aged, middle aged, anal canal, female, male, pain management, postoperative pain

7 authors

From IR

  • Seyed Jalal Eshagh HoseiniShahid Beheshti University of Medical Sciences
  • Farzaneh Sadat GhaziQom University of Medical Science and Health Services
  • Mohsen EshraghiShahid Beheshti University of Medical Sciences
  • Mostafa VahedianQom University of Medical Science and Health Services
  • Mohammad Reza PashaeiUrmia University; Urmia University of Medical Sciences
  • Mojdeh Bahadorzadeh · correspondingShahid Beheshti University of Medical Sciences

Abstract

ObjectivePostoperative pain is one of the most common complications after anorectal surgery and can delay recovery, lengthen hospital stay, and reduce patient comfort. Non-steroidal anti-inflammatory drugs are widely used due to their strong analgesic and opioid-sparing effects but are associated with gastrointestinal, renal, and bleeding risks. Magnesium may provide analgesic benefits with fewer adverse effects. However, evidence regarding its efficacy in the oral form and direct comparison with non-steroidal anti-inflammatory drugs remains limited. In this study, we aimed to compare the analgesic effectiveness of oral magnesium with that of oral ketorolac to identify the more suitable analgesic drug in these patients.MethodsIn this double-blind, randomized controlled trial, 104 patients undergoing anorectal surgery were randomly divided into 2 groups. Group 1 received oral magnesium (250 mg daily), and Group 2 received oral ketorolac (10 mg daily). The medicine was given to the patients 2 h after the operation and then every 12 h for 10 days. Pain levels were measured at 24-hour intervals after the surgery using the visual analog scale.ResultsBoth treatments significantly reduced postoperative pain over time (p p p = 0.089 and 0.092, respectively). Narcotic consumption was higher in the magnesium group than in the ketorolac group (p < 0.001).ConclusionsOral magnesium demonstrated a clinically meaningful analgesic effect comparable to that of oral ketorolac from postoperative day 5 onward, suggesting that it is a safe non-opioid alternative for postoperative pain management in anorectal surgery. Further multicenter trials with larger samples are warranted to confirm these findings.

Abstract via Europe PMC. Copyright remains with the authors or publisher (CC BY-NC).

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