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Glucosamine sulfate in the treatment of knee osteoarthritis symptoms: A randomized, double‐blind, placebo‐controlled study using acetaminophen as a side comparator

Herrero‐Beaumont, Gabriel, Ivorra, José Andrés Román, del Carmen Trabado, María, Blanco, Francisco Javier, Benito, Pere, Martín‐Mola, Emilio, Paulino, Javier, Marenco, José Luis, Porto, Armando, Laffon, Armando, Araújo, Domingos, Figueroa, Manuel, Branco, Jaime·2007·Arthritis & Rheumatism

Abstract

Objective: To assess the effects of the prescription formulation of glucosamine sulfate (1,500 mg administered once daily) on the symptoms of knee osteoarthritis (OA) during a 6‐month treatment course. Methods: Three hundred eighteen patients were enrolled in this randomized, placebo‐controlled, double‐blind trial in which acetaminophen, the currently preferred medication for symptomatic treatment of OA, was used as a side comparator. Patients were randomly assigned to receive oral glucosamine sulfate 1,500 mg once daily (n = 106), acetaminophen 3 gm/day (n = 108), or placebo (n = 104). The primary efficacy outcome measure was the change in the Lequesne index after 6 months. Secondary parameters included the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) and response according to the Osteoarthritis Research Society International criteria. These outcome measures were assessed using an intent‐to‐treat analysis. Results: At baseline, the study patients had moderately severe OA symptoms (mean Lequesne index ∼11 points). Glucosamine sulfate was more effective than placebo in improving the Lequesne score, with a final decrease of 3.1 points, versus 1.9 with placebo (difference between glucosamine sulfate and placebo −1.2 [95% confidence interval −2.3, −0.8]) (P = 0.032). The 2.7‐point decrease with acetaminophen was not significantly different from that with placebo (difference −0.8 [95% confidence interval −1.9, 0.3]) (P = 0.18). Similar results were observed for the WOMAC. There were more responders to glucosamine sulfate (39.6%) and acetaminophen (33.3%) than to placebo (21.2%) (P = 0.004 and P = 0.047, respectively, versus placebo). Safety was good, and was comparable among groups. Conclusion: The findings of this study indicate that glucosamine sulfate at the oral once‐daily dosage of 1,500 mg is more effective than placebo in treating knee OA symptoms. Although acetaminophen also had a higher responder rate compared with placebo, it failed to show significant effects on the algofunctional indexes.

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Metadata

Authors
Herrero‐Beaumont, G., Ivorra, J. A. R., del Carmen Trabado, M., Blanco, F. J., Benito, P., Martín‐Mola, E., Paulino, J., Marenco, J. L., Porto, A., Laffon, A., Araújo, D., Figueroa, M., & Branco, J.
Venue
Arthritis & Rheumatism
Publisher
Wiley
Published
2007-01-30
Volume
56
Issue
2
Pages
555-567
ISSN
  • 0004-3591 (ISSN-L)
  • 1529-0131
OpenAlex
W2074339153
Cited by
287
References
41
FWCI
17.79
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Glucosamine sulfate in the treatment of knee osteoarthritis symptoms: A randomized, double‐blind, placebo‐controlled study using acetaminophen as a side comparator. https://app.cochat.ai/papers/10.1002/art.22371
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Herrero‐Beaumont, G., Ivorra, J. A. R., del Carmen Trabado, M., Blanco, F. J., Benito, P., Martín‐Mola, E., Paulino, J., Marenco, J. L., Porto, A., Laffon, A., Araújo, D., Figueroa, M., & Branco, J. (2007). Glucosamine sulfate in the treatment of knee osteoarthritis symptoms: A randomized, double‐blind, placebo‐controlled study using acetaminophen as a side comparator. Arthritis & Rheumatism. https://doi.org/10.1002/art.22371

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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