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  • Title: [A multi-central, randomized, controlled clinical trial of glucosamine hydrochloride/sulfate in the treatment of knee osteoarthritis].
    Author: Qiu GX, Weng XS, Zhang K, Zhou YX, Lou SQ, Wang YP, Li W, Zhang H, Liu Y.
    Journal: Zhonghua Yi Xue Za Zhi; 2005 Nov 16; 85(43):3067-70. PubMed ID: 16324409.
    Abstract:
    OBJECTIVE: To evaluate the efficacy and safety of glucosamine hydrochloride (GH) in the treatment of patients with knee osteoarthritis (OA) comparing with glucosamine sulfate (GS). METHODS: A multi-central, randomized, parallel-controlled clinical trial of GH vs GS was performed. 142 patients suffering from knee OA were randomized into 2 groups, treated with GH and GS for 480 mg and 500 mg one time respectively. Patients received medicine 3 times daily with total 1440 mg per day for GH group and 1500 mg for GS group, orally for 4 weeks and were assessed for drug efficacy and safety for 2 more weeks. Knee pain at rest, at movement and at pressure, knee swelling, morning stiffness and walking ability were recorded at 1, 2, 3, 4 and 6 week according to Lequesne's criteria. Other features such as therapeutic efficacy, adverse events and laboratory parameters were also recorded. RESULTS: A considerable improvement in OA symptoms and a reduce of total Lequesne's score were observed in both groups after the 4-week treatment. The Lequesne's score decreased to 3.4 +/- 1.9 (P < 0.05) and 3.4 +/- 1.8 (P < 0.05) after 4-week treatment comparing to 0-week in the GH (9.4 +/- 1.8) group and GS (9.5 +/- 1.4) group respectively. There was no significant difference between 2 groups in decreasing the Lequesne's score (P > 0.05). The symptomatic improvement rates in patients were 91.4% and 90.0% at 4-week treatment in the GH and GS group respectively (P > 0.05). There was a remnant therapeutic effect in both groups at 2 weeks after discontinuation of the treatment. And 4.2% (3/71) of patients on GH reported adverse events, vs 7.0% (5/71) adverse events with GS group (P > 0.05), mainly mild stomach discomfort and constipation. CONCLUSION: There were no significant differences in efficacy and safety between GH and GS groups in the treatment of knee OA. Glucosamine hydrochloride is as effective and safe as glucosamine sulfate.
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