Kaur, JasmineRani, SeemaGulia, AnilBhutani, GarimaKumar, SanjeevNarwat, Arvind2023-06-172023-06-172021-06Kaur Jasmine,Rani Seema,Gulia Anil,Bhutani Garima,Kumar Sanjeev,Narwat Arvind. Role of Vitamin B Complex as an Add-on Therapy to Diclofenac in Patients with Primary Osteoarthritis of the Knee. Journal of Pharmacology and Pharmacotherapeutics. 2021 Jun; 12(2): 68–720976-500X0976-5018http://imsear.searo.who.int/handle/123456789/216010Objective: This study was conducted with the aim to evaluate the efficacy and safety of Vitamin B complex as an add-on therapy to diclofenac in patients with primary osteoarthritis (OA) of the knee. Materials and Methods: In this prospective, open-labeled, randomized, and comparative clinical study, a total of 130 patients of age >40 years with primary OA of knee attending orthopedics OPD were randomly allocated into two groups of 65 each, i.e., Group D and Group B. In Group D, patients received tablet diclofenac 75 mg and in Group B, patients received tablet Vitamin B complex along with diclofenac once daily for 4 weeks, respectively. Clinical assessment was done at baseline and at the end of 4 weeks and 8 weeks by the visual analog scale (VAS), WOMAC index, and Lequesne index. Results: During the intergroup comparison, it was found that Vitamin B complex as an add-on therapy to diclofenac produced statistically significant reduction in mean VAS pain score (P < 0.05). However, the difference in mean WOMAC index and Lequesne index was not statistically different at 4 and 8 weeks between the two groups (P > 0.05). Mild side effects were seen at 4 weeks, but no side effects persisted up to 8 weeks in both the groups. Conclusion: The present study suggested that Vitamin B complex as an add-on therapy was found to cause a significant reduction in pain score. It could be a promising drug in patients with OA to improve the analgesic effect, when combined can reduce the dose of diclofenac, thereby minimizing the side effects.Knee osteoarthritisLequesne indexvisual analog scaleVitamin B complexWOMAC indexJournal ArticleIndiaDepartments of Pharmacology and Orthopedics, BPS Government Medical College for Women, Khanpur, Kalan, Sonipat, Haryana, India