Bioequivalence Study of Two Formulations of Tramadol Capsules in Healthy Myanmar Volunteers

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Linn Ye Htut; Soe Myat Myat; Thu K.Khine; Tun Thida; Kaw San Mi Kun; Pyae Nyein Chan; Aye Nu Nu

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Journal Paper

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Journal: Pharmaceutical and Biomedical Research Year:2019 | Volume:5 | Issue:4 Page(s): 35-44

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Information Journal Paper

Title

Bioequivalence Study of Two Formulations of Tramadol Capsules in Healthy Myanmar Volunteers

Author(s)

Keywords

Bioequivalence

Bioavailability

Tramadol

Pharmacokinetics

Highperformance Liquid Chromatography (HPLC)

Abstract

Background: Tramadol is one of the most commonly used analgesics, thanks to its efficacy and safety. It is widely used in Myanmar for postoperative and cancer pain control. The use of generic drugs has been steadily increasing worldwide, mostly in developing countries. Generic drugs should have efficacy and safety comparable to their innovators or other approved generic products. Objectives: This study aims to compare the Bioequivalence of locally producing, Tramadol BPI® capsule (test product) with the Tramazac® capsule (reference product) in healthy Myanmar volunteers. Methods: The Bioequivalence was determined in 16 healthy Myanmar volunteers after a single oral administration of 100 mg Tramadol (under fasting condition) in a randomized, openlabel, two-period, and two-treatment crossover study with a two-week washout period. Blood samples were collected at specified times, and plasma Tramadol concentrations were measured with a validated high-performance liquid chromatography method with a fluorescence detector. Pharmacokinetic parameters were determined using the plasma concentration-time data in a noncompartmental model. Results: The analysis of variance of the logarithmically transformed parameters (maximum plasma concentration (Cmax), Area Under the concentration-time Curve from the time of administration to the last measured concentration (AUC0-t), and to infinity (AUC0-∞ ) revealed no sequence, period, and formulation effects between the test and reference products. Significant differences were found between the subjects within the sequence for both AUC0-t, and AUC0-∞ , indicating a substantial intersubject variation. The geometric mean ratio of test/reference and their 90% confidence intervals were within the ASEAN (Association of Southeast Asian Nations) Bioequivalence acceptance interval of 80% to 125%. Conclusion: Tramadol BPI® and Tramazac® capsules, after a single oral administration of 100 mg, were bioequivalent in respect of their rate and extent of absorption under fasting condition.

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References

Utilization, availability of analgesics and quality of pain control for post-operative pain in surgical patients

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APA: Copy

Linn, Ye Htut, Soe, Myat Myat, Thu, K.Khine, Tun, Thida, Kaw San, Mi Kun, Pyae, Nyein Chan, & Aye, Nu Nu. (2019). Bioequivalence Study of Two Formulations of Tramadol Capsules in Healthy Myanmar Volunteers. PHARMACEUTICAL AND BIOMEDICAL RESEARCH, 5(4), 35-44. SID. https://sid.ir/paper/756516/en

Vancouver: Copy

Linn Ye Htut, Soe Myat Myat, Thu K.Khine, Tun Thida, Kaw San Mi Kun, Pyae Nyein Chan, Aye Nu Nu. Bioequivalence Study of Two Formulations of Tramadol Capsules in Healthy Myanmar Volunteers. PHARMACEUTICAL AND BIOMEDICAL RESEARCH[Internet]. 2019;5(4):35-44. Available from: https://sid.ir/paper/756516/en

IEEE: Copy

Ye Htut Linn, Myat Myat Soe, K.Khine Thu, Thida Tun, Mi Kun Kaw San, Nyein Chan Pyae, and Nu Nu Aye, “Bioequivalence Study of Two Formulations of Tramadol Capsules in Healthy Myanmar Volunteers,” PHARMACEUTICAL AND BIOMEDICAL RESEARCH, vol. 5, no. 4, pp. 35–44, 2019, [Online]. Available: https://sid.ir/paper/756516/en

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