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Shin DJ, Chae BR, Goo YT, Yoon HY, Kim CH, Sohn SI, Oh D, Lee A, Song SH, Choi YW. Improved Dissolution and Oral Bioavailability of Valsartan Using a Solidified Supersaturable Self-Microemulsifying Drug Delivery System Containing Gelucire ® 44/14. Pharmaceutics 2019; 11:pharmaceutics11020058. [PMID: 30708963 PMCID: PMC6409713 DOI: 10.3390/pharmaceutics11020058] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 01/24/2019] [Accepted: 01/30/2019] [Indexed: 01/22/2023] Open
Abstract
To improve the dissolution and oral bioavailability of valsartan (VST), we previously formulated a supersaturable self-microemulsifying drug delivery system (SuSMED) composed of Capmul® MCM (oil), Tween® 80 (surfactant), Transcutol® P (cosurfactant), and Poloxamer 407 (precipitation inhibitor) but encountered a stability problem (Transcutol® P-induced weight loss in storage) after solidification. In the present study, replacing Transcutol® P with Gelucire® 44/14 resulted in a novel SuSMED formulation, wherein the total amount of surfactant/cosurfactant was less than that of the previous formulation. Solidified SuSMED (S-SuSMED) granules were prepared by blending VST-containing SuSMED with selective solid carriers, L-HPC and Florite® PS-10, wherein VST existed in an amorphous state. S-SuSMED tablets fabricated by direct compression with additional excipients were sufficiently stable in terms of drug content and impurity changes after 6 months of storage at accelerated conditions (40 ± 2 °C and 75 ± 5% relative humidity). Consequently, enhanced dissolution was obtained (pH 1.2, 2 h): 6-fold for S-SuSMED granules against raw VST; 2.3-fold for S-SuSMED tablets against Diovan® (reference tablet). S-SuSMED tablets increased oral bioavailability in rats (10 mg/kg VST dose): approximately 177–198% versus raw VST and Diovan®. Therefore, VST-loaded S-SuSMED formulations might be good candidates for practical development in the pharmaceutical industry.
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Affiliation(s)
- Dong Jun Shin
- College of Pharmacy, Chung-Ang University, 84 Heuksuk-ro, Dongjak-gu, Seoul 06974, Korea.
| | - Bo Ram Chae
- College of Pharmacy, Chung-Ang University, 84 Heuksuk-ro, Dongjak-gu, Seoul 06974, Korea.
- Daewon Pharm. Co., Ltd, 520 Cheonhodae-ro, Gwangjin-gu, Seoul 04994, Korea.
| | - Yoon Tae Goo
- College of Pharmacy, Chung-Ang University, 84 Heuksuk-ro, Dongjak-gu, Seoul 06974, Korea.
| | - Ho Yub Yoon
- College of Pharmacy, Chung-Ang University, 84 Heuksuk-ro, Dongjak-gu, Seoul 06974, Korea.
| | - Chang Hyun Kim
- College of Pharmacy, Chung-Ang University, 84 Heuksuk-ro, Dongjak-gu, Seoul 06974, Korea.
| | - Se Il Sohn
- Daewon Pharm. Co., Ltd, 520 Cheonhodae-ro, Gwangjin-gu, Seoul 04994, Korea.
| | - Dongho Oh
- Daewon Pharm. Co., Ltd, 520 Cheonhodae-ro, Gwangjin-gu, Seoul 04994, Korea.
| | - Ahram Lee
- Daewon Pharm. Co., Ltd, 520 Cheonhodae-ro, Gwangjin-gu, Seoul 04994, Korea.
| | - Seh Hyon Song
- College of Pharmacy, Chung-Ang University, 84 Heuksuk-ro, Dongjak-gu, Seoul 06974, Korea.
| | - Young Wook Choi
- College of Pharmacy, Chung-Ang University, 84 Heuksuk-ro, Dongjak-gu, Seoul 06974, Korea.
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Jouyban-Gharamaleki V, Soleymani J, Jouyban-Gharamaleki K, Suleymanov TA, Jouyban A. Solubilization of celecoxib, lamotrigine and phenytoin using ethanol and a nonionic surfactant. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.08.080] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Khanfar M, Al-Nimry S. Stabilization and Amorphization of Lovastatin Using Different Types of Silica. AAPS PharmSciTech 2017; 18:2358-2367. [PMID: 28127721 DOI: 10.1208/s12249-017-0717-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 01/06/2017] [Indexed: 12/19/2022] Open
Abstract
Lovastatin (LOV), an antihyperlipidimic agent, is characterized by low solubility/poor dissolution and, thus, low bioavailability (<5%). A beneficial effect on its bioavailability could result from improving its dissolution. One of the most common methods used to enhance dissolution is the preparation of solid dispersions. Solid dispersions of LOV and silica with different surface areas were prepared. The effects of the type of silica, ratio of drug/silica, incubation period with silica, and the effect of surface area were all studied. Characterization of the prepared formulae for possible interaction between drug and polymer was carried out using differential scanning calorimetery, Fourier transform infrared spectroscopy, powder X-ray diffraction, surface area determination, and scanning electron microscopy. The dissolution profiles of all prepared formulae were constructed and evaluated. It was found that the formula made of LOV and Sylysia 350 FCP in a ratio of 1:5 after an incubation period of 48 h resulted in the best release, and it was stable after 3 months storage at 75% RH and 40°C.
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