Pharmacokinetics and bioequivalence study of two digoxin formulations after single-dose administration in healthy Chinese male volunteers

The pharmacokinetics and relative bioavailability/bioequivalence of two formulations of digoxin (CAS 20830-75-5) were assessed in this paper. The study was conducted in 20 healthy Chinese male volunteers according to an open, randomized, single-blind, 2-way crossover study design with a wash-out phase of 14 days. Blood samples for pharmacokinetic profiling were taken up to 72 h post-dose and digoxin plasma concentrations were determined by a validated liquid chromatography-tandem mass spectrometry (LCMS/MS) method. Based on the plasma concentration-time data of each individual during two periods, pharmacokinetic parameters, Cmax, AUC0-tau, AUC0-infinity and t1/2, were calculated by applying noncompartmental analysis. Pharmacokinetic data for test and reference formulations were analyzed statistically to evaluate bioequivalence of the two formulations. After oral administration, the values of Cmax Tmax, t1/2, AUC0-tau, AUC0-infinity for test and reference formulations were 2.61 +/- 0.98 and 2.68 +/- 1.09 ng/ mL, 1.0 +/- 0.4 and 1.0 +/- 0.4 h, 27.94 +/- 3.14 and 27.56 +/- 3.86 h, 28.57 +/- 4.99 and 28.77 +/- 6.53 ng x h/mL, 33.44 +/- 4.85 and 33.63 +/- 7.57 ng x h/mL, respectively. Both primary target parameters, AUC0-infinity and AUC0-tau, were tested parametrically by analysis of variance (ANOVA). Relative bioavailabilities were 102.5 +/- 19.2% for AUC0-infinity, 102.0 +/- 19.3% for AUC0-tau. Bioequivalence between test and reference formulations was demonstrated for both parameters, AUC0-infinity and AUC0-tau. The 90% confidence intervals of the T/R-ratios of logarithmically transformed data were in the generally accepted range of 80%-125%, which means that the test formulation is bioequivalent to the reference formulation of digoxin.     

曲美布汀分散片健康人体内的药代动力学及生物等效性研究曲美布汀分散片健康人体内的药代动力学及生物等效性研究

目的建立人血浆中曲美布汀的HPLC-ESI-MS测定法,研究曲美布汀在正常人体内的药代动力学行为,评价其两种制剂的生物等效性。方法血浆样品经碱化以环己烷提取,进行HPLC-ESI-MS分析,内标为西布曲明,检测离子为_m/z 388(曲美布汀)、_m/z 280(内标),裂解电压为50 V。20名健康志愿者交叉口服供试片和参比片,剂量均为100 mg。结果受试制剂及参比制剂的曲美布汀消除半衰期分别为(9.2±2.3) h和(9.2±2.8) h,达峰时间分别为(0.9±0.4) h和(1.0±0.3) h,峰浓度分别为(41±20) μg·L^-1和(40±20) μg·L^-1。以AUC_0-24h计算的受试制剂的相对生物利用度为(97±13)%。结论本法灵敏、准确、简便。统计学结果表明两种制剂生物等效。     

Pharmacokinetics and bioequivalence study of two mosapride citrate formulations after single-dose administration in healthy Chinese male volunteers

The pharmacokinetics and relative bioavailability/bioequivalence of two formulations of mosapride citrate (CAS 112885-42-4) were assessed in this study. The study was conducted in 20 healthy Chinese male volunteers according to an open, randomized, single-blind, 2-way crossover study design with a wash-out phase of 7 days. Blood samples for pharmacokinetic profiling were taken up to 12 h post-dose, and mosapride citrate plasma concentrations were determined by a validated liquid chromatography-tandem mass spectrometry (LC-MS/MS) method. Based on the plasma concentration-time data of each individual during two periods, pharmacokinetic parameters, Cmax, AUCo-t,, AUCo-infinity, and t1/2, were calculated by applying non-compartmental analysis. Pharmacokinetic data for test and reference formulations were analyzed statistically to test for bioequivalence of the two formulations. After oral administration, the values of Cmax, Tmax, t1/2, AUCo-t, AUCo-infinity for test and reference formulations were 68.48 +/- 22.95 and 70.69 +/- 23.78 ng/mL, 0.46 +/- 0.20 and 0.49 +/- 0.21 h, 2.30 +/- 0.30 and 2.24 +/- 0.28 h, 161.17 +/- 52.75 and 171.37 +/- 59.02 ng x h/mL, 165.76 +/- 54.34 and 175.77 +/- 60.54 ng x h/mL, respectively. Both primary target parameters, AUCo-infinity and AUCo-t, were tested parametrically by analysis of variance (ANOVA). Relative bioavailabilities were 95.3 +/- 11.3% for AUCo-infinity and 95.2 +/- 11.3% for AUo-t. Bioequivalence between test and reference formulations was demonstrated for both parameters, AUJCo-infinity and AUCo-t. The 90% confidence intervals of the T/R-ratios of logarithmically transformed data were in the generally accepted range of 80-125%. That means that the test formulation is bioequivalent to the reference formulation of mosapride citrate.     

Clarithromycin bioequivalence study of two oral formulations in healthy human volunteers

OBJECTIVE: To assess the bioequivalence of two tablet formulations of clarithromycin (Clamicin 500 mg from Medley Indlistria Farmaceutica, Brazil, as the test formulation, and Biaxin 500 mg from Abbott Industries, USA, as the reference formulation). METHODS: A single 500 mg oral dose of each formulation was administrated in 24 healthy volunteers of both sexes (12 males and 12 females). The study was conducted open, randomized, two-period crossover design with a 7-day interval between doses. The plasma concentrations of clarithromycin were quantified by reversed phase liquid chromatography coupled to tandem mass spectrometry (LC-MS-MS) with positive ion electrospray ionization using multiple reaction monitoring (MRM) method. 14-hydroxyclarithromycin concentration was estimated semiquantitatively as equivalent of clarithromycin/ml. The precision of the method was evaluated using calibration curves and plasma quality control samples. The pharmacokinetic parameters calculated for both compounds included: AUC(0 - 48h), AUC(0 - infinity), Cmax, Cmax/AUC(0 - 48h), Tmax, T1/2 and Ke. RESULTS: Standard curves of clarithromycin in plasma were linear in the range of 0.05 microg x ml(-1) to 10 microg x ml(-1) (r > 0.999). The limit of quantification was 5 ng/ml. Within- and between-run plasma quality control CV were 5.8% and 15.7%, respectively. Inaccuracy within- and between-runs were 14% and 17%, respectively. 90% CI for clarithromycin geometric mean AUC(0 - 48h), AUC(0 - infinity) and Cmax ratios (test/reference) were: 8.7% - 103.1%, 89.4% - 103.7% and 85.4% - 99.6%, respectively, and for hydroxyclarithomycin were 80.3% - 108.6%, 80.1% - 110.1% and 85.4% - 112.6%, respectively. CONCLUSION: The method described for the quantification of charithomycin and its main metabolite is accurate and sensitive. Clamicin was considered bio-equivalent to Biaxin based on the rate and extent of absorption. Since these were no significant differences in the bioequivalence determined using the pharmacokinetic parameters of either clarithromycin or 14-hydroxyclarithromycin, we suggest that future bioequivalence trials of this drug may be performed by quantifying clarithromycin only.     

国产头孢克肟胶囊的人体药动学及其生物利用度研究

目的: 评价头孢克肟国产胶囊剂和参比胶囊在人体内是否生物等效.方法: 采用高效液相色谱法测定18名健康受试者随机、交叉单剂量口服200mg头孢克肟受试或参比胶囊后血浆头孢克肟浓度.结果: 国产头孢克肟胶囊剂和参比制剂的AUC0-t均值分别为(15.918±5.591)和(15.873±4.887) mg·h·L-1, 实测Cmax均值分别为(2.331±0.781)和(2.276±0.704)mg·L-1, 实测Tmax均值分别为(4.500±0.618)和(4.278±0.752)h. 受试国产头孢克肟胶囊的相对生物利用度为(103.5±33.6)%. 结论: 经统计学分析,受试制剂和参比制剂具有生物等效性.     

氟康唑在健康人体的药物动力学和生物等效性

目的 研究氟康唑(抗真菌药)在健康人体的药物动力学及生物等效性.方法 20名健康志愿者随机双交叉、单剂量口服受试制剂和参比制剂150 mg,用高效液相色谱-串联质谱联法测定人血浆中氟康唑的浓度.使用DAS软件拟合计算药物动力学参数和相对生物利用度,评价两制剂的生物等效性.结果 受试制剂和参比制剂药物动力学参数:Cmax分别为(3.26±0.54),(3.17±0.41)μg·mL-1;tmax分别为(1.42±0.65),(1.62±0.75)h;t1/2分别为(29.75±4.89),(30.34±4.67)h;AUC0-120h分别为(131.4 ±23.4),(135.2±20.6)μg·mL-1·h;AUC0-∞分别为(140.5±26.3),(145.0±23.6)μg·mL-1·h.受试制剂相对于参比制剂的生物利用度为(97.2±7.6)%.结论 2种制剂具有生物等效性.     

Pharmacokinetics of two novel bicalutamide formulations in healthy male volunteers

The oral bioavailability of two investigational formulations of bicalutamide was compared with the current clinical formulation. The first formulation was amorphous R-/S-bicalutamide in solid dispersion with a polymeric matrix of hydroxypropyl methylcellulose phthalate (HP55S) (R-/S-bicalutamide/HP55S); the second was R-bicalutamide alone in a solid dispersion with HP55S (R-bicalutamide/HP55S). Study 1 was a two-period, incomplete crossover study comparing a single dose of bicalutamide 150 mg with single 150 and 450 mg doses of R-/S-bicalutamide/HP55S in healthy male volunteers. Study 2 was a two-period, dose-escalation study of single doses of R-bicalutamide/HP55S in healthy male volunteers. Compared with bicalutamide 150 mg, both formulations appeared more bioavailable, with a faster rate of systemic absorption. The C(max) and AUC of R-bicalutamide/HP55S increased approximately proportionally with dose. The inter-subject variability of R-bicalutamide exposure for R-/S-bicalutamide/HP55S 150 mg increased 2.19-fold compared with bicalutamide 150 mg. Clinically insignificant increases in circulating luteinizing hormone and testosterone plasma concentrations were observed for both R-bicalutamide/HP55S and R-/S-bicalutamide/HP55S compared with bicalutamide 150 mg. Both new bicalutamide formulations were well tolerated.     

氟康唑在健康人体的药代动力学及生物等效性

目的评价单剂量口服3种氟康唑制剂(抗真菌药)在健康受试者体内的生物等效性。方法采用三交叉全排列组合设计,18名健康男性受试者随机分为3组,自身交叉口服单剂量试验制剂氟康唑片、氟康唑胶囊和参比氟康唑胶囊600mg,采用液制联用法测定人血浆中氟康唑浓度。结果由DASS2.0软件计算的主要药代动力学参数:Cmax分别为(9.3±1.5)、(9.5±1.4)、(8.9±1.6)μg·mL-1;tmax分别为(1.9±0.7)、(1.9±0.6)、(2.0±0.7)h;t1/2分别为(32.4±6.1)、(34.5±5.8)、(32.6±6.4)h;AUC0-t分别为(358.7±75.0)、(359.5±76.1)、(346.0±78.4)μg.h·mL-1;AUC0-∞分别为(415.3±81.6)、(419.5±82.4)、(401.6±80.6)μg·h·mL-1。结论2种氟康唑受试制剂与参比制剂具有相同的生物效应。     

Pharmacokinetics and bioequivalence of tiropramide in healthy volunteers

Two formulations of tiropramide ((+/-)alpha-(benzoylamino)-4-[2-(diethylamino) ethoxy]-N,N-dipropyl-benzenepropanamide hydrochloride, CAS 55837-29-1), an antispasmodic agent, were orally administered to 16 healthy volunteers by the Latin cross-over design with the purpose of evaluating bioequivalence and pharmacokinetics of tiropramide. Tiropramide in human plasma was determined by a gas chromatography/nitrogen phosphorus detector. The detection limit of tiropramide was 5 ng/ml. Cmax values of test and reference formulations were 93.9 +/- 54.3 and 96.4 +/- 51.6 ng/ml, respectively. AUC0-->last and AUC0-->inf were 330.7 +/- 193.9 and 349.5 +/- 205.3 ng.h/ml, respectively, for the test formulation, 348.9 +/- 207.7 and 380.8 +/- 239.0 ng.h/ml, respectively, for the reference formulation. The terminal half-life was 2.34-2.61 h. Bioavailability differences for Cmax and AUC0-->last were -2.48% and -5.22%, respectively. Minimum detection differences were less than 20% for both Cmax and AUC0-->last. The 90% confidence limits of geometric mean values for logarithmically transformed Cmax and AUCs were within 0.8-1.25. Based on these results, the two formulations of tiropramide are considered to be bioequivalent.     

那格列奈胶囊和片剂的人体药物动力学及生物等效性研究

目的建立高效液相色谱法测定人血浆中那格列奈浓度的方法,研究那格列奈胶囊和片剂的药物动力学及生物等效性。方法以迪马C18(250 mm×1.5 mm,5μm)为分析柱,乙腈-0.02 mol.L-1乙酸胺缓冲液(40∶60)为流动相,流速为1.0 mL.min-1,紫外检测波长为214 nm,柱温为40℃,瑞格列奈为内标,测定人血浆中那格列奈的浓度。结果在浓度0.187 5~12μg.mL-1,那格列奈和内标峰面积比值与浓度呈良好的线性关系(r2=0.995 47),最小检出浓度为0.093 75μg.mL-1。那格列奈的平均回收率为103%±7%,日内、日间RSD均≤6.8%,那格列奈体内过程符合二室模型,tmax、Cmax、t1/2β、AUC0~∞h分别为(1.36±0.40)h、(6.42±0.30)μg.mL-1、(1.36±2.26)h、(16.10±1.54)μg.h.mL-1。结论本方法简便、灵敏、准确,可用于那格列奈血药浓度检测和药物动力学研究。经统计学分析,试验制剂(胶囊剂)和参比制剂(片剂)具有生物等效性。     

左旋咪唑2种搽剂的人体药动学及生物等效性

目的建立人血浆中左旋咪唑浓度的LC-MS/MS测定方法,并评价左旋咪唑搽剂的药动学特征及比较2种制剂的人体生物等效性。方法 20名男性健康受试者随机分成2组,分别交叉给予受试制剂和参比制剂各5 mL:500 mg,采用LC-MS/MS测定左旋咪唑的浓度,色谱柱为Agilent HC-C8,流动相为乙腈-10 mmol.L-1的醋酸铵水溶液(70∶30,V/V),流速为0.5 mL.min-1,柱温为40℃;质谱采用电喷雾电离,正离子多离子反应监测模式,检测离子为左旋咪唑m/z 205.1→178.2,甲苯咪唑m/z 296.1→264.1,估算左旋咪唑的药动学参数及2种制剂的人体生物等效性。结果人血浆中左旋咪唑的最低定量限为0.1μg.L-1,在0.1～30μg.L-1范围内线性关系良好,批内及批间精密度RSD均小于15%。受试制剂与参比制剂的各主要药动学参数:tmax分别为(57.6±21.9)h和(58.8±20.9)h,ρmax分别为(23.1±5.8)μg.L-1和(22.8±5.7)μg.L-1,t1/2分别为(61.5±26.8)h和(70.3±40.3)h,用梯形法计算AUC0-240 h分别为(2 066.7±318.8)μg.h.L-1和(2 071.8±450.1)μg.h.L-1。结论通过建立的测定方法,对主要药动学参数进行比较,评价结果显示2种制剂生物等效。     

Pharmacokinetics and bioequivalence of two ibuprofen formulations

In an open controlled randomized cross-over study in 16 healthy male and female volunteers the bioavailability of ibuprofen (CAS 15687-27-1) sugar-coated tablets (Dolo-Dolgit) was tested versus film-coated tablets containing ibuprofen 600 mg. As it results from the AUC evaluation, the bioavailability of both preparations is very good and almost identical. The ibuprofen concentrations achieved after administration of the test preparation, however, are significantly higher (Cmax = 52.03 micrograms/ml) than those achieved after the reference preparation showing a Cmax of 40.32 micrograms/ml. The tmax of 1.0 h is also significantly shorter than after the reference preparation (tmax = 1.5 h). The t1/2 beta after both the test and the reference preparation is within the known range, i.e. 1.8 h and 1.4 h, respectively. Even in long-term treatment with high dosages, administered 3-4 times daily, there is no accumulation of the active ingredient. Concerning the therapeutic relevance, special attention is to be given to the different time-dependent drug concentrations in the central compartment and in the target compartment. Both the higher Cmax and the shorter tmax achieved following administration of the test preparation are of therapeutic relevance.     

Pharmacokinetics and bioequivalence study of two brands of loxoprofen tablets in healthy volunteers

The aims of this study were to assess the pharmacokinetics and bioequivalence of two brands of loxoprofen (CAS 80832-23-6) 60 mg tablets in healthy male volunteers. The several pharmacokinetic parameters were evaluated after an oral administration after an overnight fast according to a single dose, two-sequence, and cross-over randomized design with a 1-week washout interval. Serial blood samples were collected throughout 10 h after administration of the reference and test drug. Plasma was analyzed by validated HPLC with UV detection. Several pharmacokinetic parameters, including AUC(infnity), AUC(t), C(max), T(max), T1/2, and Ke were determined from blood concentrations of both formulations. AUC(t), AUC(infinity) and C(max) were evaluated for bioequivalence after log-transformation of data using ANOVA with 90% confidence interval level. The parametric 90% confidence intervals of AUC(t), AUC(infinity), and C(max) were 90.13-106.34%, 91.43-106.94%, and 91.17-108.53%, respectively. All of the tested parameters were within the acceptable range of 80-125%. Based on these statistical considerations, it was concluded that the test drug was bioequivalent to the reference drug.     

氟罗沙星胶囊在健康人体的药代动力学和生物等效性

目的研究氟罗沙星胶囊（第3代喹诺酮类抗生素）的药代动力学并评价2种国产制剂的生物等效性。方法用随机分组自身对照方法，20例健康男性志愿者单次口服氟罗沙星参比和受试制剂200mg后，用高效液相色谱一紫外法测定血浆中氟罗沙星浓度，用3P97软件进行药代动力学参数的计算及生物等效性评价。结果2种氟罗沙星胶囊在健康志愿者体内的药一时曲线均符合一室开放模型，参比与受试制剂的主要药代动力学参数：Cmax分别为（2．90±0．55），（2．94±0．53）μg·mL^-1；tmax分别为（1．09±0．44），（1．09±0．38）h；t1/2分别为（12．64±1．71），（13．14±1．78）h；AUC0-t分别为（29．86±3．40），（32．81±4．54）μg·h·mL^-1；AUC0-∞分别为（32．54±3．90），（35．70±5．53）μg·h·mL^-1。受试制剂的相对生物利用度为（110．1±11．4）％。结论氟罗沙星的受试制剂和参比制剂在健康人体有生物等效性。     

美索巴莫胶囊在健康人体的药代动力学及生物等效性

目的研究美索巴莫胶囊(肌松药)在健康人体的药代动力学及其生物等效性。方法按两制剂双周期自身对照交叉试验设计,18名男性健康志愿者分别单剂量口服2种国产美索巴莫胶囊(参比制剂)和(受试制剂),用RP-HPLC法测定血药浓度,计算药代动力学参数,并评价2制剂的生物等效性。结果口服美索巴莫胶囊参比制剂和受试制剂750mg后的主要药代动力学参数:Cmax分别为(13.87±2.44)和(14.34±2.99)μg.mL-1;tmax分别为(0.82±0.21)和(0.80±0.23)h;AUC0-12分别为(32.79±10.03)和(33.90±8.40)μg.h.mL-1;AUC0-∞分别为(33.91±9.89)和(35.00±8.79)μg.mL-1;t1/2Ke分别为(1.91±0.58)和(1.79±0.59)h;美索巴莫的相对生物利用度F0-12平均为(105.0±11.2)%,F0-∞平均为(104.3±10.2)%。结论2种美索巴莫胶囊制剂生物等效。     

利巴韦林片在人体的药物动力学和生物等效性研究

目的研究利巴韦林片在健康人体内的药物动力学,并对2种制剂的生物等效性进行判定。方法采用液质联用（LC-MS／MS）法测定血浆中利巴韦林浓度并计算其主要药动学参数。结果受试制剂和参比制剂中利巴韦林的主要药动学参数如下：tmax分别为（1．35±0．38）、（1．30±0．50）h;Cmax分别为（674．8±227．7）、（693．94±223．3）ng·mL-1,t1／2分别为（25．6±6．0）、（26．6±5．3）h;AUC0-1分别为（8606．2±2132．0）、（8452．0±1978．8）ng·h·mL-1,AUC0-∞分别为（9903．3±2494．1）、（9632．1±2404．2）ng·h·mL-1,相对生物利用度为（102．2±9．5）％。结论2种利巴韦林制剂具有生物等效性。     

两种奥替溴铵胶囊在健康人体内的药动学和生物等效性

目的比较两种奥替溴铵胶囊在健康人体内的药动学和生物等效性。方法 21名中国健康男性受试者随机交叉单次口服奥替溴铵胶囊受试制剂和参比制剂80 mg后,采用经验证的高效液相色谱-质谱联用法测定血浆中的奥替溴铵的浓度,采用DAS 2.1.1软件计算药动学参数并进行生物等效性统计分析。结果受试者单次口服受试制剂和参比制剂后,血浆中奥替溴铵的ρmax、tmax和AUC0-t分别为(5.252±4.581)和(4.372±2.410)ng·m L-1、(1.5±0.9)和(1.5±1.1)h、(21.51±18.60)和(20.40±10.74)ng·h·m L-1,受试制剂的ρmax和AUC0-24的90%置信区间在参比制剂的生物等效范围之内。结论两种奥替溴铵胶囊在人体内具有生物等效性。     

愈创甘油醚片在健康人体中的药动学和生物等效性

目的研究愈创甘油醚片在健康中国人体内药动学和生物等效性。方法采用双周期交叉试验设计,20名健康男性受试者随机交叉单剂量口服愈创甘油醚片试验制剂和参比制剂0．2g,以高效液相色谱-质谱联用法测定人血浆中愈创甘油醚经时血药浓度,用DAS Ver2．0软件计算药动学参数,评价两制剂的生物等效性。结果愈创甘油醚片试验制剂和参比制剂的主要药动学参数ρmax分别为（909．3±314．7）和（874．1±301．5）μg·L^-1;tmax分别为（0．50±0．28）和（0．56±0．25）h;t1/2,分别为（1．54±0．92）和（1．53±1．08）h;AUC0→1分别为（1441-8±411．2）和（1486．9±482．8）μg·h·L^-1,AUC0→∞分别为（1456．5±418．2）和（1505．1±490．1）μg·h·L^-1;试验制剂的AUC0→1、AUC0→∞、ρmax的90％置信区间分别为参比制剂相应参数的91％-118％、91％-118％和94％-116％。以AUC0→t计算试验制剂中愈创甘油醚对参比制剂的相对生物利用度F为（99．7±15．1）％。结论经方差分析及双单侧t检验结果显示,试验制剂和参比制剂具有生物等效性。     

螺内酯片健康人体药动学及生物等效性评价

目的:研究螺内酯在中国健康人体内的药动学和生物等效性。方法:采用随机双周期交叉设计, 18名健康志愿者单剂量口服200 mg螺内酯,HPLC法测定血浆中螺内酯的代谢物坎利酮的浓度。结果:参比制剂和受试制剂药-时曲线均符合一房室模型,受试制剂和参比制剂的代谢物坎利酮的药动学参数如下:t_(mux)分别为(4．2±s 1．2)和(4．7±1．6)h,C_(mux)分别为(160±47)和(150±43)μg·L~(-1),t_(1/2ke)分别为(18±5)和(19±4)h,AUC_(0～72)分别为(3168±688)和(3267±627)μg·h·L~(-1),AUC_(0～∞)分别为(3611±768)和(3759±642)μg·h·L~(1-)。与参比制剂相比,受试制剂的相对生物利用度为(106±26)％。结论:所建立的方法适用于螺内酯的人体药动学研究;经方差分析和双向单侧t检验证明,2种制剂具有生物等效性。     

西洛他唑片在健康人体的药代动力学和生物等效性

目的 研究西洛他唑片剂的药代动力学及相对生物利用度。方法 用随机分组自身对照方法,18例健康男性受试者单次口服西洛他唑参比和试验制剂100mg后,用反相高效液相色谱法测定血浆中西洛他唑的浓度,用3P97药代动力学软件进行参数计算及生物等效性评价。结果 2种西洛他唑片在健康受试者体内的药-时曲线均符合二室模型,参比与试验制剂的主要药动学参数:Cmax分别为(844 ± 335),(937 ± 294) ng.mL-1;tmax为(3.17 ± 1.10), (3.22 ± 1.06) h;t1/2α为(2.30 ± 1.08), (2.23 ± 0.93) h;t1/2β为(11.97 ± 3.54), (11.13 ± 2.70) h ;AUC0-t为(10.58 ± 3.50), (10.95 ± 3.23) mg.h.mL-1,AUC0-∞为(11.14 ± 3.50), (11.43 ± 3.23) mg.h.mL-1。试验制剂的相对生物利用度分别为F0-t=(108.39 ± 29.72)%和F0-∞=(106.83 ± 27.84)%。结论 试验和参比制剂具有生物等效性。