Trial reportClinical drug investigation2014
Pharmacokinetic bioequivalence studies of a fixed-dose combination of tamsulosin and dutasteride in healthy volunteers.
Trial report in Clinical drug investigation, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 3 registered trials, which are not on this map. Cited by 3 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
An Open-label, Randomized, Single Dose, Two-Period Crossover Study to Determine the Bioavailability of a Fixed Dose Combination Capsule Formulation of Dutasteride and Tamsulosin Hydrochloride (0.5mg/0.2mg) Relative to Co-administration of Dutasteride 0.5mg Capsules and Tamsulosin Hydrochloride 0.2mg
An Open-label, Randomized, Single Dose, Four-Period Crossover Study to Compare the Bioavailability of Fixed Dose Combination Capsule Formulations of Dutasteride and Tamsulosin Hydrochloride (0.5 mg/0.2 mg) With 10% and 15% of Enteric Coated Pellets With Harnal-D Tablets and Harnal Capsules Co-administered With Dutasteride (0.5 mg) Soft Gel Capsules in Healthy Male Subjects of North East Asian Ancestry
An Open-label, Randomized, Single Dose, Multi-stage, Cross-over Study to Determine the Relative Bioavailability of Fixed Dose Combination Products Containing a 3-oblong Dutasteride Soft Gel Capsule and Tamsulosin (0.5 mg Dutasteride /0.2 mg Tamsulosin HCl) Pellets Having a Range of Tamsulosin Release Rates Produced by Different Mixtures of Enteric Coated and Uncoated Pellets Relative to Harnal-D Tablets, in Healthy Male Subjects of North East Asian Ancestry.
Who cites it
3 citing papers in PubMed, 1 synthesis or guideline pooled it, 9 citations in OpenAlex.
- Pooled it
- Physiologically based pharmacokinetic (PBPK) modelling of tamsulosin related to CYP2D6*10 allele.Archives of pharmacal research · 2021Trial
- Impact of Formulation on the Pharmacokinetic Profile of Dutasteride.Clinical drug investigation · 2016Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
objectivesThe combination of dutasteride and tamsulosin may be more effective for the treatment of symptomatic benign prostatic hyperplasia than either treatment alone. We report the results of three pharmacokinetics and tolerability studies, which used a dutasteride/tamsulosin HCl (0.5 mg/0.2 mg) fixed-dose combination (FDC) capsules containing a small dutasteride soft gelatin capsule (smaller than commercial Avodart™) and modified-release tamsulosin pellets that have different amounts of enteric coating. These studies compared the test products to commercial Avodart™ (dutasteride 0.5 mg) and two different commercial tamsulosin HCl 0.2 mg products, Harnal™ Capsules or Harnal-D™ Tablets, which are reportedly bioequivalent to each other.
methodsAll three studies were randomized single-dose studies in healthy male adults. Study 1 [N = 86 (NCT01254071)] was a two-period crossover study of a dutasteride/tamsulosin HCl FDC versus coadministered Avodart™ and Harnal-D™ Tablets. The pharmacokinetics of both dutasteride and tamsulosin were studied. Study 2 [N = 27 (NCT01471678)] was a four-period crossover study of dutasteride/tamsulosin HCl FDC formulations versus Avodart™ and Harnal™ Capsules or Harnal-D™ Tablets. Only the pharmacokinetics of tamsulosin were studied. Study 3 [N = 40 (NCT01495026)] was a two-period study of dutasteride/tamsulosin HCl FDC formulations versus coadministered Avodart™ and Harnal-D™ Tablets. In this study, only the pharmacokinetics of tamsulosin were studied. Study 2 assessed fed-state pharmacokinetics. Studies 1 and 3 assessed fed- and fasted-state pharmacokinetics.
resultsAll dutasteride/tamsulosin HCl FDC formulations and coadministered treatments were well-tolerated. In Study 1, the FDC dutasteride was bioequivalent to Avodart™ coadministered with tamsulosin under fed and fasted conditions. In Study 1, the FDC tamsulosin had a slower release than commercial Harnal-D™ Tablets coadministered with dutasteride (fed and fasted state). In Study 2, the FDC tamsulosin containing 15 % by weight enteric-coated tamsulosin pellets was bioequivalent to Harnal™ Capsules coadministered with dutasteride in the fed state. In Study 3, the FDC containing 15 % by weight enteric-coated tamsulosin pellets combined with uncoated tamsulosin pellets (coated:uncoated = 10:90) were bioequivalent to Harnal-D™ Tablets coadministered with dutasteride in the fasted state but not the fed state.
conclusionsThe FDC formulations were well-tolerated and some FDC formulations were comparable with concomitant administration of commercially available dutasteride and tamsulosin.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.