Related Experiment Video
Updated: Mar 8, 2026
11:51
Combining Behavioral Endocrinology and Experimental Economics: Testosterone and Social Decision Making
Published on: March 2, 2011
15.8K
Study of compression effect on testosterone tablets.
Loise Silveira da Silva1,2, Izabelle de Mello Gindri3, Maria Johann Fensterseifer1,2
1Biomechanical Engineering Laboratory, LEBm, University Hospital & Department of Mechanical Engineering, Federal University of Santa Catarina (UFSC), Florianópolis, Santa Catarina, Brazil.
Drug Development and Industrial Pharmacy
|March 7, 2026
Summary
This study analyzed testosterone tablet properties under different compression loads. High loads caused tablet defects, but dissolution was minimally affected by load or additives, highlighting manufacturing process importance.
Area of Science:
- Pharmaceutical Technology
- Materials Science
Background:
- Testosterone implants erode over 4-5 months for drug absorption.
- Testosterone exists in anhydrous and hydrated polymorphic forms.
- Compression may alter API polymorphic forms, impacting dissolution.
Purpose of the Study:
- Analyze physicochemical properties and dissolution of testosterone tablets.
- Evaluate the impact of compression load (2 vs. 15 tons) and additives.
- Assess compression-induced polymorphic changes in testosterone.
Main Methods:
- Tablet manufacturing via compression molding.
- Analysis using Differential Scanning Calorimetry (DSC), X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Fourier-Transform Infrared Spectroscopy (FTIR).
- Drug dissolution testing.
Main Results:
- 15-ton compression load resulted in fragile tablets with defects (lamination, cracks).
- DSC and FTIR indicated structural water presence; XRD confirmed anhydrous form.
- Dissolution was only slightly influenced by compression load and additives.
Conclusions:
- Compression load significantly impacts tablet physical integrity.
- Polymorphic form remained largely anhydrous despite compression.
- Compression load and additives have minor effects on testosterone tablet dissolution profiles.
Related Concept Videos
01:26Testosterone: Functions and Regulation
2.7K
The intricate hormonal interplay essential for male reproductive health begins with the release of gonadotropin-releasing hormone (GnRH) by the hypothalamus. This hormone prompts the pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). LH targets the Leydig cells in the testes, stimulating them to produce and release testosterone. In concert with testosterone, FSH acts on the Sertoli cells within the seminiferous tubules to facilitate the release of...
2.7K
01:28Factors Influencing Drug Absorption: Pharmaceutical Parameters
683
Solid dosage forms such as tablets and capsules undergo rigorous manufacturing processes to ensure stability and effectiveness. Their dissolution and absorption properties are influenced significantly by the choice of excipients (inactive ingredients that serve various roles in the formulation), and the methodology applied during production. The manufacturing parameters, such as compression force and granulation techniques, significantly affect dissolution rates. Elevated compression forces...
683
01:18Formulation and Manufacturing Process: Physical Attributes of Generic Tablets and Capsules
390
Bioequivalence in generic drugs, such as tablets and capsules, refers to their pharmaceutical equivalence to the brand-name counterparts. However, for therapeutic equivalence, manufacturers must also consider physical attributes like size, shape, and weight (FDA Guidance for Industry, December 2003). Discrepancies in these aspects could impact patient compliance and cause medication errors. For instance, swallowing difficulties, often experienced with larger tablets or capsules, can lead to...
390
01:20Desensitization and Tachyphylaxis
3.3K
Tachyphylaxis is described as a rapid decrease in response to a drug after repeated or continuous administration of the same drug dose. It is a phenomenon where the body becomes less responsive to a particular substance or intervention over time, requiring higher doses or stronger interventions to achieve the same effect. It results from adaptive changes in the body's receptors, signaling pathways, or physiological processes that occur in response to prolonged exposure to a stimulus.
3.3K
01:18Antihypertensive Drugs: Action of Calcium Channel Blockers
2.0K
Calcium ions are essential to contract smooth muscle cells in blood vessels. They enter these cells through voltage-dependent calcium channels, specifically L-type calcium channels in the cell membrane. These L-type calcium channels are integral to the excitation-contraction coupling process in smooth muscle. When a stimulus is received by smooth muscle cells, their membrane depolarizes. This alteration in membrane potential instigates the opening of L-type calcium channels. As a result,...
2.0K
01:30Combined Effects of Drugs: Antagonism
12.0K
The combined effects of drugs can result in various interactions, of which an important type is antagonism. Antagonism is a mechanism where one drug inhibits or counteracts the effects of another drug. Antagonism can occur through various means, including receptor binding, allosteric modulation, functional interaction, chemical reactions, and pharmacokinetic processes.
The most common type is receptor antagonism, where one drug acts as an antagonist to block the effects of another drug by...
The most common type is receptor antagonism, where one drug acts as an antagonist to block the effects of another drug by...
12.0K