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Related Concept Videos

Intrauterine Drug Delivery Systems01:21

Intrauterine Drug Delivery Systems

Controlled-release systems for intravaginal and intrauterine drug delivery have been developed primarily for the administration of contraceptive steroid hormones. These delivery routes circumvent first-pass hepatic metabolism, thereby enhancing bioavailability and allowing for reduced systemic dosages compared to oral administration. Such approaches contribute to improved therapeutic efficacy and patient compliance, particularly in long-term contraceptive regimens.Intravaginal Drug Delivery...
Modified-Release Drug Delivery Systems: Rate-Programmed II01:19

Modified-Release Drug Delivery Systems: Rate-Programmed II

Rate-programmed drug delivery systems release drugs in a controlled manner to maintain therapeutic levels. Three main designs include reservoir, matrix, and hybrid systems.Reservoir systems consist of a drug core enclosed within a membrane that controls drug release. In non-swelling reservoir systems, polymers like ethyl cellulose or polymethacrylates are used. These do not hydrate in aqueous media and control release through membrane thickness, porosity, or insolubility. This type includes...
Prodrugs01:30

Prodrugs

Prodrugs are a class of pharmaceutical compounds that undergo a biotransformation process within the body to be converted into a pharmacologically active drug. Prodrugs are designed to improve the therapeutic properties of the parent drug, such as enhancing bioavailability, increasing stability, or reducing toxicity. The concept of prodrugs revolves around modifying the chemical structure of the original drug to make it more effective or convenient for administration.
Prodrugs help overcome...
Pharmaceutical Alternatives: Stability-Related Therapeutic Nonequivalence01:22

Pharmaceutical Alternatives: Stability-Related Therapeutic Nonequivalence

Generic intravenous (IV) drugs are considered bioequivalent to their branded counterparts due to their 100% bioavailability upon administration. However, variations in stability among different drug products can significantly influence their therapeutic performance, even if they are pharmaceutically equivalent.Cefuroxime, a prophylactic antimicrobial, is often used as a single-dose IV injection for patients undergoing coronary artery bypass grafting surgery. A 3 g dose typically provides...
Modified-Release Drug Delivery Systems: Overview01:19

Modified-Release Drug Delivery Systems: Overview

Modified-release dosage forms are designed to address the limitations of drugs with short biological half-lives. These forms maintain stable therapeutic drug concentrations over extended periods, reducing the need for frequent dosing. A consistent drug level helps minimize peak-trough fluctuations, which can reduce adverse effects, lower the risk of drug resistance, and improve overall treatment effectiveness.One common type of modified-release form is the extended-release (ER) formulation. ER...
Drug Dosage Regimen: Overview01:15

Drug Dosage Regimen: Overview

A drug dosage regimen describes the specific instructions and schedule for administering a drug to a patient. It considers factors such as drug dosage, frequency, route of administration, and duration of treatment. Designing an appropriate dosage regimen for a patient aims to achieve a target drug concentration at the site of action.
Typically, the starting dose and dosing interval are guided by the manufacturer's recommendations based on clinical trials conducted during and after drug...

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Related Experiment Video

Updated: Jul 5, 2026

Reproductive Techniques for Ovarian Monitoring and Control in Amphibians
04:37

Reproductive Techniques for Ovarian Monitoring and Control in Amphibians

Published on: May 12, 2019

Depot-medroxyprogesterone acetate: an update.

Sayed Bakry1, Zaher O Merhi, Trudy J Scalise

  • 1Center for Genetic Engineering and Embryo Culture, Al Azhar University, Cairo 11884, Egypt. sayed.bakry@med.nyu.edu

Archives of Gynecology and Obstetrics
|May 13, 2008
PubMed
Summary
This summary is machine-generated.

Depo-Provera (depot-medroxyprogesterone acetate) is a safe and effective contraceptive. Understanding patient concerns about side effects can improve adherence and continuation of this widely used method.

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Area of Science:

  • Reproductive Health
  • Endocrinology
  • Pharmacology

Background:

  • Depo-Provera (depot-medroxyprogesterone acetate) is an FDA-approved contraceptive used globally by millions.
  • Progestins, while endogenous, can have adverse effects when used exogenously as contraceptives.

Purpose of the Study:

  • To review the usage and side effects of Depo-Provera.
  • To address the dichotomy of progestin contraceptives as beneficial or detrimental.

Main Methods:

  • Review of long-term data on Depo-Provera efficacy and safety.
  • Analysis of patient concerns regarding immediate side effects.

Main Results:

  • Depo-Provera (depot-medroxyprogesterone acetate) is highly effective and does not increase risks of cardiovascular events, breast cancer, or fractures.
  • Common patient concerns include menstrual changes, weight gain, and mood disturbances.

Conclusions:

  • Patient concerns about immediate side effects can lead to discontinuation.
  • Improved counseling strategies addressing women's experiences are crucial for enhancing contraceptive continuation and adherence.