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Fixed-Dose Combination Formulations in Solid Oral Drug Therapy: Advantages, Limitations, and Design Features
Christi A Wilkins1, Hannlie Hamman1, Josias H Hamman1
1Centre of Excellence for Pharmaceutical Sciences (Pharmacen™), Faculty of Health Sciences, North-West University, Private Bag X6001, Potchefstroom 2520, South Africa.
Fixed-dose combination (FDC) therapy offers an alternative to sequential drug addition for complex conditions. This review critically examines FDC drug therapy, its benefits, and challenges in patient adherence.
Area of Science:
- Pharmaceutical Sciences
- Clinical Pharmacy
- Drug Development
Background:
- Monotherapy is standard for hypertension and diabetes, but polytherapy is essential for conditions like HIV/AIDS, tuberculosis, and malaria.
- Patient non-adherence to polytherapy can impede successful treatment outcomes.
- Polytherapy can be administered via sequential drug addition or fixed-dose combination (FDC) products.
Purpose of the Study:
- To critically review the utilization of fixed-dose combination (FDC) drug therapy.
- To provide insights into currently available FDC products.
- To identify research gaps and discuss formulation considerations for new FDC development.
Main Methods:
- Literature review of fixed-dose combination (FDC) drug therapy.
- Analysis of commercially available FDC products.
- Discussion of formulation challenges and scientific considerations.
Main Results:
- Fixed-dose combination (FDC) therapy presents an alternative to sequential drug regimens.
- Existing FDC products are available for various chronic diseases.
- Shortcomings of FDC formulations were identified from multiple viewpoints.
Conclusions:
- Fixed-dose combination (FDC) therapy can improve adherence in polytherapy regimens.
- Further research is needed to address FDC formulation challenges and optimize drug delivery.
- Formulation scientists can leverage fundamental considerations for developing novel FDC products.
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