Metformin brand names and formulations
Pro Research Analysisby 
Searched over 200M research papers
Metformin Brand Names and Marketed Formulations
Common Brand Names and Global Availability
Metformin is widely available under various brand names and generic formulations across different countries. Some of the commonly reported brand names include Metformin, Glymet, Metformin (STADA), Metforal, Dialon, Glumetza, and Okamet, among others. These brands are found in markets such as Libya, India, Mexico, Trinidad & Tobago, Ethiopia, and Syria, reflecting the global reach and widespread use of metformin for type 2 diabetes management Akasha2019J.2024Gupta2016+4 MORE.
Dosage Forms and Strengths
Metformin is most commonly formulated as oral tablets, with standard strengths being 500 mg and 850 mg. These tablets are typically immediate-release, but extended-release (ER) formulations are also available to provide prolonged drug action and potentially improve gastrointestinal tolerability Akasha2019Zhou2020Mansour2016. Pediatric liquid formulations can be prepared extemporaneously by dissolving tablets in water with sweeteners, addressing the lack of commercially available pediatric options .
Quality and Bioequivalence of Branded and Generic Metformin
Multiple studies have compared the quality, safety, and efficacy of branded and generic metformin tablets. Across different markets, both branded and generic formulations generally meet official pharmacopeial standards for weight variation, friability, hardness, disintegration, dissolution, and drug content Akasha2019Gupta2016Jain2019+4 MORE. Pharmacokinetic and clinical studies show that generic and branded metformin are bioequivalent, with similar effects on glycemic control, lipid profiles, and safety parameters such as renal function J.2024Montoya-Eguía2015Zhou2020.
Differences in Excipients and Formulation Properties
While the active ingredient is consistent, differences in excipients between branded and generic products can affect certain tablet properties. Some studies have found that generic tablets may have longer disintegration times, slower drug release, or differences in physical characteristics such as hardness and crystallinity, potentially due to the use of different excipients or manufacturing processes Alemu2024Mansour2016Arafat2023. However, these differences generally do not impact the overall clinical efficacy or safety of the formulations J.2024Jain2019Zhou2020.
Pediatric and Extemporaneous Formulations
For pediatric use, extemporaneous liquid formulations can be prepared from both branded and generic tablets. These solutions remain stable for up to 30 days and are well tolerated when sweetened with agents like sucralose or stevia, providing a practical option for children or patients with swallowing difficulties .
Conclusion
Metformin is available globally in a variety of branded and generic formulations, most commonly as 500 mg and 850 mg oral tablets, with both immediate-release and extended-release options. Studies consistently show that these formulations, regardless of brand, meet quality standards and are clinically interchangeable. Differences in excipients may affect some physical properties, but not the overall efficacy or safety. Pediatric liquid formulations can be safely prepared from existing tablets, expanding metformin’s accessibility to all patient groups.
Sources and full results
Most relevant research papers on this topic