NSTK · 01.2026Independent supplement reference
NutriStack
Edition 1.0Updated August 1, 2026

Supplement × Prescription·Evidence index

Fenugreek and Metformin: what the published research says

PubMed indexes 8 records that name Fenugreek and Metformin together, either in the title or in an interaction, co-administration, or pharmacokinetic context. Each one is listed below with its study design and, where the abstract states one, the authors’ own conclusion, quoted and linked. This page reports that literature. It does not tell you whether to combine them.

Read this first

An evidence index, not guidance.

Every statement below is attributed to a named, dated, linked source.

This page lists published research relevant to Fenugreek and Metformin. It deliberately does not state whether the combination is safe, whether it interacts, in which direction, at what dose, or how far apart to take them.

The research

8 studies naming Fenugreek and Metformin.

Strongest relevance first: papers naming both substances in the title, then human trials and systematic reviews.

Trigonella foenum-graecum Seed Extract, 4-Hydroxyisoleucine, and Metformin Stimulate Proximal Insulin Signaling and Increase Expression of Glycogenic Enzymes and GLUT2 in HepG2 Cells.

Metabolic syndrome and related disorders · 2016 · PMID 26835874

Comparative StudyHuman subjects

“Collectively, these findings provide a mechanism by which FSE exerts antihyperglycemic effects similar to metformin and insulin that occurs via enhanced insulin signaling, gene expression, and increasing glucose uptake.”

Naicker et al. · Authors' conclusion

Names both Fenugreek and Metformin in its title.

Gene Expression of Cyp7a1 in Liver Tissue of Type 2 Diabetic Rats Treated with Fenugreek and/or Metformin.

International journal of applied & basic medical research · 2025 · PMID 40336768

“This study has found that the administration of MET and TFG in combination may have an undesirable pharmacological interaction on blood glucose levels and BA synthesis. This information becomes critical for people who wish to take MET with TFG for ostensible better glucose management. It is advisable to avoid combining them.”

Garg et al. · Authors' conclusion

Names both Fenugreek and Metformin in its title.

Comparison of the Effect of Fenugreek and Metformin on Clinical and Metabolic Status of Cases with Polycystic Ovary Syndrome: A Randomized Trial.

Journal of reproduction & infertility · 2024 · PMID 39157801

“Fenugreek cannot substitute metformin in PCOS treatment. However, regarding its lipid-lowering ability and low frequency of adverse effects, it can be used as an adjuvant treatment in PCOS, especially in PCOS patients with hyper-lipidemia and severe hair loss.”

Mirgaloybayat et al. · Authors' conclusion

Names both Fenugreek and Metformin in its title.

Trigonella foenum-graecum L. seed mucilage-gellan mucoadhesive beads for controlled release of metformin HCl.

Carbohydrate polymers · 2014 · PMID 24702915

Animal study

“The in vitro metformin HCl release from these ionotropically-gelled FSM-GG beads was prolonged over 10h and followed zero-order model with super case-II transport mechanism. The optimized mucoadhesive beads also exhibited pH-dependent swelling, good mucoadhesivity with biological mucosal membrane and significant hypoglycemic effect in alloxan-induced diabetic rats over prolonged period after oral administration.”

Nayak et al. · From the abstract

Names both Fenugreek and Metformin in its title.

Fenugreek seed mucilage-alginate mucoadhesive beads of metformin HCl: Design, optimization and evaluation.

International journal of biological macromolecules · 2013 · PMID 23246901

Animal study

“These beads also exhibited good mucoadhesivity in wash-off test. The optimized FSM-alginate mucoadhesive beads containing metformin HCl showed significant hypoglycemic effect in alloxan-induced diabetic rats over prolonged period after oral administration.”

Nayak et al. · From the abstract

Names both Fenugreek and Metformin in its title.

A Placebo-Controlled, Double-Blind Clinical Investigation to Evaluate the Efficacy of a Patented Trigonella foenum-graecum Seed Extract "Fenfuro®" in Type 2 Diabetics.

Journal of the American Nutrition Association · 2024 · PMID 37459747

Randomized Controlled Trial204 participants

“The study demonstrated the promising potential of this novel phytotherapeutic, Fenfuro®, in long-term holistic management of type-2 diabetes.”

Hota et al. · Authors' conclusion

Names Fenugreek and Metformin together in an interaction, co-administration, or pharmacokinetic context.

Limitations

What this evidence cannot tell you.

Search-based evidence indexes have real limits, and it is worth being explicit about them:

NutriStack

Track what you actually take.

NutriStack is a free iPhone app for organising a supplement routine: what you take, when, and what the published record says about it. Its exploratory interaction checker covers Fenugreek, Metformin, and several hundred other substances.

The checker is a research and organisation tool, not a clinical decision aid, and its per-pair assessments are excluded from search until they pass claim-level review.

NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.