NutriStack
Fenugreek and Semaglutide, a caution.
Fenugreek extracts lower fasting glucose and HbA1c in type 2 diabetes meta-analyses, and its soluble fiber slows gastric emptying. Semaglutide also slows gastric emptying and augments glucose-dependent insulin secretion. The combined GI slowing may worsen nausea, bloating, and early satiety, and the additive glucose-lowering can produce hypoglycemia when other agents (insulin, sulfonylureas) are on board.
One pair, every claim cited. The two substances, the type, the mechanism, the recommendation, and the primary literature.
Same shape as the other 1,729 pairs in the public database.
From the interaction database
What the row says.
Every entry follows the same shape: what is happening, the mechanism, the recommendation, and the primary literature.
At a glance
- Substances
- Fenugreek and Semaglutide
- Pair type
- Caution
- Evidence (highest tier)
- Emerging
- Source citations
- 2 sources
- Stack Score effect
- −5 to your Stack Score (per scored caution row).
- Scope
- Supplement × Prescription
- Last verified
- May 30, 2026
Caution · Emerging evidence
Caution
What is happening. Fenugreek extracts lower fasting glucose and HbA1c in type 2 diabetes meta-analyses, and its soluble fiber slows gastric emptying. Semaglutide also slows gastric emptying and augments glucose-dependent insulin secretion. The combined GI slowing may worsen nausea, bloating, and early satiety, and the additive glucose-lowering can produce hypoglycemia when other agents (insulin, sulfonylureas) are on board.
Mechanism. Fenugreek's galactomannan soluble fiber slows gastric emptying and carbohydrate absorption. Semaglutide activates GLP-1 receptors, slowing gastric emptying and augmenting glucose-dependent insulin release. The two compound the GI effects and the glucose-lowering.
Recommendation. Take fenugreek away from semaglutide doses if you experience increased nausea. Tell your prescriber before starting fenugreek, and monitor fasting glucose for the first 2-4 weeks. If you also take insulin or a sulfonylurea, ask whether those need to be reduced.
Sources (2)
- Gong J, Fang K, Dong H, Wang D, Hu M, Lu F. Effect of fenugreek on hyperglycaemia and hyperlipidemia in diabetes and prediabetes: A meta-analysis. J Ethnopharmacol. 2016;194:260-268. PMID 27496582
- Jalleh RJ, Rayner CK, Hausken T, et al. Gastrointestinal effects of GLP-1 receptor agonists: mechanisms, management, and future directions. Lancet Gastroenterol Hepatol. 2024;9(10):957-964. PMID 39096914
Stack Score
How this pair moves the number.
Effect on the composite score
If both Fenugreek and Semaglutide are in the same stack, this pair applies −5 to your Stack Score (per scored caution row).
The full algorithm, the clamping rules, and four worked stacks are documented at /methodology/stack-score.
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