Interaction databaseSupplement × PrescriptionReviewed May 2026

Alpha-Lipoic Acid and Glimepiride, a caution.

Alpha-lipoic acid improves insulin sensitivity and lowers fasting glucose in type 2 diabetes meta-analyses. It has also been associated with insulin autoimmune syndrome (Hirata syndrome), producing severe spontaneous hypoglycemia. Glimepiride forces pancreatic insulin release. The additive effect can produce symptomatic lows, especially in older adults or with missed meals.

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Substances
Alpha-Lipoic Acid and Glimepiride
Pair type
Caution
Evidence (highest tier)
Moderate
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 · Moderate evidence

Caution

What is happening. Alpha-lipoic acid improves insulin sensitivity and lowers fasting glucose in type 2 diabetes meta-analyses. It has also been associated with insulin autoimmune syndrome (Hirata syndrome), producing severe spontaneous hypoglycemia. Glimepiride forces pancreatic insulin release. The additive effect can produce symptomatic lows, especially in older adults or with missed meals.

Mechanism. ALA enhances insulin-stimulated GLUT4 translocation and AMPK activity in skeletal muscle. Its sulfhydryl groups can trigger insulin autoantibody formation in genetically susceptible individuals. Glimepiride binds beta-cell K-ATP channels (SUR1/Kir6.2) and forces insulin secretion. The two effects on glucose-lowering are additive.

Recommendation. If you take glimepiride, do not start ALA without telling your prescriber. Monitor fingerstick glucose more often (before meals and at bedtime) during the first 4 weeks and seek urgent care for repeated unexplained hypoglycemia.

Sources (2)
  1. Akbari M, Ostadmohammadi V, Lankarani KB, et al. The effects of alpha-lipoic acid supplementation on glucose control and lipid profiles among patients with metabolic diseases: A systematic review and meta-analysis of randomized controlled trials. Metabolism. 2018;87:56-69. PMID 29990473
  2. Izzo V, Greco C, Corradini D, et al. Insulin autoimmune syndrome in an Argentine woman taking alpha-lipoic acid: A case report and review of the literature. SAGE Open Med Case Rep. 2018;6:2050313X18819601. PMID 30627435

Stack Score

How this pair moves the number.

Effect on the composite score

If both Alpha-Lipoic Acid and Glimepiride 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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