What kind of interaction is it?

Caution: an interaction that may reduce efficacy or raise side-effect risk and warrants monitoring.

Is this interaction backed by published research?

Yes. NutriStack lists 1 citation row for the Berberine + Pterostilbene pair, each linking to PubMed by PMID where available. Full sourcing methodology at https://nutristackapp.com/methodology/interactions.

Supplement × Supplement·a caution·Emerging evidence

Berberine + Pterostilbene

Q: Can I take Berberine and Pterostilbene together?

Possibly, but with caution. Berberine and Pterostilbene have a documented caution-tier interaction. Both pterostilbene and berberine activate AMPK and can lower blood glucose. Used together, and especially alongside antidiabetic medication, they may produce additive glucose-lowering effects.

Q: How does this affect a NutriStack Stack Score?

-5 to your Stack Score per scored caution row.

Caution Emerging evidence

Both pterostilbene and berberine activate AMPK and can lower blood glucose. Used together, and especially alongside antidiabetic medication, they may produce additive glucose-lowering effects.

Supplement × Supplement

Open the interaction checker → Read the methodology

From the database

What the row says.

Every entry follows the same shape: what is happening, the mechanism, and the recommendation.

Substances

Berberine and Pterostilbene

Pair type

Caution

Evidence

Emerging

Source citations

Scope

Supplement × Supplement

Last verified

June 4, 2026

CautionEmerging evidence

What is happening. Both pterostilbene and berberine activate AMPK and can lower blood glucose. Used together, and especially alongside antidiabetic medication, they may produce additive glucose-lowering effects.

Mechanism. Both compounds activate AMP-activated protein kinase and improve insulin sensitivity through overlapping metabolic pathways, which can compound glucose-lowering effects.

Recommendation. Monitor blood glucose if combining these, particularly in people taking insulin or oral hypoglycemics. Watch for signs of hypoglycemia and adjust under clinical guidance.

Stack Score

How it moves the number.

Effect on the composite score

If both Berberine and Pterostilbene 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 at /methodology/stack-score.

Sources

Sources, by evidence tier.

Every claim on this page is cited. PMIDs link straight to PubMed.

Reference material

1Yan HM, et al. Efficacy of berberine in patients with non-alcoholic fatty liver disease. PLoS One. 2015.Needs sourceNo link

Check your full routine

One pair was the worked example.

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Open the interaction checker → Browse the research index