Supplement·Interactions·Reviewed June 9, 2026
Berberine HCl interactions.
Berberine HCl has 16 documented interactions in the NutriStack database: 1 to avoid or watch closely, 13 that need timing or caution, and 2 that work synergistically. The full list, with what each pairing does, is below.
Berberine HCl at a glance.
A quick, data-grounded summary. The full table is below.
Berberine HCl has 16 documented interactions in the NutriStack database: 1 to avoid or watch closely, 13 that need timing or caution, and 2 that work synergistically. The full list, with what each pairing does, is below.
Everything that interacts with berberine hcl.
Every supplement and medication in the NutriStack database with a documented interaction with this substance, highest-severity first. Open any pair for the mechanism and sources.
| Substance | Interaction | What happens |
|---|---|---|
| Cyclosporine/Tacrolimus | Contraindicated | Berberine inhibits CYP3A4 and P-glycoprotein, increasing cyclosporine AUC by 34.5% and prolonging half-life by 2.7 hours in renal transplant... |
| Chromium | Caution | Both lower blood glucose through different mechanisms. Combined use may cause excessive blood sugar reduction, especially in non-diabetics. details → |
| Coenzyme Q10 | Caution | Berberine HCl may inhibit mitochondrial Complex I, similar to metformin. CoQ10 supplementation may help offset potential mitochondrial effects. |
| Digoxin | Caution | Berberine inhibits P-glycoprotein, increasing digoxin bioavailability. Digoxin has a narrow therapeutic index. details → |
| Glimepiride | Caution | Berberine HCl can lower fasting glucose, post-meal glucose, and HbA1c in type 2 diabetes. Glimepiride forces pancreatic insulin release and can... details → |
| Glipizide | Caution | Berberine HCl lowers blood glucose independently of sulfonylurea therapy. Glipizide can cause hypoglycemia by increasing insulin release, so adding... details → |
| Glyburide | Caution | Berberine HCl has clinically measurable glucose-lowering activity. Glyburide is a sulfonylurea with a relatively high hypoglycemia risk, and the... details → |
| Insulin Aspart | Caution | Berberine HCl can lower glucose through AMPK-linked metabolic effects and may improve insulin sensitivity. Because insulin aspart is rapid-acting... details → |
| Insulin Glargine | Caution | Berberine HCl can lower glucose through AMPK-linked metabolic effects and may improve insulin sensitivity. Because insulin glargine provides basal... details → |
| Insulin Lispro | Caution | Berberine HCl can lower glucose through AMPK-linked metabolic effects and may improve insulin sensitivity. Because insulin lispro is rapid-acting... details → |
| Losartan | Caution | Berberine HCl can inhibit CYP2C9 activity and may alter losartan conversion to its active metabolite E-3174. Berberine HCl may also lower blood... details → |
| Metformin | Caution | Berberine HCl has independent glucose-lowering effects in type 2 diabetes. When combined with metformin, fasting glucose and A1c may fall more than... details → |
| Pramlintide | Caution | Berberine HCl can lower glucose through AMPK-linked metabolic effects and may improve insulin sensitivity. Pramlintide is used with mealtime insulin... details → |
| Warfarin | Caution | Berberine displaces warfarin from plasma protein binding sites and inhibits CYP2C9 (warfarin metabolism enzyme). May alter INR unpredictably. |
| Alpha-Lipoic Acid | Synergy | Both improve insulin sensitivity through AMPK activation. ALA also supports glucose uptake via GLUT4 translocation. |
| Milk Thistle | Synergy | Milk thistle (silymarin) inhibits CYP enzymes that metabolize berberine hcl, potentially increasing its bioavailability and duration of action. |
The full berberine hcl profile.
Benefits, dosing by goal, forms, and the cited evidence for this supplement.
Common berberine hcl questions.
Quick answers drawn from the table above.
What interacts with Berberine HCl?
In the NutriStack database, Berberine HCl has 16 documented interactions with other supplements and medications. The most notable include Cyclosporine/Tacrolimus, Chromium, Coenzyme Q10, Digoxin, and Glimepiride.
What should you not take with Berberine HCl?
Berberine HCl is flagged against 1 substance in the database, including Cyclosporine/Tacrolimus. Review these with a clinician before combining, especially alongside prescription medications.
What works well with Berberine HCl?
Berberine HCl pairs synergistically with Alpha-Lipoic Acid and Milk Thistle in the NutriStack database. Synergy still depends on dose and timing; open any pair for the detail.
Can you take Berberine HCl with Cyclosporine/Tacrolimus?
NutriStack classifies the Berberine HCl and Cyclosporine/Tacrolimus pairing as contraindicated: Berberine inhibits CYP3A4 and P-glycoprotein, increasing cyclosporine AUC by 34.5% and prolonging half-life by 2.7 hours in renal transplant recipients. Do NOT combine without transplant specialist supervision. May require immunosuppressant dose reduction.
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