Berberine HCl
Also known as: berberine hydrochloride, berberine, Berberis extract, dihydroberberine precursor
An isoquinoline alkaloid isolated from plants such as barberry, goldenseal, and Coptis, supplied as the hydrochloride salt. It is one of the most-studied botanical compounds for glucose and lipid metabolism; meta-analyses of randomized trials in people with type 2 diabetes report meaningful reductions in fasting glucose, HbA1c, and LDL cholesterol. It has become a core ingredient of blood-sugar and metabolic-health formulas, but its drug-interaction profile deserves attention.
Research summary
Berberine activates AMP-activated protein kinase, improves insulin sensitivity, and increases LDL receptor expression; it also alters gut microbiota composition.
Dosage
Daily amounts, of compound.
| Lowest studied | Typical range | Highest studied | Upper limit |
|---|---|---|---|
| — | 900–1,500 mg | 1,500 mg | — |
500 mg two to three times daily with meals, for a total of 900 to 1,500 mg per day. Splitting doses reduces GI upset and matches its short half-life. Constipation and cramping are the most common complaints. Metabolic effects are typically measured after 8 to 12 weeks.
Standardization: ≥97% berberine HCl
Source material: Berberis or Coptis root/bark extract, purified
Format suitability
- Capsule
- Powder
- Tablet
- Softgel
- Gummy
- Liquid
Very bitter and bright yellow; capsules or tablets only in practice. Doses drive high capsule counts.
Formulation notes
Inhibits CYP3A4, CYP2D6, and P-glycoprotein and can add to the effect of glucose-lowering drugs; flag on labels. Often paired with chromium, cinnamon, or alpha-lipoic acid.
- Notable drug interactions
- Not for pregnancy
Sources
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