#8 in Herbal Supplements Third-Party Tested

Thorne Berberine 500mg (60 Capsules)

Name: Thorne Berberine 500mg (60 Capsules)
Brand: Thorne
Rating: 4.5 (4800 reviews)

by Thorne

"Pharmaceutical-grade berberine with NSF Certified for Sport — the cleanest berberine available"

Amazon Rating

4.5/5

Reviews

4,800+

Price Range

$28-34

Servings

60 servings

NSF Certified for SportcGMP

Our Editorial Rating

8.9

Very Good

FormCapsule

CategoryHerbal Supplements

SubcategoryBerberine (Blood Sugar, Metabolic Health)

View on Amazon

Overview

Thorne Berberine delivers 500mg of berberine HCl per capsule, manufactured to pharmaceutical-grade standards with NSF Certified for Sport verification. Berberine has emerged as one of the most evidence-backed natural compounds for blood sugar management, with meta-analyses showing effects comparable to metformin in some populations. Thorne's version stands out for purity — no unnecessary fillers, binders, or additives.

Key Ingredients

Ingredient	Amount
Berberine HCl	500 mg

Pros & Cons

What We Like

500mg clinical dose per capsule
NSF Certified for Sport — rare for berberine
Pharmaceutical-grade manufacturing
Clean formula, no fillers
Strong evidence base for blood sugar

What Could Be Better

Premium price vs budget options
60 capsules lasts 1-2 months
GI discomfort if not taken with food
Caution with diabetes medications

Who Is This For?

Best For

Blood sugar management
Metabolic health optimization
Athletes needing NSF-certified supplements
Those wanting pharmaceutical-grade purity

Not Ideal For

Budget supplement shoppers
Those on diabetes medications without MD guidance
Those with GI sensitivity

Our Verdict

8.9/10 — Very Good

The premium berberine choice. NSF Certified for Sport is extremely rare for berberine products, and Thorne's clean formulation with no fillers sets it apart from the crowded market.