How to choose a good berberine

A berberine label can hide more than it shows. "800 mg" might mean 800 mg of berberine, or 800 mg of an extract that's only 8% berberine — a tenfold difference in what you're actually getting. Here's a checklist for reading any berberine label, including ours, and where our own product lands on each point.

Form: HCl, phytosome, or plain extract

Most clinical research and most supplements use berberine hydrochloride (HCl), the same salt form used in Electric Tiger Berberine. Some brands sell a phytosome form, marketed for absorption; we don't carry that form and don't have a comparative absorption claim to make either way. Check which form a label lists, and be wary of a label that doesn't say.

Standardized amount, not just extract weight

This is the single most important line on a berberine label, and the easiest to misread. A number like "800 mg" is usually the weight of the extract, not the amount of berberine in it. Look for a standardization percentage (like "8%") or a milligram figure specifically for berberine — if neither appears, you can't tell how much active compound you're actually getting. Electric Tiger Berberine states both: 800 mg of extract, standardized to 8%, for about 73 mg of berberine per serving.

Dose versus the trials

Clinical trials on berberine have mostly used 900 mg to 1.5 g of berberine a day, with a pooled range as low as 300 mg a day at the bottom end. Compare a label's actual berberine amount — not its extract weight — against that range. Our 73 mg serving sits well under it; see how much berberine did the studies use for the dose used in each trial we found, and check any other label the same way before assuming it clears the bar.

Fillers and other ingredients

Check the "other ingredients" line for anything you're avoiding. Electric Tiger Berberine lists cellulose (vegetable capsule), microcrystalline cellulose, L-leucine and olive oil — no artificial fillers or listed allergens, and it's vegan, gluten-free, allergen-free and non-GMO. Not every brand discloses this as clearly; if a label doesn't list its capsule material or flow agents, that's worth asking about.

Price per serving

Divide the price by the number of servings, not the number of capsules, since serving sizes vary by brand. Electric Tiger Berberine is as low as $17.34 a bottle on subscription, 30 servings a bottle — about $0.58 a serving. Use that same math on any label you're comparing.

Third-party testing and a certificate of analysis

Ask any brand, including us, whether the product is third-party tested and whether a certificate of analysis confirming the actual berberine content is available. This SKU does not have one yet; we'll publish it here the day it does. A brand that can produce one for its specific batch is giving you more than a label claim.

Questions people ask

Is there a single best berberine supplement?

Not one we'd point to. The checklist above — form, standardized amount versus extract weight, dose versus the trials, fillers, price per serving, and testing — tells you more than a ranking would. Measure any label, including ours, against it.

Where should you buy berberine?

From a retailer or brand that discloses the standardized amount, the full ingredient list, and price per serving clearly enough that you can run the checklist above. You can see our own label at Electric Tiger Berberine.

What about berberine reviews?

We don't feature star ratings or testimonials on this page. They don't tell you the standardized amount or how a dose compares to the trials — the checklist above does.

Related reading: how much berberine should you take a day and what is berberine.