Last updated: · Originally published September 5, 2026 · Published by Eternal Elixir
Search for a Dr. Berg review and you land in an argument about credentials rather than a buying decision. This one takes a different route.
It starts from the live Dr. Berg Nutritionals catalog — 110 products as listed on the brand’s own store — and asks the narrower question that actually matters if you are assembling a longevity stack: what does the range cover, what does it not cover at all, and on the two ingredients where it overlaps with a specialist brand like Eternal Elixir, what does a milligram of the labeled active genuinely cost? Every price, dose and capsule count below was read from each brand’s live product pages on September 5, 2026.
Key takeaways
This Dr. Berg review finds a broad, competitively priced foundational range — electrolytes, fat-soluble vitamins, minerals, digestive and gallbladder support — with real depth in the keto and fasting categories.
The catalog contains no NMN, nicotinamide riboside, resveratrol, spermidine, Ca-AKG or pterostilbene. The NAD+ and longevity category is absent entirely.
Only two ingredients overlap with Eternal Elixir.
Normalized per 500 mg of labeled active, TUDCA costs $1.60 at Dr. Berg versus $1.00 at Eternal Elixir.
Berberine costs $0.58 versus $0.56.
Both brands ship across the United States. Eternal Elixir adds free shipping over $100 and runs longer bottles on both overlapping products.
What This Dr. Berg Review Covers, and Who Dr. Berg Is
Eric Berg is a licensed chiropractor — the letters after his name are DC, Doctor of Chiropractic, not MD He is also one of the largest health educators on the internet, with a YouTube channel carrying roughly 15 million subscribers and more than 6,000 videos, most of them on keto eating, intermittent fasting and everyday nutrition.
Dr. Berg Nutritionals is the supplement line attached to that audience, manufactured in the United States in a facility the brand describes as cGMP.
That combination explains both the enthusiasm and the criticism you will find on the first page of Google. The audience is enormous and loyal; clinicians and science communicators have publicly pushed back on parts of the nutrition content. Neither of those is the subject here. A supplement range has to be judged on what is in the bottle, what it costs per milligram, and whether it covers the categories you are actually shopping for.
That is the lens used throughout. If you want to see how the same test applies to a clinician-facing mainstream brand, our breakdown of Thorne’s pricing and dose sizes runs the identical comparison. And if you are starting from the category rather than the brand, our ranked guide to the best longevity supplements is the wider map this review sits inside.
The Catalog Map: 110 Products, and the Category That Is Missing
This is the part no other page on this search result covers. Fact-check articles interrogate the claims; marketplace listings show individual products; nobody maps what the range as a whole does and does not include. Here is that map, taken from the live store.
What the Dr. Berg Range Actually Covers
The catalog is unusually strong on foundational nutrition, and the pricing is genuinely competitive:
Electrolytes and hydration — the deepest category in the range. Electrolyte Powder with 1,000 mg of potassium at $35.99, electrolyte capsules (160 vegetable capsules) at $24.99, plus multi-flavor bundles.
Fat-soluble vitamins — D3 & K2 Vitamin at $34.99 and a D3/K2 liquid in MCT oil at $17.99.
Minerals — Magnesium Glycinate with vitamin D3 at $18.99 and zinc with magnesium, D3 and selenium at $19.99.
Sea Kelp Enhanced Iodine is $32.99 and Trace Minerals Enhanced is $36.99.
Digestive and gallbladder support — Gallbladder Formula Extra Strength (90 capsules) at $36.99 and Advanced Digestive Enzymes (180 capsules) at $25.99. This is a category most supplement brands ignore, and the depth here is real.
Single-herb basics — Ashwagandha with BioPerine at $18.99 and Turmeric Curcumin with BioPerine at $17.99, both priced below much of the market.
Whole-food powders and lifestyle products — nutritional yeast, organic wheatgrass, beetroot juice powder, grain-free crackers, keto meal plans, books and coaching.
If your shopping list is a daily multivitamin, electrolytes, magnesium and something for digestion, this range covers it at a fair price, and the bundles make it cheaper still.
The NAD+ and Longevity Gap
Now the absence. Searching the full 110-product catalog returns no NMN, no nicotinamide riboside, no trans-resveratrol, no pterostilbene, no spermidine, no Ca-AKG, no standalone glutathione, no shilajit, no tongkat ali, no turkesterone and no methylene blue. The entire NAD+ and cellular-aging shelf is missing.
The nearest thing to it is Niacin (flushing form) at $16.99, a classic vitamin B3. That is worth being precise about: niacin genuinely is an NAD+ precursor, and it is the cheapest one on the market. It is not, however, one of the newer precursors that longevity buyers are usually searching for, and the brand does not market it that way.
If the NAD+ category is the reason you are shopping at all, our comparison of NAD+ boosters covers what that shelf actually looks like, and Eternal Elixir’s own NMN 500mg capsules sit at $49.99 for 90 capsules.
The same applies to shilajit: Eternal Elixir’s Shilajit 1000mg is a direct fill for that specific gap.
Comparing berberine in the US? Eternal Elixir’s Berberine HCl 500mg (20:1 Extract) ships fast across the United States with 90 capsules per bottle at 500 mg of berberine HCl each. Browse the longevity range →
Cost Per 500 mg: The Two Ingredients Where the Ranges Overlap
Out of 110 Dr. Berg products and 20 Eternal Elixir products, exactly two ingredients appear on both sides: TUDCA and berberine. That makes them the only honest place to compare price, because everything else is a different product doing a different job. The unit used throughout is cost per 500 mg of the labeled active — not cost per capsule, which flatters whichever brand puts less in each one.
TUDCA: 250 mg Versus 500 mg Per Capsule
Dr. Berg’s TUDCA delivers 250 mg of tauroursodeoxycholic acid per capsule, 30 vegetable capsules per bottle, one capsule per serving, at $23.99 (list price $28.79).
That works out to $0.80 per serving, or $1.60 per 500 mg of TUDCA, and the bottle lasts 30 days at one capsule daily.
Eternal Elixir’s TUDCA 500mg capsules carry 500 mg per capsule, 60 capsules and 60 label servings per bottle, one capsule per serving, at $59.99.
That is $1.00 per serving and $1.00 per 500 mg — a 60-day bottle at the same daily capsule count.
The headline number favors Dr. Berg; the milligram math does not. You pay less at checkout and more per unit of the actual compound. If TUDCA is the ingredient you came for, our ranked TUDCA comparison puts both of these against the rest of the US market on the same normalized basis.
Berberine: A 600 mg Formula Versus a 500 mg Isolate
Dr. Berg Berberine with Ceylon Cinnamon is 60 capsules at $41.99 (list $50.81).
Each capsule carries 600 mg of berberine hydrochloride from Berberis aristata bark extract, alongside 12.5 mg of magnesium as magnesium glycinate, Ceylon cinnamon and BioPerine. Suggested use is one capsule twice daily, so 1,200 mg per day and a 30-day bottle.
That is $0.70 per capsule and $0.58 per 500 mg of berberine.
Eternal Elixir’s Berberine HCl 500mg (20:1 extract) is 90 capsules and 90 label servings at $49.99, one capsule per serving, with nothing else in the capsule.
That is $0.5554 per serving, or $0.56 per 500 mg.
The per-milligram gap here is small — about four percent — and it would be dishonest to inflate it. The real decision is formula versus isolate. Dr. Berg’s capsule bundles cinnamon and a bioavailability enhancer into the same pill, which suits buyers who want one thing to take.
Eternal Elixir’s is a single active, which suits buyers stacking berberine alongside other compounds and wanting to control every variable. For the wider field, our berberine comparison normalizes the same way.
| Product | Active per capsule | Capsules per bottle | Price (USD) | Cost per 500 mg of active | Best for |
|---|---|---|---|---|---|
| Dr. Berg TUDCA | 250 mg TUDCA | 30 | $23.99 | $1.60 | Lowest checkout price for a short first trial |
| Eternal Elixir TUDCA 500mg | 500 mg TUDCA | 60 | $59.99 | $1.00 | Lowest cost per milligram and a 60-day bottle |
| Dr. Berg Berberine with Ceylon Cinnamon | 600 mg berberine HCl | 60 | $41.99 | $0.58 | Buyers wanting cinnamon and BioPerine in one capsule |
| Eternal Elixir Berberine HCl 500mg | 500 mg berberine HCl | 90 | $49.99 | $0.56 | Buyers stacking a single active with nothing added |
All rows normalized to cost per 500 mg of the labeled active compound.
Prices read from each brand’s live US product pages on September 5, 2026 and subject to change.
Testing, Bundles and What the Research Actually Supports
On quality signals, Dr. Berg product pages state non-GMO, gluten-free and lab tested, with manufacturing in a cGMP facility in the United States. What they do not display on the product listing is a per-batch third-party certificate of analysis. Eternal Elixir’s product pages carry lab tested, US-based and GMP certified markers.
Neither brand is publishing raw batch documents on the product page itself, which is worth knowing before treating any on-page testing badge as more than a manufacturing claim.
Bundles deserve a warning of their own. Dr. Berg leans hard on kits and packages.
Body-type packages run $149.90, a Complete Keto and Intermittent Fasting Kit is $324.00, and coach training is $645.00.
Bundles can be good value, but they also obscure per-unit cost. The discipline is the same one used in the table above: divide the bundle price by what you are actually getting of each active before deciding.
On the two overlapping compounds, the human research is real and worth citing precisely. A systematic review and meta-analysis published in Frontiers in Pharmacology in 2022 pooled randomized controlled trials in people with type 2 diabetes to examine berberine’s effect on blood glucose measures (PMID 36467075). For TUDCA, a double-blind randomized controlled trial published in the Journal of Huazhong University of Science and Technology. Medical Sciences in 2013 evaluated tauroursodeoxycholic acid in human patients with liver cirrhosis (PMID 23592128).
Both of those describe clinical research populations, not supplement outcomes, and neither makes any product here a treatment for anything. What they do establish is that these two compounds have been studied in humans rather than only in cell lines and rodents — which is more than can be said for a large share of what sits on supplement shelves. Studies suggest mechanisms; they do not license claims. The same standard is applied in our review of Momentous, where the dose-versus-marketing gap is the central question.
Dr. Berg Review Verdict: Which Buyer Should Choose What
Buy Dr. Berg if your shopping list is foundational: electrolytes, D3 and K2, magnesium, zinc, digestive enzymes or gallbladder support. The prices are keen, the category coverage is broad, and the gallbladder and digestion range is genuinely better developed than most competitors bother with.
It is also the cheaper way to sample TUDCA for a month if you have never taken it and do not want to commit $59.99 to finding out.
Look elsewhere if you are building a longevity or NAD+ stack. The category simply is not there, and no amount of niacin substitutes for it. Look elsewhere too if you want single-ingredient isolates you can dose independently, or if you are optimizing cost per milligram rather than cost per bottle — on TUDCA, that gap is 60 percent.
The honest summary is that Dr. Berg Nutritionals is a competent, well-priced generalist range attached to an enormous education audience, and Eternal Elixir is a specialist in exactly the shelf that range does not stock. Those are not competing answers to the same question.
They are answers to two different ones, and most buyers who read a Dr. Berg review carefully end up needing both kinds of product from different places.
Frequently Asked Questions
Is Dr. Berg a licensed doctor?
He is a licensed chiropractor. The credential after his name is DC, Doctor of Chiropractic, which is a licensed clinical qualification but not a medical degree.
He is not a physician, and he is widely described as a health educator rather than a practicing clinician. That distinction is the single most searched thing about him, and the brand does not obscure it.
What are Dr. Berg’s top 5 supplements?
The brand does not publish a ranking, so the honest answer is to look at which products it foregrounds across its own bundles and starter stacks.
Those are consistently the Electrolyte Powder with 1,000 mg of potassium ($35.99), D3 & K2 Vitamin ($34.99) and Magnesium Glycinate with vitamin D3 ($18.99).
The list also runs to the Whole Food Multivitamin with Minerals ($36.99) and Gallbladder Formula Extra Strength ($36.99). Those five appear in more kits than anything else in the catalog.
Is Dr. Berg third-party tested?
The product pages state non-GMO, gluten-free and lab tested, with manufacturing in a cGMP facility in the United States. They do not display a per-batch third-party certificate of analysis on the listing itself, so “lab tested” should be read as a manufacturing quality claim rather than published independent verification of every batch.
If per-batch documentation matters to you, ask any brand directly, including this one.
Is Dr. Berg a good brand of vitamins?
For foundational vitamins and minerals, yes — the doses are sensible, the prices sit at or below much of the market, and the range is broad. It is a weaker fit for anyone shopping the longevity shelf, because the catalog contains none of the NAD+ precursors, polyphenols or cellular-aging compounds that category is built on.
Judge it on what it stocks, not on the internet argument about its founder.
Other Supplement Brand Reviews Using the Same Cost-Per-Milligram Method
Dr. Berg is one of several large foundational ranges we have costed the same way. If you are cross-shopping, the closest comparisons are our NOW Foods review and its cost per active milligram, our Life Extension review of a research-led catalog, and our Solaray review of a legacy vitamin range.
For the value end of the same shelf, the Nutricost review of bulk-priced single ingredients covers the pricing model Dr. Berg competes against most directly on foundational vitamins and minerals.
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These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Brand names are used nominatively for identification and comparison only.
Dr. Berg and Dr. Berg Nutritionals are trademarks of their respective owners and are not affiliated with Eternal Elixir. All competitor prices and specifications were read from the brand’s live product pages on September 5, 2026 and can change without notice.
