Nutricost TUDCA 500 mg Review
#4 of 11 · 500 mg in One Capsule✓ Label verified · Supplement Facts read Oct 18, 2026Real retailer photo, cut out. Label unedited.
Consider it. A reasonable one-capsule way to take 500 mg of TUDCA at about 87 cents a serving. The panel is clean and short. The testing is brand-stated: no lab is named and we found no NSF listing. Choose it for convenience, or step up to the best-tested pick if proof matters most.
~$25.95~$0.87 per 500 mg capsule (one serving)
Why It Scores 7.6 — And The Label Line Behind Each Number
Third-Party Testing & Purity
30% of scoreThe bottle prints Third Party Tested and a GMP Compliant Facility seal; the Amazon listing adds independent ISO-accredited laboratories. No lab is named, nutricost.com links no certificate of analysis, and neither NSF Certified for Sport, NSF/ANSI 173 nor the NSF GMP registration list shows a Nutricost entry (searched October 18, 2026). That is brand-stated testing, the same level as BulkSupplements (7.0). Nutricost TUDCA 250 mg scores 7.4 on the same brand wording; here it is scored as written, because we searched and found nothing to check. Huge Supplements (7.8) lets you scan a batch report, and Double Wood (8.8) and BodyBio (9.2) document their testing in more depth.
- Testing
- Third Party Tested printed on the bottle; no lab named; no certificate of analysis on nutricost.com; no Nutricost product in the NSF Certified for Sport, NSF/ANSI 173 or NSF GMP listings (checked October 18, 2026)
- Certifications
- None verified. Printed seals: Third Party Tested, GMP Compliant Facility, Non-GMO Product, Nutricost Quality Guaranteed. No NSF, USP or Informed mark.
Form & Bioavailability
20% of scoreA single-ingredient TUDCA capsule with no blend and no stacked extras: rice flour, magnesium stearate, silica and calcium silicate in a gelatin capsule. The panel declares no source for the TUDCA and no assay figure, so there is no form claim to reward or penalize beyond that. It matches Nutricost TUDCA 250 mg and Huge Supplements (both 7.5), and sits above BulkSupplements (7.0) and Best Naturals (6.0).
- Form
- TUDCA (tauroursodeoxycholic acid), single ingredient, gelatin capsule
- Other ingredients
- Gelatin capsule, rice flour, magnesium stearate (vegetable source), silica, calcium silicate
Dose vs Functional Range
20% of score500 mg per serving is the top of the 250-500 mg range this list benchmarks against, and it arrives in one capsule. That scores above Huge Supplements at 300 mg (7.5) and Nutricost 250 mg (7.3). It stops just short of Double Wood (8.5), whose two-capsule 500 mg serving can also be run as 250 mg for a gentler start; this bottle has one fixed strength. NatureBell, which reaches 500 mg only in a three-capsule serving with ox bile, scores 8.0.
- Per serving
- 500 mg TUDCA per capsule. Daily Value not established
- Suggested use
- 1 capsule daily with 8-12 oz of water, or as directed by a healthcare professional (back label)
Tolerability & Safety
15% of scoreA single active, no stimulants, no herbs. The usual bile-acid effects apply: some people get loose stools or stomach upset, and the back label advises checking with a healthcare professional if you are pregnant, nursing, taking medication or have a medical condition. The whole 500 mg arrives in one capsule with no lower step, which is why this scores below Nutricost 250 mg and Double Wood (8.0 each) and level with Huge Supplements and BulkSupplements (7.5 each).
Value
15% of score$25.95 for 30 capsules on October 18, 2026 is about $0.87 per capsule, and one capsule is one 500 mg serving. That is close to the cost of 500 mg from the Nutricost 250 mg bottle (about $0.83 for two capsules, 8.3) and below Double Wood (about $1.00 per 500 mg, 8.0). It is below BulkSupplements (about $0.94 for two capsules, 6.5), and here you take one capsule instead of two. Price only breaks ties on this list, and the testing gap keeps this at 8.0 rather than higher.
- Servings
- 30 capsules = 30 servings per bottle
- Price
- $25.95 for 30 capsules = $0.87 per capsule = $0.87 per 500 mg serving (Amazon US, October 18, 2026); Subscribe & Save $23.35
- More Specs
- Manufacturer
- Nutricost, Vineyard, UT; made and quality tested in the USA with globally sourced ingredients
Label verified. Every figure read from the Supplement Facts photo, Oct 18, 2026.
Marketing Claims Vs. Reality
500 mg of TUDCA per serving, one capsule.
The panel lists TUDCA (tauroursodeoxycholic acid) 500 mg per serving, serving size 1 capsule, 30 servings per container. The front label and the back label say the same.
Third Party Tested; tested by independent ISO-accredited laboratories (listing).
Third Party Tested is printed on the bottle, and nutricost.com repeats it with the ISO wording. No lab is named, no certificate is linked, and we found no Nutricost product in the NSF Certified for Sport brand list or the NSF/ANSI 173 listings (searched October 18, 2026).
Manufactured in an NSF Certified, GMP Compliant, FDA Registered facility (Amazon bullet).
The bottle prints GMP Compliant Facility only, and nutricost.com says GMP Compliant and FDA Registered with no NSF mention. The NSF GMP registration search found no company named Nutricost on October 18, 2026. A contract manufacturer could be registered under its own name, but the listing does not name one.
Non-GMO, gluten-free and soy-free (listing).
The bottle prints a daggered Non-GMO Product seal. Gluten-Free appears on an Amazon marketing tile and Soy Free only in the listing bullet, and neither is printed on the bottle frames. No certifier mark, such as the Non-GMO Project, is shown.
500 mg a day supports liver and bile-flow health.
500 mg sits at the top of the 250-500 mg range used in cholestasis work, and UDCA and TUDCA are established in pharmaceutical cholestasis care (PMID 16741551), but rigorous human outcome trials for over-the-counter TUDCA in healthy livers are lacking.
What Our Test Actually Found
One capsule here is two capsules of the 250 mg bottle
The 250 mg Nutricost bottle needs two capsules to reach 500 mg; this one needs one. The other ingredients on the two panels match. The trade-off is flexibility: with 250 mg capsules you can start at one and move up, while this bottle only comes in one strength.
Testing: printed, not proven
Third Party Tested appears on the bottle, and the listing and nutricost.com add independent ISO-accredited laboratories. Neither names a lab or links a certificate. We searched NSF Certified for Sport, NSF/ANSI 173 and the NSF GMP registration list on October 18, 2026 and found no Nutricost entry. The Amazon bullet's NSF Certified wording is not on the bottle. Absence from a list is not proof of failed testing; it means there is nothing for us to check.
A short label, with a gelatin shell
The only active is TUDCA. The other ingredients are a gelatin capsule, rice flour, magnesium stearate (vegetable source), silica and calcium silicate. There is no blend, no herb and no sweetener. The gelatin capsule is animal-derived, so this is not a vegetarian product. The panel declares no source for the TUDCA itself.
Priced like the 250 mg bottle, per dose
At $25.95 for 30 capsules the cost per 500 mg is about $0.87, within a few cents of taking two capsules from the Nutricost 250 mg bottle. You pay for the convenience of one capsule instead of two, and for a smaller bottle: 30 servings here against 60 capsules there.
Full analysis: all pros & cons (8), buy if / skip if
- 500 mg of TUDCA in a single capsule
- About $0.87 per 500 mg serving on Amazon
- Short single-ingredient label with no blend or stimulants
- Non-GMO Product and GMP Compliant Facility seals printed on the bottle
- No lab named, no certificate, and no NSF listing found
- One fixed strength: no lower step than 500 mg
- Gelatin capsule, so not vegetarian
- The panel declares no source or assay for the TUDCA
- You want 500 mg of TUDCA in one capsule instead of two
- You want a short label: TUDCA in a gelatin capsule with plain excipients
- You accept brand-stated testing at a mainstream price
- You want a named lab or a certifier listing behind the testing claim; this bottle has neither
- You want to start at 250 mg: this strength has no lower step
- You avoid gelatin: the capsule shell is gelatin
- You have a liver or bile-duct condition: talk to your doctor before choosing a supplement
A short, plain label: 500 mg of TUDCA per capsule, 30 servings, and nothing stacked on top. About $0.87 a serving, close to what two capsules of the Nutricost 250 mg bottle cost. The trade-off is the same as for the rest of the brand's TUDCA: the bottle says Third Party Tested and names no lab, and we could find no NSF listing to check it against. The strongest testing documentation on this list sits with Double Wood, which scores higher.
Nutricost TUDCA 500 mg is one ingredient in a gelatin capsule. The Supplement Facts panel lists a single line: TUDCA (tauroursodeoxycholic acid) 500 mg per serving, one capsule, 30 servings per bottle. That puts the full top of the 250-500 mg range this list scores against into a single capsule, where the Nutricost 250 mg bottle needs two. The Amazon offer we checked on October 18, 2026 was $25.95, or about $0.87 per serving. The bottle prints Third Party Tested and GMP Compliant Facility, but it names no lab, and we found no Nutricost product in the NSF Certified for Sport, NSF/ANSI 173 or NSF GMP listings. It is a convenient, fairly priced 500 mg, held back by testing we could not check.
A convenient 500 mg, with testing you cannot check.
Nutricost TUDCA 500 mg does what the front says: 500 mg of TUDCA in one capsule, on a short label, for about 87 cents a serving. For someone who has already decided to take TUDCA at the top of the range, it is a simple and fairly priced way to do it. What holds the score at 7.6 is the testing. The bottle says Third Party Tested and the listing says ISO-accredited laboratories, but no lab is named, there is no certificate to read, and we found no Nutricost entry at NSF. That puts it level with BulkSupplements on testing and behind Double Wood, which documents its testing in more depth and scores higher overall. If proof of what is in the capsule matters most, buy Double Wood. If you want the lowest-risk way to start, the Nutricost 250 mg bottle lets you begin at half the dose. Keep expectations calibrated either way: the evidence supports the mechanism and prescription use, not a guaranteed benefit from an over-the-counter capsule.
If This Doesn’t Fit — Try These
Double Wood TUDCA Bile Salts
500 mg per two-capsule serving and the strongest testing documentation we found on this list, for a little more per serving.
Nutricost TUDCA 250mg
The same brand at 250 mg per capsule, so you can start at half the dose or take two capsules for 500 mg at about the same cost.
Quick Answers
Is Nutricost TUDCA 500 mg the same as the Nutricost TUDCA 250 mg bottle?
No. The 250 mg bottle has 250 mg of TUDCA per capsule and 60 capsules. This bottle has 500 mg per capsule and 30 capsules. The other ingredients on the two panels match, but the strength and the count differ, so we review them separately. One capsule here equals two capsules of the 250 mg bottle.
How much TUDCA is in one Nutricost TUDCA 500 mg capsule?
The Supplement Facts panel prints a serving size of 1 capsule and 30 servings per container, with TUDCA (tauroursodeoxycholic acid) 500 mg per serving and no Daily Value established. The back label suggests 1 capsule daily with 8-12 oz of water, or as directed by your healthcare professional.
Is 500 mg the right amount of TUDCA?
500 mg sits at the top of the 250-500 mg range this list scores against. There is no established over-the-counter dose for healthy-liver support; that range is extrapolated from cholestasis studies. This product has one fixed strength, so you cannot step down to 250 mg the way you can with a 250 mg capsule. Check with your doctor first if you take medication or have a liver or bile-duct condition.
Is Nutricost TUDCA third-party tested?
The bottle prints Third Party Tested, and the Amazon listing adds independent ISO-accredited laboratories. Neither names a lab, and nutricost.com links no certificate of analysis. We searched the NSF Certified for Sport brand list, the NSF/ANSI 173 listings and the NSF GMP registration list on October 18, 2026 and found no Nutricost entry in any of them. So the claim is plausible, but we could not verify it at a certifier.
Is the capsule vegetarian?
No. The panel lists a gelatin capsule, which is animal-derived. The magnesium stearate is marked vegetable source, but the capsule shell is gelatin.
What does it cost per serving?
The Amazon buy-box offer we checked on October 18, 2026 was $25.95 for 30 capsules. One capsule is one 500 mg serving, so that is about $0.87 per serving. The Subscribe & Save offer was $23.35, about $0.78 a capsule.
Sources & Further Reading
2 peer-reviewed sources, each linked to PubMed
- [1] Vang S, et al. The unexpected uses of urso- and tauroursodeoxycholic acid in the treatment of non-liver diseases. Glob Adv Health Med. 2014;3(3):58-69. PMID 24891994 — The unexpected uses of urso- and tauroursodeoxycholic acid in the treatment of non-liver diseases. Summarizes TUDCA's cytoprotective mechanisms, the rationale for liver-support use absent large OTC outcome trials.
- [2] Beuers U. Drug insight: mechanisms and sites of action of ursodeoxycholic acid in cholestasis. Nat Clin Pract Gastroenterol Hepatol. 2006;3(6):318-328. PMID 16741551 — Drug insight: mechanisms and sites of action of ursodeoxycholic acid in cholestasis. Establishes the anticholestatic, cytoprotective and anti-apoptotic mechanisms of UDCA/TUDCA that underpin their pharma use in cholestatic liver disease.
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