PrimaForce TUDCA 500 mg Review
#5 of 11 · 500 mg in One Capsule✓ Label verified · Supplement Facts read Oct 18, 2026Real retailer photo, cut out. Label unedited.
Consider it. A good pick if you want the full 500 mg in one capsule. The panel is a clean single ingredient and the price works out to about $0.82 a serving. What holds it back is the testing: the front says Always Third Party Tested, names no lab, and no certifier lists the brand. It lands just under Nutricost for that reason.
$24.50~$0.82 per 500mg capsule
Why It Scores 7.5 — And The Label Line Behind Each Number
Third-Party Testing & Purity
30% of scoreThe front of the bottle prints Always Third Party Tested and names no lab. The Amazon listing and the brand page add an NSF certified facility, GMP and a third-party ISO accredited laboratory testing each batch, but none of that is printed on the bottle and no facility or lab is named. On October 18, 2026 we found PrimaForce on none of nsfsport.com, the Informed Sport list or the Informed Choice list, and primaforce.com has no COA page. The USP Verified site refused our request and the bottle carries no USP mark. Scored above Dr. Berg (6.0, a GMP-only baseline) and just under Nutricost (7.4) because the claim cannot be checked; well below Double Wood (8.8) and BodyBio (9.2), which have the highest testing scores on this list.
- Testing claim
- Front: Always Third Party Tested; no lab named
- Certifications
- None verified; not on nsfsport.com, Informed Sport or Informed Choice lists (Oct 18, 2026)
- Manufacturer
- Manufactured for PrimaForce, Vineyard, UT
Form & Bioavailability
20% of scoreA single ingredient, TUDCA at 500 mg per capsule, in a gelatin capsule with rice flour, magnesium stearate from a vegetable source, silica and calcium silicate. There is no blend and no added stack. The panel declares no source for the TUDCA and no purity percentage, so we cannot confirm whether it is synthesized or animal-derived. The other-ingredients list is the same five items printed on the Nutricost 250 mg panel. Nutricost and Huge Supplements score 7.5 here; this scores 7.0, level with BulkSupplements, because the form is clean but the source is undeclared.
- Active form
- TUDCA (tauroursodeoxycholic acid), single ingredient
- TUDCA source
- The panel declares no source and no purity percentage
- Capsule and other ingredients
- Gelatin capsule, rice flour, magnesium stearate (vegetable source), silica, calcium silicate
Dose vs Functional Range
20% of score500 mg per capsule is the top of the 250-500 mg range seen in cholestasis pilot work, and one capsule is the full serving. Double Wood reaches the same 500 mg in two capsules and scores 8.5, so this scores the same: the dose is identical, one capsule is more convenient, and Double Wood's 250 mg capsules also allow a lower step. There is no established over-the-counter dose for TUDCA, so a higher number is not a better outcome. A bottle holds 30 servings.
- Per capsule
- 500 mg TUDCA per capsule; serving size 1 capsule (as printed)
- Supply
- 30 capsules = 30 servings (1 capsule daily)
Tolerability & Safety
15% of scoreA single ingredient with the usual mild bile-acid effects expected from the category, such as loose stools or GI upset. The directions are one capsule daily with 8-12 oz of water, and the warning says to ask a healthcare professional first if pregnant, nursing, taking medication or with a medical condition. Each capsule is the full 500 mg, so there is no lower step inside the bottle for people who want to see how they react first. Nutricost and Double Wood score 8.0; this scores half a point lower for that reason.
- Directions
- 1 capsule daily with 8-12 oz of water, or as directed by a healthcare professional
- Suitability
- No vegan, gluten-free or non-GMO claim on the pack; gelatin capsule
Value
15% of score$24.50 for 30 capsules is about $0.82 a capsule on Amazon on October 18, 2026, and a capsule is a full 500 mg serving (Subscribe and Save listed $22.05, about $0.74; the brand site lists $27.99). The Nutricost pick on this list shows about $0.83 for 500 mg, taken as two 250 mg capsules, so the price per 500 mg is about level. Nutricost keeps 8.3 on the strength of its testing claim; this scores 8.0, level with Double Wood, because the testing behind the price cannot be checked.
- Price
- $24.50 for 30 capsules = about $0.82 per capsule and per 500 mg serving (Amazon, checked October 18, 2026)
Label verified. Every figure read from the Supplement Facts photo, Oct 18, 2026.
Marketing Claims Vs. Reality
500 mg of TUDCA per serving, 30 servings.
Serving size 1 capsule, servings per container 30, TUDCA (tauroursodeoxycholic acid) 500mg, Daily Value not established, on the Supplement Facts panel in three gallery images.
Always third party tested.
Printed on the front of the bottle with no lab named. We found no PrimaForce listing on nsfsport.com, the Informed Sport list or the Informed Choice list, and no COA page on primaforce.com (checked October 18, 2026).
Made in an NSF certified facility, GMP compliant, each batch tested by a third-party ISO accredited laboratory.
These appear in the Amazon listing bullets and on the brand product page, not on the bottle. No facility or laboratory is named, so we could not look any of them up and we do not use them for scoring.
500 mg supports liver and bile-flow health.
500 mg sits at the top of the 250-500 mg range used in the cholestasis literature and TUDCA has a strong mechanistic rationale (PMID 24891994), but no over-the-counter human outcome trial validates a liver-health benefit for the supplement, and even prescription UDCA improved liver biochemistry without a clear survival benefit (PMID 23235576).
What Our Test Actually Found
The whole dose in one capsule
The panel prints 500 mg of TUDCA per capsule with a serving size of one capsule. That is the top of the 250-500 mg range in a single swallow, where Double Wood needs two capsules. It is a convenience edge, not an outcome edge: there is no established over-the-counter dose.
A claim is not a certificate
Always Third Party Tested tells you the brand says it tests. It does not say who tested, what for or what the result was. On October 18, 2026 we looked for PrimaForce at nsfsport.com and on the Informed Sport and Informed Choice lists and found none, and primaforce.com has no COA page. That is why it scores below Nutricost and well below the two leaders.
A clean panel with two blanks
One ingredient, no blend and a short list of other ingredients. The panel declares no source for the TUDCA and no purity percentage, so you cannot tell from the label whether it is synthesized or animal-derived. The other ingredients match the five printed on the Nutricost 250 mg panel.
No lower step in the bottle
Many people start TUDCA lower and move up if they tolerate it. Here one capsule is already the full 500 mg, so a gentler trial means choosing a 250 mg product instead.
Full analysis: all pros & cons (7), buy if / skip if
- Full 500 mg of TUDCA in one capsule, the top of the 250-500 mg range
- Single active ingredient, no blend and no stack
- About $0.82 per 500 mg serving, with no second capsule to buy
- 30 servings in a 30-capsule bottle, one capsule a day
- Testing claim names no lab; no certifier lists the brand and no COA is published
- No lower step inside the bottle: one capsule is the full 500 mg
- The panel declares no TUDCA source or purity percentage
- You want the full 500 mg in a single capsule, not two
- You want a single-ingredient panel with no blend and no stack
- A brand testing claim is enough for you, without a COA
- You want a lab, certifier listing or COA you can look up
- You want to start at 250 mg: one capsule here is the full 500 mg
- You want the TUDCA source or a purity figure printed on the panel
PrimaForce prints 500 mg of TUDCA per capsule on a clean single-ingredient panel, so a full serving is one capsule and the cost is about $0.82. The testing is where it falls short of the leaders: the front says Always Third Party Tested without naming a lab, and none of the certifier lists we checked carry the brand. Consider it if one-capsule convenience at the top of the range is what you want and a brand testing claim is enough for you; step up to Double Wood or BodyBio if verified testing matters most.
PrimaForce TUDCA is a single-ingredient capsule with 500 mg of tauroursodeoxycholic acid per capsule, 30 capsules to the bottle, one capsule a day. That is the top of the 250-500 mg range used in the cholestasis literature, in one capsule rather than two. The other ingredients are a gelatin capsule, rice flour, magnesium stearate from a vegetable source, silica and calcium silicate. On October 18, 2026 it cost $24.50 on Amazon, about $0.82 a capsule. The front prints Always Third Party Tested without naming a lab, and we found the brand on none of the certifier lists we checked. The honest limitation is the same one that applies to the whole list: there is no clinical outcome data behind over-the-counter TUDCA itself.
Convenient 500 mg, unverified testing
PrimaForce gives you the full 500 mg in one capsule, on a clean single-ingredient panel, for about $0.82 a serving. That is a real convenience over two-capsule 500 mg products. What it does not give you is a way to check the testing: the front says Always Third Party Tested, no lab is named, no certifier lists the brand and no COA is published. For a bile acid, where purity is the one thing you cannot judge yourself, that keeps it below Nutricost and well below Double Wood and BodyBio. Buy it if one-capsule convenience at the top of the range is the point and you accept a brand testing claim; otherwise pay for the documented testing.
If This Doesn’t Fit — Try These
Double Wood TUDCA Bile Salts
The same 500 mg per serving, taken as two capsules, with a higher testing score on this list.
BodyBio TUDCA
The highest testing score on this list if verification matters more than price.
Nutricost TUDCA 250mg
A 250 mg capsule at a low price, which lets you start lower and scale up.
Quick Answers
How much TUDCA is in one PrimaForce capsule?
500 mg. The Supplement Facts panel gives a serving size of 1 capsule and 30 servings per container, with TUDCA (tauroursodeoxycholic acid) at 500 mg per capsule. The directions say to take 1 capsule daily with 8-12 oz of water, so one capsule is one full serving. The Daily Value is not established.
Is PrimaForce TUDCA really third party tested?
The front of the bottle prints Always Third Party Tested and names no lab. On October 18, 2026 we found no PrimaForce listing on nsfsport.com, the Informed Sport list or the Informed Choice list, and primaforce.com has no COA page. The Amazon listing also says the capsules are made in an NSF certified facility and that each batch is tested by a third-party ISO accredited laboratory, but none of that is printed on the bottle and no facility or lab is named, so we could not check it.
Is 500 mg in one capsule better than two 250 mg capsules?
It is more convenient, not demonstrably better. 500 mg is the top of the 250-500 mg range used in the cholestasis literature, and there is no established over-the-counter dose. The trade-off is that there is no lower step inside this bottle: if you want to start at 250 mg, you would have to use a different product, such as the Nutricost 250 mg capsules.
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] Rudic JS, et al. Ursodeoxycholic acid for primary biliary cirrhosis. Cochrane Database Syst Rev. 2012;12:CD000551. PMID 23235576 — Ursodeoxycholic acid for primary biliary cirrhosis. Meta-analysis found UDCA improves liver biochemistry but did not significantly reduce mortality or transplant — a caution that biochemical change need not equal hard outcomes.
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