Verified
“Provides ~480 mg silymarin / ~180 mg silybin per serving”
The label discloses the standardized silymarin and silybin content per 2-softgel serving, and standardization to specific silybin isomers backs the number.
Reviewed
Verified by SAC team
+20
XP on completion
Highest Dose + Absorption
Life Extension
Life Extension Advanced Milk Thistle, 120 Softgels Review
8.4/10SAC Product Score™
If your goal is to hit a trial-level silymarin dose without swallowing four capsules, this is the formula. One two-softgel serving delivers roughly 480 mg of standardized silymarin (~180 mg silybin) and stacks a 160 mg Siliphos phytosome fraction on top, so you get both dose and an absorption hedge in the same serving. The catches are soy content and top-of-set per-serving price.
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Read the complete Milk Thistle (Silymarin) guide →How we built the SAC Product Score™ — 8.4/10
Form & Bioavailability30%9/10
A hybrid: high-dose standardized extract plus a 160 mg Siliphos silybin-phytosome fraction. You get the absorption hedge of a phytosome layered onto a genuinely large silymarin load — close to the top of the category on form.
Silymarin/Silybin Dose vs Clinical Range25%9.5/10
At ~480 mg silymarin / ~180 mg silybin per 2-softgel serving, this is the highest disclosed load in the set and lands squarely in the range used in clinical trials — the best score on this axis.
Third-Party Testing & Quality Assurance20%8.8/10
NSF-registered GMP facility with a Certificate of Analysis available. Strong, well-documented QC — a notch below Thorne's certification reputation but clearly above the budget field.
Value per Effective Serving15%6.5/10
The priciest-per-serving of the standardized options, and a two-softgel serving. The dose and dual-delivery justify it, but on pure cost-per-serving it trails the value picks.
Formulation Suitability & Tolerability10%6/10
The softgel and phospholipid contain soy, which rules it out for soy-avoiders. Otherwise well tolerated, but the allergen profile is the weak point that keeps it off the #1 spot.
The product at a glance
- Form
- Standardized extract + Siliphos silybin-phospholipid (softgel)
- Silymarin load
- ~480 mg silymarin / ~180 mg silybin per 2-softgel serving
- Phytosome add-on
- 160 mg Siliphos silybin-phytosome
- Supply
- 120 softgels = 60 servings
- Standardization
- Silibinins + isosilybin A & B
- Testing
- NSF-registered GMP facility; CoA available
- Price
- ~$32 (~$0.53/serving)
Marketing claims vs. reality
Not verified
“Up to 3× better absorption”
The Siliphos fraction does raise silybin absorption in principle, but the specific '3×' multiplier is a manufacturer claim without a cited independent head-to-head against this exact formula.
Verified
“Standardized to silibinins and isosilybin A & B”
The label specifies standardization to defined silybin isomers rather than only total silymarin, which is a genuine formulation strength.
Partial
“Supports healthy liver function”
Dose is in the trial range, but high-quality RCTs and meta-analyses (Rambaldi 2005; Wah Kheong 2017) did not confirm a clinical benefit, so the functional claim is only partially supported.
What our test actually found
01One serving hits the trial range
Several liver studies dosed around 420 mg/day of silymarin; this serving clears that at ~480 mg without asking you to count out four capsules. On the 25%-weighted dose axis it's the class leader.
02The phytosome is a hedge, not the whole formula
Only 160 mg of the load is the Siliphos phytosome; the rest is standardized extract. You get an absorption boost on part of the dose — useful, but don't read it as a fully phospholipid-complexed product like Thorne.
03Soy is the real disqualifier
The softgel and phospholipid contain soy. That single fact, plus the highest per-serving price of the standardized options, is why a formula that beats #1 on dose still lands at #2.
04The 3× number is the brand's
Absorption enhancement from Siliphos is real, but the exact multiplier comes from the manufacturer. Treat it as directional, not a verified head-to-head result.
Pros & cons, no sugar-coating
Pros
- Highest disclosed silymarin load in the set — right in the clinical range per serving
- Adds a Siliphos phytosome fraction on top of high-dose standardized extract
- Standardized to specific silybin isomers, not just total silymarin
- NSF-registered manufacturing with a Certificate of Analysis
Cons
- Contains soy (softgel/phospholipid) — off-limits for soy-avoiders
- Two-softgel serving and the priciest-per-serving standardized option
- 'Up to 3× absorption' is a brand claim, not an independent head-to-head
The strongest formulation — soy and price aside
This is the pick if your goal is to hit a trial-level silymarin dose without counting out four capsules — one serving does it, and the Siliphos fraction hedges the absorption problem. The catches are real: it contains soy, it costs the most per serving of the standardized options, and the absorption multiplier is the brand's own number. For a soy-tolerant buyer who wants dose and bioavailability in one bottle, it's the strongest formulation on the page — it loses the top spot only on soy and price.
Check Life Extension on AmazonIf this doesn’t fit — try these
Thorne Milk Thistle Phytosome
8.6/10A cleaner, soy-free phytosome from a stronger QC name — at a lower per-cap dose.
See it on the list →Solaray Milk Thistle Seed Extract 350 mg
7.2/10The highest single-capsule plain-extract dose if you want a soy-free one-a-day.
See it on the list →Nutricost Milk Thistle 300 mg
7.5/10Skip the phytosome and take two cheap standardized caps for a fraction of the cost.
See it on the list →Sources & further reading
- Rambaldi A, Jacobs BP, Iaquinto G, Gluud C. Milk thistle for alcoholic and/or hepatitis B or C liver diseases—a systematic review with meta-analyses. Am J Gastroenterol. 2005;100(11):2583-2591.Rambaldi A, Jacobs BP, Iaquinto G, Gluud C · 2005 · American Journal of Gastroenterology · PMID 16279916
Milk thistle for alcoholic and/or hepatitis B or C liver diseases—a systematic review with meta-analyses of randomized clinical trials
In high-quality trials, milk thistle did not significantly influence mortality or complications of liver disease.
- Wah Kheong C, Nik Mustapha NR, Mahadeva S. A Randomized Trial of Silymarin for the Treatment of Nonalcoholic Steatohepatitis. Clin Gastroenterol Hepatol. 2017;15(12):1940-1949.Wah Kheong C, Nik Mustapha NR, Mahadeva S · 2017 · Clinical Gastroenterology & Hepatology · PMID 28419855
A Randomized Trial of Silymarin for the Treatment of Nonalcoholic Steatohepatitis
At 700 mg silymarin three times daily (2,100 mg/day), the primary histologic endpoint was not met, though fibrosis showed some improvement.