Verified
“Standardized to 80% silymarin (~200 mg per capsule)”
The label discloses the 250 mg extract standardized to 80% silymarin, yielding roughly 200 mg silymarin per capsule.
Reviewed
Verified by SAC team
+20
XP on completion
Cleanest Formula
Pure Encapsulations
Pure Encapsulations Silymarin (Milk Thistle) 250 mg, 120 Capsules Review
7.8/10SAC Product Score™
If you react to fillers or simply want the cleanest possible silymarin, this is the one. Pure Encapsulations builds a bare-bones, minimal-excipient capsule — ~200 mg of silymarin from an 80%-standardized extract with cellulose as the only companion ingredient — backed by one of the strongest raw-material testing programs in the industry. What you're buying is purity and QC, not enhanced absorption.
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Read the complete Milk Thistle (Silymarin) guide →How we built the SAC Product Score™ — 7.8/10
Form & Bioavailability30%7/10
Plain (non-phytosome) milk thistle extract standardized to 80% silymarin. Absorption is the ordinary oral ceiling — take it with food. It grades above the budget plain extracts only because the standardization and formula quality are impeccable, not because delivery is enhanced.
Silymarin/Silybin Dose vs Clinical Range25%8.3/10
~200 mg silymarin per capsule, and the label's 1–4 caps/day range makes it easy to titrate into the trial-level dose window without over- or under-shooting.
Third-Party Testing & Quality Assurance20%8.5/10
A standout raw-material testing program and a QC reputation clinicians trust reflexively. It stops just short of the top only because it carries no independent NSF or USP seal despite the premium price.
Value per Effective Serving15%6.5/10
At ~$42 it's among the priciest here, and the money buys purity and testing rather than dose or absorption. Cost-per-milligram trails every value pick.
Formulation Suitability & Tolerability10%9.5/10
The best on this axis: a cellulose capsule with essentially no other excipients, non-GMO, gluten-free and vegan. The obvious choice for sensitive users.
The product at a glance
- Form
- Milk thistle extract, 80% silymarin (veg capsule)
- Silymarin load
- ~200 mg silymarin per capsule
- Supply
- 120 capsules (label: 1 cap 1–4× daily)
- Excipients
- Cellulose capsule only — hypoallergenic
- Testing
- Brand third-party raw-material testing program
- Suitability
- Non-GMO, gluten-free, vegan
- Price
- ~$42 (~$0.35/cap)
Marketing claims vs. reality
Verified
“Hypoallergenic, minimal-excipient formula”
The only companion ingredient is the cellulose capsule; the product is non-GMO, gluten-free and vegan, consistent with the hypoallergenic claim.
Verified
“Rigorous raw-material testing”
Pure Encapsulations runs a documented raw-material and finished-product testing program, a core part of its clinic-grade reputation.
Partial
“Supports liver and detoxification function”
Mechanistic support exists, but plain extract has an ordinary absorption ceiling and high-quality clinical trials (Rambaldi 2007) show no mortality benefit, so a functional-outcome claim is only partly supported.
What our test actually found
01Purity is the pitch
On the 10%-weighted suitability axis this is the best in the set — a cellulose capsule and effectively nothing else. If fillers, flow agents or coatings bother you, this removes them from the equation.
02Flexible dosing is underrated
The 1–4 cap/day range lets you titrate to a trial-level silymarin dose precisely, rather than being locked to a fixed serving. That flexibility is part of why it out-scores the budget plain extracts on dose.
03You pay for testing, not absorption
It's plain extract, so bioavailability is the normal ceiling — take it with a meal. The premium goes to Pure Encapsulations' raw-material testing and reputation, not a phytosome edge.
04No seal despite the price
For $42 you might expect an NSF or USP mark; there isn't one. The brand's own testing program is strong, but the lack of an independent seal is the one gap at this price point.
Pros & cons, no sugar-coating
Pros
- ~200 mg silymarin/cap and a flexible 1–4 cap/day range make clinical doses easy to reach
- Minimal-excipient, hypoallergenic formula — a physician favorite
- Strong brand QC and raw-material testing reputation
- Vegan and gluten-free
Cons
- Plain (non-phytosome) extract, so the standard absorption ceiling applies
- Premium price buys purity and QC, not enhanced bioavailability
- No independent NSF/USP seal despite the price
The cleanest silymarin money can buy
If you react to fillers or just want the cleanest possible silymarin, this is the one — a bare-bones, hypoallergenic capsule from a brand clinicians reach for by reflex. Just know what you're paying for: purity and testing, not absorption. It's plain extract, so take it with food and don't expect the phytosome edge that #1 and #2 deliver.
Check Pure Encapsulations on AmazonIf this doesn’t fit — try these
Thorne Milk Thistle Phytosome
8.6/10Same clinic-grade cleanliness, but with the phytosome absorption edge Pure lacks.
See it on the list →Nutricost Milk Thistle 300 mg
7.5/10A cleaner-than-most plain extract at a quarter of the price if purity isn't your top axis.
See it on the list →Jarrow Formulas Milk Thistle 150 mg
6.9/10Another vegan, allergen-free option — cheaper per cap but a lower dose.
See it on the list →Sources & further reading
- Rambaldi A, Jacobs BP, Gluud C. Milk thistle for alcoholic and/or hepatitis B or C virus liver diseases. Cochrane Database Syst Rev. 2007;(4):CD003620.Rambaldi A, Jacobs BP, Gluud C · 2007 · Cochrane Database of Systematic Reviews · PMID 17943794
Milk thistle for alcoholic and/or hepatitis B or C virus liver diseases
No significant effect of milk thistle on all-cause mortality in liver disease was found versus placebo.
- Gillessen A, Schmidt HH. Silymarin as Supportive Treatment in Liver Diseases: A Narrative Review. Adv Ther. 2020;37(4):1279-1301.Gillessen A, Schmidt HH · 2020 · Advances in Therapy · PMID 32065376
Silymarin as Supportive Treatment in Liver Diseases: A Narrative Review
Reports favorable supportive effects of silymarin at a lower evidence tier than controlled trials.