Verified
“USDA Organic, whole-fruit full-spectrum extract”
The product carries USDA Organic certification and uses Gaia's Silactive whole-fruit liquid extract rather than an isolate — a genuine full-spectrum, food-form product.
Gaia Herbs Milk Thistle Seed, 120 Vegan Liquid Phyto-Caps Review
SAC StudioBest Organic Full-SpectrumCONSIDER
How the score breaks downHide breakdown
SAC Product Score™ — how it breaks down
- Form & Bioavailability30%6.0
- Silymarin/Silybin Dose vs Clinical Range25%8.4
- Third-Party Testing & Quality Assurance20%7.5
- Value per Effective Serving15%5.0
- Formulation Suitability & Tolerability10%8.5
Disclosed dose, premium price
✓ Buy if…
- You want a disclosed, clinical-range silymarin dose from an organic, whole-fruit extract
- You value lot-level traceability and a food-form extract
✗ Skip if…
- You want phytosome-level bioavailability (Thorne, Life Extension)
- You want the best value per serving — three caps a day at ~$0.75 is the priciest here
Read the full analysis
✓ Also buy if…
- You specifically want a full-spectrum, non-isolate product
The organic, whole-plant pick that also states its numbers: 750 mg of USDA Organic Silactive milk thistle fruit extract standardized to 375 mg silymarin per 3-cap serving, in a vegan liquid phyto-cap with Meet Your Herbs lot-level traceability. What holds it back on this list is form and price — no phytosome, and the highest cost per serving here.
How we built the SAC Product Score™ — 7/10
Form & Bioavailability30%6/10
A whole-fruit liquid extract (Silactive) in a liquid phyto-cap, which the brand says aids delivery over dry powder. A genuine full-spectrum food-form — but not a phytosome, so it doesn't earn the bioavailability credit the top two picks do.
Silymarin/Silybin Dose vs Clinical Range25%8.4/10
The Supplement Facts panel discloses 375 mg silymarins per 3-capsule serving (750 mg extract, 50% silymarin) — inside the range the major trials used. More silymarin per serving than the 300 mg / 80% extracts on this list, behind only the phytosome-based Life Extension pick.
Third-Party Testing & Quality Assurance20%7.5/10
Strong provenance credentials: USDA Organic (certified by Oregon Tilth), non-GMO, and Meet Your Herbs lot-level traceability — sourcing and purity you can check, plus a silymarin figure stated outright on the panel.
Value per Effective Serving15%5/10
The most expensive per serving here (~$0.75 for 3 caps). You do get 375 mg silymarin for that — but the 80%-standardized extracts deliver 240 mg for roughly a third of the daily cost.
Formulation Suitability & Tolerability10%8.5/10
Vegan, cleanly formulated, USDA Organic and traceable — an excellent suitability profile for buyers who prioritize sourcing and clean-label criteria.
The product at a glance
- Form
- Organic Silactive whole-fruit liquid extract (vegan liquid phyto-cap)
- Herb load
- 22,500 mg dry-herb equivalent per 3-cap serving
- Silymarin
- 375 mg per 3-cap serving (750 mg extract, 50% silymarin)
- Supply
- 120 capsules = 40 servings (3 caps each)
- Certification
- USDA Organic, non-GMO, Meet Your Herbs traceability
- Price
- ~$30
- Cost per serving
- ~$0.75/serving (3 caps)
Marketing claims vs. reality
Verified
“Lot-level traceability via Meet Your Herbs”
Gaia's Meet Your Herbs program provides lot-specific sourcing and testing information, supporting the traceability claim.
Not verified
“Liquid phyto-cap aids delivery versus dry powder”
This is a brand claim; there is no cited independent head-to-head showing the liquid phyto-cap outperforms dry powder for silymarin absorption, and no phytosome complexation is involved.
Verified
“Delivers an effective milk thistle dose”
The Supplement Facts panel states 375 mg silymarins per serving — inside the 140–420 mg/day range used across the major silymarin trials.
What our test actually found
01The provenance is genuinely best-in-class
On sourcing, Gaia leads the page: USDA Organic, whole-fruit full-spectrum, non-GMO, with lot-level Meet Your Herbs traceability. If organic, food-form, traceable milk thistle is your priority, nothing else here matches it.
02Correction: the panel states 375 mg silymarin
An earlier version of this review said the label doesn't disclose a silymarin figure. It does — the Supplement Facts panel reads 750 mg organic Silactive extract standardized to 375 mg silymarins per 3-capsule serving. That is a clinical-range dose and more silymarin than most 300 mg / 80% extracts deliver (240 mg). We re-read the label on Sep 2, 2026 and revised the score from 5.8 to 7.0.
03Costliest per serving, three caps each
At ~$0.75 per 3-cap serving it's the most expensive here — you pay for organic whole-fruit sourcing. Per 100 mg of silymarin it is still the priciest option on the list.
04Philosophy AND a stated number — but no phytosome
What keeps it mid-list is bioavailability, not disclosure: the liquid phyto-cap has no independent absorption data, while the phytosome picks at #1–#2 do. Buy it for organic, whole-plant sourcing with a clinical-range dose you can read off the label.
Pros & cons, no sugar-coating
Pros
- Whole-fruit, full-spectrum organic extract (Silactive) rather than an isolate
- Discloses 375 mg silymarin per serving on the Supplement Facts panel
- Liquid phyto-cap format the brand says aids delivery vs dry powder
- USDA Organic + non-GMO + lot-level traceability
- Vegan and cleanly formulated
Cons
- Not a phytosome — the bioavailability edge of the top two picks
- Needs 3 caps per serving and costs the most per serving here
- Liquid phyto-cap delivery claim has no independent head-to-head data
Disclosed dose, organic sourcing, premium price
Gaia states its silymarin outright — 375 mg per serving from a USDA Organic whole-fruit extract with lot-level traceability. That earns a solid mid-list score; what it doesn't earn is the phytosome bioavailability credit or a value win. Buy it if organic, whole-plant sourcing and a stated clinical-range dose matter more than cost.
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If this doesn’t fit — try these
Pure Encapsulations Silymarin
7.8/10A clean, hypoallergenic vegan option with ~200 mg silymarin per cap at a lower daily cost.
See it on the list →Jarrow Formulas Milk Thistle 150 mg
6.9/10A vegan, allergen-free extract with a standardized 80% silymarin figure and lower cost.
See it on the list →Nutricost Milk Thistle 300 mg
7.5/10If you want a verifiable, standardized dose at the best value on the page.
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 mortality benefit for milk thistle in liver disease — the category's evidence is mixed regardless of brand, which is why dose and form, not marketing, drive our score.
- 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
Even at 700 mg silymarin three times daily the primary histological endpoint was missed — a reminder that a disclosed, generous dose is necessary but not sufficient.