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Milk Thistle
herbal · 29 active deals
How much does Milk Thistle cost?
The best-value Milk Thistle right now is about $0.03 per dose — across the 25 we can price per dose the median is $0.165/dose, so shopping on cost-per-dose can cut your cost several-fold. Every Milk Thistle deal here is ranked by cost per dose — what you actually pay per serving, not the sticker price — because forms and absorption differ, so the cheapest bottle isn’t always the cheapest dose.
Prices checked · live from the Amazon US catalog.
Right now the best value across our full Milk Thistle catalog is at $0.03 per serving.
Median $0.165/servingCheapest quartile under $0.112across 25 tracked Milk Thistle deals
What Milk Thistle does
Milk thistle is a tall plant with large purple flowers native to Europe, and its main constituent is silymarin; it is promoted for liver disorders, diabetes, and other conditions. The page states there isn't enough high-quality evidence to allow definite conclusions about the effects of milk thistle on health conditions in people. Small studies suggest it may help control blood sugar in people with type 2 diabetes, though results are geographically limited, and for liver disease results from clinical trials have been conflicting or too limited to allow conclusions, with two NCCIH-funded studies showing no benefit from supplementation — per the NIH National Center for Complementary and Integrative Health; not medical advice.
What the evidence shows for Milk Thistle
There isn't enough high-quality evidence to reach definite conclusions about milk thistle; a small number of studies suggest it may help control blood sugar in type 2 diabetes, while trials for liver diseases have been conflicting or too limited to allow conclusions — per the U.S. National Center for Complementary and Integrative Health (NCCIH).
Milk Thistle — safety & side effects
When taken orally, milk thistle appears to be well tolerated, with the most common side effects being digestive symptoms such as bloating, nausea, and gas; allergic reactions are possible in people allergic to related plants such as ragweed, chrysanthemum, marigold, and daisy. Some products may contain amounts of silymarin substantially different from what's stated on the label or be contaminated with pesticides, microorganisms, or mycotoxins — per the NIH National Center for Complementary and Integrative Health.
Milk Thistle — interactions & cautions
If you take any type of medicine, talk with your health care provider before using milk thistle or other herbal products, as some herbs and medicines interact in harmful ways. Little is known about whether it's safe to use milk thistle during pregnancy or while breastfeeding — per the NIH National Center for Complementary and Integrative Health.
Source: NIH Office of Dietary Supplements — Milk Thistle fact sheet
Source: NIH National Center for Complementary and Integrative Health — Milk Thistle
Resilia Milk Thistle Silymarin – 300 mg Supplement…
Resilia Oil Of OreganoAmazon.com
$0.40/serving
$11.990°
Nature's Bounty Milk Thistle 1000 mg, 50 Softgels (3 Pack)
Nature's BountyAmazon.com
$0.20/serving
$30.500°
Hurbix Berberine - 1300 mg | 5 in 1 Enhanced Formula with Milk…
HURBIX NUTRITIONAmazon.com
$0.23/serving
$13.990°
NOW Foods Supplements, Red Yeast Rice with CoQ10, plus Milk…
NOW FoodsAmazon.com
$0.21/serving
$25.280°
Milk Thistle Extract Powder – 80% Silymarin Standardized
SIERRA LIFE SCIENCESAmazon.com
$0.05/serving
$16.950°
BulkSupplements.com Milk Thistle Extract Powder - Herbal…
BulkSupplements.comAmazon.com
$0.03/serving
$26.970°
NOW Foods Supplements, Silymarin Milk Thistle Extract 300 mg…
NOW FoodsAmazon.com
$0.13/serving
$25.040°
NOW Foods Supplements, Silymarin Milk Thistle Extract 300 mg…
NOW FoodsAmazon.com
$0.12/serving
$28.990°
Jarrow Formulas Milk Thistle Supplement 150 mg. 30:1 Milk…
Jarrow FormulasAmazon.com
$0.15/serving
$29.360°
OxyEnergy Silymarin Milk Thistle 300mg Extract with Vitamin C
OxyEnergyAmazon.com
$0.31/serving
$27.950°
Every Milk Thistle deal above is ranked by real cost per dose with no paid placement — see our and .
Independent testing
1 of 21 tracked Milk Thistle brands here are flagged as carrying independent third-party testing — a voluntary check of a product's identity, potency and contaminants by an outside lab. It's a quality signal, not a value or efficacy claim. Confirm any brand's current status on the official registries:
Testing status is self-reported by the brand or drawn from public certification and may change — always verify on the official registry before purchase.
Milk Thistle — dosage, safety & deals FAQ
- What is milk thistle used for?
Milk thistle has been studied for liver diseases and for blood sugar control in type 2 diabetes, but results from liver-disease trials have been conflicting or too limited to allow conclusions, and overall there isn't enough high-quality evidence to draw definite conclusions about its effects on health conditions. — per the NIH National Center for Complementary and Integrative Health; general information, not medical advice.
- How much milk thistle is typically taken?
This NIH page does not provide a specific recommended dose or amount for milk thistle, so a typical intake cannot be stated from this source. — per the NIH National Center for Complementary and Integrative Health; general information, not medical advice.
- Is milk thistle safe and what are the side effects?
Taken orally, milk thistle appears to be well tolerated, and the most common side effects are digestive symptoms such as bloating, nausea, and gas; note that some products have been found to contain amounts of silymarin different from the label or to be contaminated with pesticides, microorganisms, or mycotoxins. — per the NIH National Center for Complementary and Integrative Health; general information, not medical advice.
- Does milk thistle interact with any medications?
The page advises that if you take any type of medicine you should talk with your health care provider before using milk thistle or other herbal products, since some herbs and medicines can interact in harmful ways. — per the NIH National Center for Complementary and Integrative Health; general information, not medical advice.
Related herbal supplements
References & sources
- Milk Thistle — NIH National Center for Complementary and Integrative Health
- USP Verified product participants — U.S. Pharmacopeia
- NSF certified products — NSF
We link primary sources and paraphrase their findings — never copy their text, tables, or images. Cost-per-dose figures are our own first-party catalog data.