The short answer · Aspartate aminotransferase (AST)

Swanson Vitamins, Milk Thistle, 120 Capsules
4.7· 2,463 ratings· $0.08/serving
Silymarin 250 mg — inside the studied 140-700 mg window
Of 644 products scored for Aspartate aminotransferase (AST), Swanson Vitamins, Milk Thistle, 120 Capsules ranks #1 with a DoseRank score of 85. Silymarin and Milk Thistle are the strongest evidence signals for this outcome.
Silymarin and Milk Thistle are the strongest evidence signals for this outcome.
Strong evidence · 250 mg
The active flavonoid complex from milk thistle (Silybum marianum) and its main bioactive; supports liver cells by stabilizing membranes and acting as an antioxidant.
Strong evidence · 250 mg
Extract of Silybum marianum seeds; its silymarin flavonolignans are antioxidant compounds traditionally used to support liver cells and buffer against hepatotoxins.
Strong evidence · 320 mg
Silybin, milk thistle's main active fraction, bound to phosphatidylcholine; the phytosome greatly boosts absorption over plain silymarin for liver-cell support.
Questions
Swanson Vitamins, Milk Thistle, 120 Capsules ranks #1 for Aspartate aminotransferase (AST) with a DoseRank score of 85. The score blends clinical strength, evidence, dose fit, trust signals and value across 644 products scored for this outcome.
Silymarin and Milk Thistle are the strongest evidence signals for this outcome.
2 of 2 dosed ingredients land in the studied range. Silymarin at 250 mg lands inside the studied 140-700 mg window. DoseRank scores this product's dose fit at 71 out of 100.
Swanson Vitamins, Milk Thistle, 120 Capsules works out at $0.08 per serving. $0.08 per serving — low price tier for this outcome. Nothing else in this ranking costs less per serving.
No. Retailer links may be affiliate links, but rankings and placement are never paid. Every product is scored by the same public model, and the ranking is recomputed from the underlying product data rather than edited by hand.
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Retailer links may be affiliate links. Rankings and placement are never paid.
2 of 2 dosed ingredients land in the studied range. Silymarin at 250 mg lands inside the studied 140-700 mg window.
Silymarin
Studied window 140-700 mg · this pick 250 mg
Milk Thistle
Studied window 140-800 mg · this pick 250 mg
Strong trust signals — consistently high marks from verified buyer ratings. Each product gets a DoseRank score blending clinical strength, evidence, dose fit, trust and value. Retailer links may be affiliate links — the scoring model decides placement, never payment from a brand.
$0.08 per serving — low price tier for this outcome. Nothing else in this ranking costs less per serving.
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The #1 pick is $0.08 a serving.Swanson Vitamins, Milk Thistle, 120 Capsules — in stock at a tracked retailer.
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