The short answer · Alanine aminotransferase (ALT)
Take d-alpha tocopherol for alanine aminotransferase (alt). This is the one to buy.

Solgar, Vitamin E, 100 Softgels
4.8· 2,526 ratings· $0.23/serving
d-Alpha Tocopherol 670 mg — higher than the studied 268-536 mg window
Of 2,059 products scored for Alanine aminotransferase (ALT), Solgar, Vitamin E, 100 Softgels ranks #1 with a DoseRank score of 85. d-Alpha Tocopherol is the strongest evidence signal for this outcome.
Retailer links may be affiliate links. Rankings and placement are never paid.
The form“Why d-Alpha Tocopherol — not TUDCA or Silymarin?”Evidence Strong evidence
d-Alpha Tocopherol is the strongest evidence signal for this outcome.
- d-Alpha TocopherolThe pick
Strong evidence · 670 mg
Natural-source vitamin E, the single RRR-alpha-tocopherol isomer; roughly twice the biological activity of synthetic dl-alpha-tocopherol per labeled milligram.
- TUDCA
Strong evidence · 300 mg
Tauroursodeoxycholic acid, a bile-acid conjugate; supports bile flow and is studied for liver and mitochondrial protection.
- Silymarin
Strong evidence · 600 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.
The dose“Is the dose actually effective?”Dose fit 91
d-Alpha Tocopherol at 670 mg is higher than the studied 268-536 mg window.
d-Alpha Tocopherol
Studied window 268-536 mg · this pick 670 mg
The ranking“Why should I trust this pick?”Trust 87
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.
- 2,059 products scored
- Never paid placement
- Evidence level: Strong · 90
- 269 brands
- 18 ingredients
The price“Can I do better than $0.23 a serving?”Value 68
$0.23 per serving — mid price tier for this outcome. The cheapest ranked pick here is $0.10 per serving.
- 7Solgar, Vitamin E, Naturally Sourced, 268 mg (400 IU), 250 SoftgelsScore 84 · $0.10/servingiHerb
- 2NOW Foods, E-400 with Mixed Tocopherols, 268 mg (400 IU), 250 SoftgelsScore 85 · $0.11/servingiHerb
Why not the absolute cheapest? The DoseRank score also weighs clinical strength, evidence, dose fit and trust — the very cheapest listings rarely hold up everywhere else.
Ready?
The #1 pick is $0.23 a serving.Solgar, Vitamin E, 100 Softgels — in stock at a tracked retailer.
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Solgar, Vitamin E, 100 Softgels ranks #1 for Alanine aminotransferase (ALT) with a DoseRank score of 85. The score blends clinical strength, evidence, dose fit, trust signals and value across 2,059 products scored for this outcome.
Keep exploring
Other outcomes
- Alkaline phosphataseEnzyme related to bile ducts, bone, and liver.
- Aspartate aminotransferase (AST)Enzyme used to assess liver and muscle injury.
- Gamma-glutamyl transferase (GGT)Marker of cholestasis, alcohol exposure, or hepatic stress.
- Liver functionOverall biochemical or clinical hepatic performance.