The short answer · Bleeding tendency
Take vitamin k1 (phylloquinone) for bleeding tendency. This is the one to buy.

Codeage, A, D, K Vitamins+, 180 Vegetable Capsules
4.8· 1,135 ratings· $0.22/serving
Vitamin K1 (Phylloquinone) 1000 mcg — inside the studied 1000-10000 mcg window
Of 3,291 products scored for Bleeding tendency, Codeage, A, D, K Vitamins+, 180 Vegetable Capsules ranks #1 with a DoseRank score of 82. Vitamin K1 (Phylloquinone) is the strongest evidence signal for this outcome.
Retailer links may be affiliate links. Rankings and placement are never paid.
The form“Why Vitamin K1 (Phylloquinone) — not Vitamin K or Vitamin E?”Evidence Strong evidence
Vitamin K1 (Phylloquinone) is the strongest evidence signal for this outcome.
- Vitamin K1 (Phylloquinone)The pick
Strong evidence · 1000 mcg
The main dietary form of vitamin K, abundant in leafy greens; central to liver-based clotting-factor synthesis, with weaker bone and cardiovascular evidence than K2 forms.
- Vitamin K
Strong evidence · 24 mg
Fat-soluble vitamin found as K1 (plant phylloquinone) and K2 (menaquinones); essential for blood-clotting factors and directing calcium to bone.
- Vitamin E
Moderate evidence · 6 mg
Fat-soluble antioxidant vitamin found as tocopherols and tocotrienols; alpha-tocopherol is the most studied, shielding cell membranes from lipid peroxidation.
The dose“Is the dose actually effective?”Dose fit 67
Vitamin K1 (Phylloquinone) at 1000 mcg lands inside the studied 1000-10000 mcg window.
Vitamin K1 (Phylloquinone)
Studied window 1000-10000 mcg · this pick 1000 mcg
The ranking“Why should I trust this pick?”Trust 78
Solid trust signals from buyer ratings, with room to grow. 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.
- 3,291 products scored
- Never paid placement
- Evidence level: Strong · 92
- 313 brands
- 16 ingredients
The price“Can I do better than $0.22 a serving?”Value 50
$0.22 per serving — high price tier for this outcome. The cheapest ranked pick here is $0.18 per serving.
- 3Nature's Life, Revitalizing Vitamin K, 1,000 mcg, 50 VegCapsScore 78 · $0.18/servingiHerb
- 4KAL, Bone Meal, 250 TabletsScore 78 · $0.21/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 $0.22 a serving.Codeage, A, D, K Vitamins+, 180 Vegetable Capsules — in stock at a tracked retailer.
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Codeage, A, D, K Vitamins+, 180 Vegetable Capsules ranks #1 for Bleeding tendency with a DoseRank score of 82. The score blends clinical strength, evidence, dose fit, trust signals and value across 3,291 products scored for this outcome.