Peptide Atlas · Vitamin

Phytonadione (Vitamin K1)

Newborns are at risk of vitamin K deficiency bleeding in their first six months; under Switzerland's oral vitamin K prophylaxis, nine cases occurred among 505,708 births (2018-2024), all in exclusively breast-fed infants with risk factors such as refused prophylaxis.

established

provisional
PubChem 5284607
2 citations
0 discussions
0 followers
2-methyl-3-phytyl-1,4-naphthoquinone
Phylloquinone
Phytomenadione
Vitamin K1

Follow this molecule Ask the Hunter-Gatherer

What the evidence says

six tiers, never blended

established — replicated in humans, or settled by a regulator

every claim resolves to its source

All 2 citations resolve to their original source. · 0 posts naming it, 0 members counted once each.

Evidence, kept apart

The Atlas never mixes evidence types into one blob. Each claim below carries the tier it actually sits in; an unresolved citation is shown and does not move the page.

Evidence map for Phytonadione (Vitamin K1). Tier reflects study design, not enthusiasm.
Claim	Tier	Source
Incidence of anaphylaxis after intravenous phytonadione (retrospective)	emerging	pmid 12392385
Oral neonatal vitamin K prophylaxis in Switzerland: incidence of deficiency bleeding	established	pmid 41545738

Unanswered questions

No open questions on file. Either everything about this molecule is known, or nobody has admitted what is not.

Negative findings

failure is information

Nobody has filed a failure yet. Failures are information; this list is waiting for an honest one.