Last reviewed · How we verify

Andion (ANISINDIONE)

Merck & Co. · FDA-approved approved Small molecule

Andion works by inhibiting Vitamin K-dependent gamma-carboxylase, an enzyme necessary for blood clotting.

Andion (ANISINDIONE) is a small molecule drug developed by SCHERING that targets Vitamin K-dependent gamma-carboxylase. It is an anisindione class medication, approved by the FDA in 1957 for certain indications. As an off-patent medication, there are no active Orange Book patents, and it is not currently manufactured by any generic manufacturers. Andion is used to treat certain conditions, but its exact indications and commercial status require further research. Key safety considerations are not well-documented due to the lack of available information.

At a glance

Generic nameANISINDIONE
SponsorMerck & Co.
Drug classanisindione
TargetVitamin K-dependent gamma-carboxylase, Arachidonate 5-lipoxygenase
ModalitySmall molecule
Therapeutic areaHematology
PhaseFDA-approved
First approval1957

Mechanism of action

Think of Vitamin K-dependent gamma-carboxylase like a key that helps blood clotting proteins work properly. Andion blocks this key, preventing blood clots from forming. This can be helpful in certain medical conditions, but it also means that people taking Andion may be at risk of bleeding more easily.

Approved indications

No approved indications tracked.

Common side effects

No common side effects on file.

Drug interactions

Primary sources

Every claim on this page is sourced from regulatory or scientific primary sources. See our editorial policy for full methodology.

SourceUsed for
FDA labelMechanism, indications, dosing, boxed warnings, drug interactions