Selenomethionine can neutralize reactive oxygen species by undergoing a chemical reaction that produces selenomethionine sulfoxide, and this process reduces ferroptosis without requiring the synthesis of new proteins.

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Evidence from Studies

Supporting (1)

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Community contributions welcome

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Selenomethionine as a dual-mechanism ferroptosis inhibitor: selenium-supply-driven GPX4 biosynthesis beyond transsulfuration and reductive-capacity-mediated ROS scavenging independent of GPX4 activity

Randomized Controlled Trial

Animal & In Vitro

2026 Feb 14

Selenomethionine helps protect cells from a type of cell death called ferroptosis by directly soaking up harmful oxygen molecules, even without making new proteins. This is like a chemical sponge that works on its own, not by helping the body build enzymes.

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Source Study

Selenomethionine as a dual-mechanism ferroptosis inhibitor: selenium-supply-driven GPX4 biosynthesis beyond transsulfuration and reductive-capacity-mediated ROS scavenging independent of GPX4 activity

Score: 13

DOI: 10.1038/s41419-026-08466-x

Similar Assertions

Selenomethionine decreases markers of oxidative damage and cell death in human cancer cells under conditions that trigger ferroptosis, such as exposure to RSL3 or lack of cystine.

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79%

Selenomethionine, a form of selenium, can still prevent cell damage and death in human cells even when the GPX4 protein is completely removed, suggesting it blocks a type of cell death called ferroptosis through a different pathway than previously thought.

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73%