Methionine explained: what it is and where it comes from

The NIH says methionine is an essential amino acid supplied by food. Steel Bite Pro lists it within a 571 mg proprietary blend, rather than printing an amount for methionine alone. One product we reviewed lists methionine, and none prints a separate amount for it.

SOHONH₂SOHONH₂
What it is
Amino acid
In the products we reviewed
1, its label does not print the amount

What methionine is

  • Methionine comes from food.1
  • Methionine is an essential amino acid supplied by food.1

How much methionine each product gives

Per serving, as each label prints it

Amount not printed: the dashed line shows the most it can be, the whole blend

Steel Bite ProNot printed · at most 571 mg

The product we reviewed that lists methionine

ProductForm and servingMethionine per servingOur scorePrice a bottleBuy
Steel Bite Pro#6 in oral health supportCapsules2 capsulesNot printedIn a 571 mg proprietary blend8.3$49Check price
Prices checked Oct 11, 2026

Questions people ask

What is methionine?

Methionine is an essential amino acid supplied by food, according to the NIH.

Is methionine an essential amino acid?

Yes. The NIH identifies methionine as an essential amino acid supplied by food.

Where does methionine come from?

Methionine comes from food, according to the NIH.

Which supplements we reviewed contain methionine?

Steel Bite Pro is the only product we reviewed that lists methionine. It lists methionine inside a 571 mg proprietary blend, without printing a separate amount.

Sources

The products, amounts and prices come from each product's label and checkout, as its review shows them. AI drafts our pages from listed sources, figures are checked against them, and we have not tried the products.

  1. 1NIH National Cancer Institute Thesaurus, Methionineevsexplore.semantics.cancer.gov/evsexplorechecked