Abstract
To the Editor: Several omissions in the letter by Roach and Carlin (Oct. 21 issue)1 should be noted.First of all, the claim that N,N-dimethylglycine (DMG) is "a normal body constituent" omits the fact that it is only transiently present, and in quantities too small to measure easily.2 , 3 Omitting this fact conveys the erroneous impression that the large "healthfood"-size doses (20 to 50 mg of synthetic DMG and hydrochloric acid three times daily) are safe.Secondly, the report of an alleged reduction in the frequency of seizures after ingestion of DMG (N-methylsarcosine) did not separate cause . . .

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